def update_sequence_info(record, seed_id, seqid_of_description,
aligned_sequence_of_seqid, num_aligned_columns,
sequence_of_seqid, sequence_header_of_seqid,
assume_seed_first, seed_sequence_header):
"""
record=biopython Bio.SeqRecord.SeqRecord.
record.description is string (e.g., O28424_ARCFU/3-199 1,197)
seqid_of_description - dictionary (reverse of seqs)
"""
# Find the SEQ number associated with the record
description = record.description
seqid = seqid_of_description[description]
# Find or create the aligned sequence record
aligned_seq = record.seq.tostring()
aligned_seguid = CheckSum.seguid(record.seq)
aligned_sequence_of_seqid[seqid] = _sequence(AlignedSequence, aligned_seq,
aligned_seguid)
# Compute the number of aligned columns, if not already known
if num_aligned_columns == 0:
num_aligned_columns = len(
aligned_seq.translate(trivial_translation, dotlowercase))
# Find or create the unaligned sequence record
unaligned_seq = aligned_seq.translate(uppercase_translation, dotdash)
unaligned_seguid = CheckSum.seguid(unaligned_seq)
sequence_of_seqid[seqid] = _sequence(Sequence, unaligned_seq,
unaligned_seguid)
# Find or create the sequence_header record
sequence_header_objects = \
SequenceHeader.objects.filter(header__exact = description,
sequence__exact = sequence_of_seqid[seqid])
if sequence_header_objects:
# Since the combination of header and sequence_id is constrained to be
# unique, there can only be one
sequence_header_of_seqid[seqid] = sequence_header_objects[0]
else:
# Create a new sequence_header record
sequence_header_of_seqid[seqid] =\
create_sequence_header(record.id,
description,
sequence_of_seqid[seqid])
if seed_sequence_header is None:
if assume_seed_first:
seed_sequence_header = sequence_header_of_seqid[seqid]
elif seed_id is not None and seed_id == record.id:
seed_sequence_header = sequence_header_of_seqid[seqid]
return seed_sequence_header
def main():
if len(sys.argv) < 2:
print "Usage: %s <uniprot_accession>" % sys.argv[0]
sys.exit(0)
uniprot_accession = sys.argv[1]
if not uniprot_accession_re1.match(uniprot_accession) and not \
uniprot_accession_re2.match(uniprot_accession):
print "The argument must be a valid UniProt accession"
sys.exit(1)
try:
response = urllib2.urlopen('http://www.uniprot.org/uniprot/%s.fasta' %
uniprot_accession)
except urllib2.HTTPError:
print "Unable to download sequence from UniProt"
sys.exit(1)
record = SeqIO.parse(response, 'fasta').next()
seguid = CheckSum.seguid(record.seq)
sequence_objects = Sequence.objects.filter(seguid__exact=seguid)
if sequence_objects:
tree_node_alignment_objects = TreeNodeAlignment.objects.filter(
sequence_header__sequence__in=sequence_objects)
if tree_node_alignment_objects:
families = set([
obj.tree_node.tree.family
for obj in tree_node_alignment_objects
])
for family in families:
print family.get_accession()
else:
print "There are no families containing this sequence."
else:
print "This sequence is not in the PhyloFacts 3 database"
def __init__(self, file, fastaRecord):
super(SequenceStat, self).__init__()
self.file = file
self.length = len(fastaRecord.seq)
self.description = fastaRecord.description
self.gc = SeqUtils.GC(fastaRecord.seq)
self.crc32 = CheckSum.crc32(fastaRecord.seq)
def __init__(self, file,fastaRecord): super(SequenceStat, self).__init__() self.file = file self.length = len(fastaRecord.seq) self.description=fastaRecord.description self.gc=SeqUtils.GC(fastaRecord.seq) self.crc32=CheckSum.crc32(fastaRecord.seq)
def parse_smo(work_path):
f = open(os.path.join(work_path, "satchmo.smo"))
alignment_offset_dict = {}
records = set()
current_header = ""
current_sequence = ""
alignmentOffset = 0
alignmentNumBytes = 0
withinAlignment = False
start_of_line = f.tell()
line = f.readline()
while line:
if line.rstrip() == 'alignment':
# skip past the line with the curly brace
f.readline()
# the next line is the start of the alignment
alignmentOffset = f.tell()
withinAlignment = True
elif line.rstrip() == '//':
if current_sequence != '':
seguid = CheckSum.seguid(current_sequence)
records.add(seguid)
alignmentNumBytes = start_of_line - alignmentOffset
for seguid in records:
if seguid not in alignment_offset_dict:
alignment_offset_dict[seguid] = {}
alignment_offset_dict[seguid][len(records)] \
= (alignmentOffset, alignmentNumBytes)
records = set()
current_header = ""
current_sequence = ""
withinAlignment = False
elif withinAlignment:
if len(line) > 0 and line[0] == '>':
if current_sequence != '':
seguid = CheckSum.seguid(current_sequence)
records.add(seguid)
current_header = line[1:].rstrip()
current_sequence = ""
else:
current_sequence = current_sequence + \
line.strip().translate(uppercase_translation, dotdash)
start_of_line = f.tell()
line = f.readline()
f.close()
return alignment_offset_dict
def main():
# This script takes UniProt Accession as input and finds the best GHG books
# that contains the Accession. Best book means having the most diverse taxa.
# Note: In PhyloFacts3 there are families without trees (normally because all
# the sequences in the family are identical, which makes the tree has no branch
# length), this script cannot find these families.
if len(sys.argv) < 2:
print "usage: %prog UniProt_accession outputfile "
sys.exit(1)
accession = sys.argv[1]
# find the UniProt index for the accession
uniprot_dat_indices = UniProtDatIndex.objects.filter(uniprot_accession = accession)
if uniprot_dat_indices:
uniprot_object = uniprot_dat_indices[0].uniprot
TreeNodeAlignments=TreeNodeAlignment.objects.filter(sequence_header__uniprot=uniprot_object,tree_node__tree__family__active=True,tree_node__tree__family__family_type='G').exclude(tree_node__tree__family__status__exact ='bad')
if not len(TreeNodeAlignments)==0:
families=set([tree_node_alignment.tree_node.tree.family \
for tree_node_alignment in TreeNodeAlignments])
(max_family_id, max_taxa_num)=get_all_taxon_ids(families)
print ("%s,%s,%s" %(accession,max_family_id,max_taxa_num))
else:
print ("%s is not covered in the database\n" % accession)
else:
# find the seguid from UniProt
print ("%s is not in uniprot_dat_index, try the seguid\n" % accession)
uniprot_accession = accession
if uniprot_accession_re1.match(uniprot_accession) or \
uniprot_accession_re2.match(uniprot_accession):
try:
response = urllib2.urlopen('http://www.uniprot.org/uniprot/%s.fasta'
% uniprot_accession)
except urllib2.HTTPError:
print ("Unable to download sequence from UniProt\n")
record = SeqIO.parse(response, 'fasta').next()
seguid = CheckSum.seguid(record.seq)
sequence_objects = Sequence.objects.filter(seguid__exact = seguid)
if sequence_objects:
TreeNodeAlignments=TreeNodeAlignment.objects.filter \
(sequence_header__sequence__in = sequence_objects, \
tree_node__tree__family__active=True, \
tree_node__tree__family__family_type='G') \
.exclude(tree_node__tree__family__status__exact='bad')
if not len(TreeNodeAlignments)==0:
families=set([tree_node_alignment.tree_node.tree.family \
for tree_node_alignment in TreeNodeAlignments])
(max_family_id,max_taxa_num)=get_all_taxon_ids(families)
print ("%s,%s,%s" % (accession,max_family_id,max_taxa_num))
else:
print ("There are no families containing %s.\n" % accession)
else:
print ("%s is not in the PhyloFacts 3 database.\n" % accession)
else:
print ("The argument must be a valid UniProt accession\n")
def insertPDBPredictionsIntoDB(hmm, tree_node, basename):
hmmsearch_filename = basename + "_vs_PDB.hmmsearch.out"
hmmsearch_results = parse_results_of_hmmsearch_or_hmmscan.parse(
hmmsearch_filename, 0.001, 1, 1)
# There should only be one query here - the family HMM
for query in hmmsearch_results.hit_result_of_name_of_query:
for pdb_chain_id in hmmsearch_results.hit_result_of_name_of_query[
query]:
pdb_id, chain_id = pdb_chain_id.split('_')
pdb_chain_objects = PDB_Chain.objects.filter(
pdb__id__exact=pdb_id, chain_id__exact=chain_id)
if pdb_chain_objects:
pdb_chain = pdb_chain_objects[0]
else:
print "Unrecognized PDB chain %s in hmmsearch results." \
% pdb_chain_id,
print "The PDB_Chain table may be out of date."
continue
hit_result \
= hmmsearch_results.hit_result_of_name_of_query[query][pdb_chain_id]
for match_number in hit_result.matches:
match_result = hit_result.matches[match_number]
aligned_seguid = CheckSum.seguid(match_result.aligned_hit)
aligned_sequence_objects = AlignedSequence.objects.filter(
seguid__exact=aligned_seguid)
if aligned_sequence_objects:
aligned_sequence = aligned_sequence_objects[0]
else:
# Because multiple versions of this fun run simultaneously, it is
# possible this was just created moments ago. So, get_or_create
# just in case.
aligned_sequence, is_created \
= AlignedSequence.objects.get_or_create(
chars = match_result.aligned_hit,
seguid = aligned_seguid)
sequence_hmm = SequenceHMM.objects.create(
hmm=hmm,
sequence=pdb_chain.full_sequence,
aligned_sequence=aligned_sequence,
bit_score=match_result.bit_score,
e_value=match_result.i_evalue,
sequence_type='query',
hmm_start=match_result.hmm_from,
hmm_end=match_result.hmm_to,
sequence_start=match_result.seq_from,
sequence_end=match_result.seq_to,
match_type=match_result.match_type,
n_aligned_chars=match_result.num_aligned_chars)
TreeNodePDB.objects.create(sequence_hmm=sequence_hmm,
tree_node=tree_node,
pdb_chain=pdb_chain)
def get_nr_sequences(fasta_file, genomes_list):
locus2genome = {}
for fasta in genomes_list:
genome = os.path.basename(fasta).split('.')[0]
for seq in SeqIO.parse(fasta, "fasta"):
locus2genome[seq.name] = genome
nr_fasta = open('nr.faa', 'w')
nr_mapping = open('nr_mapping.tab', 'w')
hsh_checksum_list = {}
records = SeqIO.parse(fasta_file, "fasta")
updated_records = []
for record in records:
# NOTE: the case is important for crc64, need to check whether it
# is necessary to make all entries lower/upper case to ensure consistency.
checksum = CheckSum.crc64(record.seq)
nr_mapping.write("%s\t%s\t%s\n" % (record.id,
checksum,
locus2genome[record.id]))
if checksum not in hsh_checksum_list:
hsh_checksum_list[checksum] = [record]
record.id = checksum
record.name = ""
updated_records.append(record)
else:
# NOTE: having same hash does not mean that the sequences are identical: as
# the hash space is smaller than the sequence space, it means that collision
# are unavoidable (but not probable) and record with same hashes should be compared
# https://www.uniprot.org/help/uniparc (sequence comparison)
#
# the list of records having the same checksum, but potentially,
# different sequences -> compare them: python does so
# comparing the sequences as strings, assuming a similar alphabet
lst_records = hsh_checksum_list[checksum]
sequence = record.seq
has_identical = False
for prev_record in lst_records:
if prev_record.seq == sequence:
has_identical = True
break
if not has_identical:
lst_records.append(record)
record.id = checksum + "-" + len(lst_records)
record.name = ""
updated_records.append(record)
SeqIO.write(updated_records, nr_fasta, "fasta")
def parse_tree(work_path):
seguids = {}
f = open(os.path.join(work_path, "input_unaligned.fasta"))
for record in SeqIO.parse(f, "fasta"):
id = record.id.replace(':', '_')
seguids[id] = CheckSum.seguid(record.seq)
f.close()
f = open(os.path.join(work_path, "satchmo_tree.newick"))
tree_string = f.read()
f.close()
tree_string = tree_string.translate(trivial_translation, string.whitespace)
root = node()
root.readFromTreeString(tree_string, seguids, 0)
root.updateLeftId(1)
return root
def main():
if len(sys.argv) < 3:
print "Usage: %s <seedX_id> <seedY_id>" % sys.argv[0]
sys.exit(0)
seedX_id = sys.argv[1]
seedY_id = sys.argv[2]
all_alignment_filenames = \
matchmaker_seed_alignment_filenames(seedX_id, seedY_id)
output_handle = open(alignment_nr_csv_file(seedX_id, seedY_id), "w")
output_handle.write("Alignment\n")
nr_alignments = {}
dups_of_alignment = {}
for alignment_filename in all_alignment_filenames:
"""
#7/15: replaced below with functions that can read compressed alignment files
f = open(alignment_filename)
lines = f.readlines()
if len(lines) < 4:
continue
ali = '*'.join([lines[1],lines[3]])
"""
(seed1, seq1), (seed2, seq2) = read_alignment_file(alignment_filename)
ali = '*'.join([seq1, seq2])
the_seguid = CheckSum.seguid(ali)
if the_seguid in nr_alignments and nr_alignments[the_seguid] != None:
if ali in nr_alignments[the_seguid] \
and nr_alignments[the_seguid][ali] != None:
nr_alignments[the_seguid][ali].add(alignment_filename)
dups_of_alignment[alignment_filename] = nr_alignments[
the_seguid][ali]
else:
nr_alignments[the_seguid][ali] = set([alignment_filename])
output_handle.write("%s\n" % alignment_filename)
dups_of_alignment[alignment_filename] = nr_alignments[
the_seguid][ali]
else:
nr_alignments[the_seguid] = {ali: set([alignment_filename])}
output_handle.write("%s\n" % alignment_filename)
dups_of_alignment[alignment_filename] = nr_alignments[the_seguid][
ali]
pklfp = open(
os.path.join(align_dir(seedX_id, seedY_id),
"%s_%s_alignment_dict.pkl" % (seedX_id, seedY_id)), "w")
cPickle.dump((dups_of_alignment, nr_alignments), pklfp)
pklfp.close()
def main():
parser = OptionParser(usage='%prog')
(options, args) = parser.parse_args()
f = open("/clusterfs/ohana/external/pdb_rcsb_full", "rU")
for record in SeqIO.parse(f, "fasta"):
fields = record.description.split()
if len(fields) < 2 or fields[1] != 'mol:protein':
continue
pdb_id, chain_id = fields[0].split('_')
pdb_objects = PDB.objects.filter(id__exact=pdb_id)
if pdb_objects:
pdb = pdb_objects[0]
else:
pdb = PDB.objects.create(id=pdb_id)
seguid = CheckSum.seguid(record.seq)
sequence_objects = Sequence.objects.filter(seguid__exact=seguid)
if sequence_objects:
sequence = sequence_objects[0]
else:
sequence = Sequence.objects.create(chars=record.seq.tostring(),
seguid=seguid)
pdb_chain_objects = PDB_Chain.objects.filter(pdb__exact=pdb,
chain_id__exact=chain_id)
if pdb_chain_objects:
pdb_chain = pdb_chain_objects[0]
# Update the sequence in case it has changed
if pdb_chain.full_sequence != sequence:
pdb_chain.full_sequence = sequence
pdb_chain.all_residues_have_atom_records_f = None
if len(fields) >= 4:
pdb_chain.description = ' '.join(fields[3:])
pdb_chain.save()
else:
if len(fields) >= 4:
description = ' '.join(fields[3:])
pdb_chain = PDB_Chain.objects.create(pdb=pdb,
chain_id=chain_id,
full_sequence=sequence,
description=description)
else:
pdb_chain = PDB_Chain.objects.create(pdb=pdb,
chain_id=chain_id,
full_sequence=sequence)
def get_seguids_of_ids(work_path):
seguids = {}
ids_of_seguid = {}
f = open(os.path.join(work_path, "input_unaligned.fasta"))
for record in SeqIO.parse(f, "fasta"):
id = record.id.replace(':', '_')
additional_id = id.translate(special_tree_char_translation, '')
seguid = CheckSum.seguid(record.seq)
seguids[id] = seguid
seguids[additional_id] = seguid
# Don't put the additional_id in ids_of_seguid, as views.py expects there
# to be one id per leaf.
if seguid not in ids_of_seguid:
ids_of_seguid[seguid] = set()
ids_of_seguid[seguid].add(id)
f.close()
for seguid in ids_of_seguid:
id_list = list(ids_of_seguid[seguid])
id_list.sort()
ids_of_seguid[seguid] = id_list
f = open(os.path.join(work_path, "ids_of_seguid.pkl"), "w")
cPickle.dump(ids_of_seguid, f)
f.close()
return (seguids, ids_of_seguid)
def results(request, work_path, response_dict):
pickle_path = os.path.join(work_path,
'alignment_offset_of_left_id.pkl')
if os.path.exists(pickle_path):
f = open(pickle_path)
alignment_offset_of_left_id = cPickle.load(f)
f.close()
else:
alignment_offset_of_left_id = find_alignment_offset_of_left_id(work_path)
pickle_path = os.path.join(work_path,
'ids_of_seguid.pkl')
if os.path.exists(pickle_path):
f = open(pickle_path)
ids_of_seguid = cPickle.load(f)
f.close()
else:
seguids, ids_of_seguid = get_seguids_of_ids(work_path)
left_id = 1
if 'left_id' in request.GET:
try:
left_id = int(request.GET['left_id'].strip())
if left_id < 1:
left_id = 1
except ValueError:
left_id = 1
alignments = []
if left_id != 1:
if left_id in alignment_offset_of_left_id:
offset, num_bytes = alignment_offset_of_left_id[left_id]
f = open(os.path.join(work_path, "satchmo.smo"))
f.seek(offset)
fake_f = StringIO.StringIO(f.read(num_bytes))
f.close()
alignments = list(AlignIO.parse(fake_f, "fasta"))
fake_f.close()
else:
left_id = 1
else:
f = open(os.path.join(work_path, 'satchmo_alignment.fasta'))
alignments = list(AlignIO.parse(f, "fasta"))
f.close()
alignment_blocks = []
if len(alignments) > 0:
alignment = alignments[0]
alignment_length = 0
aligned_column_indices = set()
alignment_seqs = {}
first_pass = True
i = 0
k = 0
prev_seguid = ''
uppercase_translation = string.maketrans(string.lowercase,
string.uppercase)
dotdash = '.-'
print
for row in alignment:
seq = row.seq.tostring()
if first_pass:
alignment_length = len(row.seq)
for j in range(len(seq)):
if seq[j] == '-' or seq[j].isupper():
aligned_column_indices.add(j)
first_pass = False
alignment_seqs[i] = seq
unaligned_seq = seq.translate(uppercase_translation, dotdash)
seguid = CheckSum.seguid(unaligned_seq)
if seguid in ids_of_seguid and len(ids_of_seguid[seguid]) >= 1:
if seguid == prev_seguid:
if k < len(ids_of_seguid[seguid]) - 1:
k += 1
else:
k = 0
row.id = ids_of_seguid[seguid][k]
prev_seguid = seguid
i += 1
column_conserved_residue = {}
column_score = {}
class_of_column = {}
for j in aligned_column_indices:
freq_of_residue = {}
highest_frequency = 0
most_frequent_residue = ''
for i in alignment_seqs.keys():
residue = alignment_seqs[i][j]
if residue == '-':
continue
if residue not in freq_of_residue:
freq_of_residue[residue] = 0
freq_of_residue[residue] += 1
if freq_of_residue[residue] > highest_frequency:
highest_frequency = freq_of_residue[residue]
most_frequent_residue = residue
column_conserved_residue[j] = most_frequent_residue
num_pairs = 0
sum_of_scores = 0.0
for i0 in range(len(alignment_seqs)):
residue0 = alignment_seqs[i0][j]
if residue0 != '-':
for i1 in range(i0):
residue1 = alignment_seqs[i1][j]
if residue1 != '-':
score = blosum62_of_residues(alignment_seqs[i0][j],
alignment_seqs[i1][j])
sum_of_scores += score
num_pairs += 1
if num_pairs > 0:
column_score[j] = sum_of_scores / num_pairs
if column_score[j] >= 3:
class_of_column[j] = 'align_high'
elif column_score[j] >= 1.5:
class_of_column[j] = 'align_moderate'
elif column_score[j] >= 0.5:
class_of_column[j] = 'align_low'
num_blocks = alignment_length / wrapwidth
useless_re = re.compile('^[\.-]*$')
if alignment_length % wrapwidth > 0:
num_blocks += 1
back_count = [0 for i in range(len(alignment))]
for i in range(num_blocks):
block = []
for row_no,row in enumerate(alignment):
seq = row.seq.tostring()
seq_piece = seq[(i * wrapwidth):((i + 1) * wrapwidth)]
if useless_re.match(seq_piece):
continue
alignment_row = {}
alignment_row['id'] = row.id
alignment_row['seq'] = []
alignment_row['start'] = back_count[row_no]
alignment_row['stop'] = back_count[row_no] \
+ len(seq_piece.replace('.','').replace('-',''))
back_count[row_no] = alignment_row['stop']
for j in xrange(i*wrapwidth,(i+1)*wrapwidth):
if j < len(seq):
residue = seq[j]
spec = {}
spec['residue'] = residue
spec['class'] = ''
if j in aligned_column_indices and residue != '-' and \
j in class_of_column:
if blosum62_of_residues(residue, column_conserved_residue[j]) \
>= column_score[j]:
spec['class'] = class_of_column[j]
alignment_row['seq'] = alignment_row['seq'] + [spec]
else:
alignment_row['seq'].append(dict(
(('residue',' '), ('class', None))
))
block = block + [alignment_row]
alignment_blocks = alignment_blocks + [block]
return render_to_response('satchmo/results.html', dict(response_dict,
relative_path=os.path.basename(work_path).replace('satchmo', '', 1),
js=js,
alignment_blocks=alignment_blocks,
left_id=left_id,
left_ids_with_alignments = alignment_offset_of_left_id.keys(),
))
def get_seguid(self, sequence):
sequence_handle = StringIO.StringIO(sequence)
record = SeqIO.parse(sequence_handle, 'fasta').next()
sequence_handle.close()
seguid = CheckSum.seguid(record.seq)
return seguid
def main():
if len(sys.argv) < 2:
usage()
sys.exit(0)
family_accession = sys.argv[1]
try:
family_id = int(family_accession[3:])
except ValueError:
usage()
sys.exit(1)
try:
family = Family.objects.get(id=family_id)
if family.status == "bad":
raise Family.DoesNotExist
except Family.DoesNotExist:
print "No family found with accession %s" % family_accession
sys.exit(1)
family_dir = get_dir_of_family_accession(family_accession)
seed_path = os.path.join(family_dir, "seed.fa")
if not os.path.exists(seed_path):
if os.path.realpath(family_dir).find('TreeFam') >= 0:
os.chdir(family_dir)
possible_seed_files = glob.glob("*_HUMAN*.fa")
candidates = set()
swissprot_desc_re = re.compile('^%s$' % swissprot_desc_pat)
for file in possible_seed_files:
basename = os.path.splitext(file)[0]
components = basename.split('_')
if len(components) < 2 or components[1] != 'HUMAN':
continue
if swissprot_desc_re.match(components[0]) is None and \
uniprot_accession_re1.match(components[0]) is None and \
uniprot_accession_re2.match(components[0]) is None:
continue
if len(components) > 2:
if len(components) != 4:
continue
try:
start = int(components[2])
except ValueError:
continue
try:
end = int(components[3])
except ValueError:
continue
candidates.add(file)
if len(candidates) != 1:
print "Seed file for family %s missing" % family_accession
sys.exit(1)
seed_path = os.path.join(family_dir, list(candidates)[0])
else:
print "Seed file for family %s missing" % family_accession
sys.exit(1)
f = open(seed_path)
seed_record = SeqIO.parse(f, "fasta").next()
f.close()
seed_seguid = CheckSum.seguid(seed_record.seq)
seed_id = seed_record.id.strip('lcl|')
print "%s: FlowerPower seed id %s" % (family_accession, seed_id)
seed_accession = None
recognizing_regexp = None
# uniprot_accession_re1 recognizes a UniProt accession only if it is the
# whole string, not if it is a substring
for regexp in [
re.compile(uniprot_accession_pat1),
re.compile(uniprot_accession_pat2), gi_re
]:
m = regexp.search(seed_id)
if m:
seed_accession = m.group()
recognizing_regexp = regexp
break
if seed_accession is None:
print "Could not parse accession from seed id"
sys.exit(1)
sequences = Sequence.objects.filter(seguid=seed_seguid)
sequence_headers = SequenceHeader.objects.filter(sequence__in=sequences)
possible_sequence_headers = set()
for sequence_header in sequence_headers:
m = recognizing_regexp.search(sequence_header.header)
if m:
accession = m.group()
if accession == seed_accession:
if len(sequence_header.header) >= 4 and \
sequence_header.header[0:4] == 'lcl|':
possible_sequence_headers = set([sequence_header])
break
if sequence_header.header.find('|') < 0:
possible_sequence_headers = set([sequence_header])
break
possible_sequence_headers.add(sequence_header)
if len(possible_sequence_headers) > 1:
alns = TreeNodeAlignment.objects.filter(
tree_node=family.canonical_root_node(),
sequence_header__in=possible_sequence_headers)
possible_sequence_headers = set([aln.sequence_header for aln in alns])
print "%s: Found %d possible sequence headers" % (
family_accession, len(possible_sequence_headers))
for seqhdr in possible_sequence_headers:
print "%s: possible sequence header %s" % (family_accession,
seqhdr.header)
if len(possible_sequence_headers) == 1:
seed_sequence_header = list(possible_sequence_headers)[0]
print "Assigning seed sequence header id %d to family %s" \
% (seed_sequence_header.id, family_accession)
family.seed_sequence_header = seed_sequence_header
family.save()
go = Ontology(snakemake.input["go_obo"])
go_annotations = open(snakemake.output["go_annotations"], 'w')
uniparcdb = snakemake.input["uniparcdb"]
conn = sqlite3.connect(goa_path)
cursor = conn.cursor()
sqlatt = f'attach database "{uniparcdb}" as uniparc;'
cursor.execute(sqlatt,)
# 1. retrieve uniprot accession from exact match (hash)
# 2. retrieve GO annotations
for record in SeqIO.parse(faa_path, "fasta"):
checksum = CheckSum.seguid(record.seq)
sqlq = 'select * from uniparc.uniparc_accession where sequence_hash="%s"' % checksum
uniparc_id = cursor.execute(sqlq,).fetchall()[0][0]
print("uid", uniparc_id)
sqlq2 = 'select distinct accession from uniparc_cross_references t1 ' \
' inner join crossref_databases t2 on t1.db_id=t2.db_id ' \
' where t1.uniparc_id=%s and db_name in ("UniProtKB/Swiss-Prot", "UniProtKB/TrEMBL");' % uniparc_id
print(sqlq2)
uniprotkb_acc_list = [i[0].split(".")[0] for i in cursor.execute(sqlq2,).fetchall()]
print("hits:", uniprotkb_acc_list)
def main():
parser = OptionParser(usage='%prog [StartPos_EndPos]')
parser.add_option(
'--update_features',
action='store_true',
dest='update_features',
default=True,
help="Insert new entries into uniprot_feature and delete old ones.")
parser.add_option(
'--no_update_features',
action='store_false',
dest='update_features',
default=True,
help="Only insert entries into uniprot_feature for new uniprot records."
)
(options, args) = parser.parse_args()
sharding = False
if len(args) >= 1:
sharding = True
shard_spec = args[0]
positions = shard_spec.split('_')
if positions < 2:
parser.error(
"Must specify shard as starting and ending file positions " \
+ "separated by an underscore")
try:
start_pos = int(positions[0])
except ValueError:
parser.error(
"Must specify shard as starting and ending file positions " \
+ "separated by an underscore")
try:
end_pos = int(positions[1])
except ValueError:
parser.error(
"Must specify shard as starting and ending file positions " \
+ "separated by an underscore")
num_records = 0
description_re = re.compile(
'(RecName: |AltName: |SubName: ' +
'|Full=|Short=|EC=|Allergen=|Biotech=|CD_antigen=|INN=|;)' +
'|Includes: |Contains: |Flags: ')
# Prepare regular expressions and object maps for parsing feature tables
ptm_types = PostTranslationalModificationType.objects.all()
ptm_re = re.compile(
'(%s)' % '|'.join([ptm_type.modification for ptm_type in ptm_types]))
ptm_type_object_of_modification = {}
for ptm_type in ptm_types:
ptm_type_object_of_modification[ptm_type.modification] = ptm_type
# Example:
# RP PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-267
# Here PHOSPHORYLATION is a post-translational modification type, which
# occurs at position 267. Later there is a corresponding line in the
# feature table:
# FT MOD_RES 267 267 Phosphoserine.
ptm_pos_re = re.compile(' AT [A-Z][A-Z][A-Z]-([0-9]*)')
feature_keys = FeatureKey.objects.all()
feature_key_object_of_key_name = {}
for feature_key in feature_keys:
feature_key_object_of_key_name[feature_key.key_name] = feature_key
nonexperimental_qualifiers = NonExperimentalQualifier.objects.all()
nonexperimental_re = re.compile('(%s)' % '|'.join(
[qualifier.description for qualifier in nonexperimental_qualifiers]))
nonexperimental_qualifier_object_of_description = {}
for qualifier in nonexperimental_qualifiers:
nonexperimental_qualifier_object_of_description[qualifier.description] \
= qualifier
dbSNPrs_re = re.compile('dbSNP:rs([0-9]*)')
large_scale_re = re.compile('LARGE SCALE')
go_evidence_objects = GO_EvidencePriority.objects.all()
go_evidence_object_of_go_evidence_code = {}
for go_evidence_object in go_evidence_objects:
go_evidence_object_of_go_evidence_code[go_evidence_object.evidence]\
= go_evidence_object
f = open("/clusterfs/ohana/external/UniProt/to_import/uniprot.dat")
pos_f = open("/clusterfs/ohana/external/UniProt/to_import/uniprot.dat")
if sharding:
f.seek(start_pos)
current_pos = f.tell()
pos_f.seek(current_pos)
for record in SwissProt.parse(f):
try:
taxon = UniProtTaxonomy.objects.get(
id__exact=record.taxonomy_id[0])
except UniProtTaxonomy.DoesNotExist:
taxon = handle_missing_taxonomy(record)
seguid = CheckSum.seguid(record.sequence)
# Parse the description
description_tokens = description_re.split(record.description)
full_recommended_name = ''
# Look for the first recommended name category
# (before any Includes or Contains sections)
for i in xrange(len(description_tokens)):
if description_tokens[i] == 'RecName: ':
break
# Now look for the full name
for j in xrange(i, len(description_tokens)):
if description_tokens[j] == 'Full=':
break
# The full recommended name is the next token
if j < len(description_tokens) - 1:
full_recommended_name = description_tokens[j + 1]
else:
# Try looking for SubName instead, maybe this is a fragment
# Look for the first subname category
# (before any Includes or Contains sections)
for i in xrange(len(description_tokens)):
if description_tokens[i] == 'SubName: ':
break
# Now look for the full name
for j in xrange(i, len(description_tokens)):
if description_tokens[j] == 'Full=':
break
# The full subname is the next token
if j < len(description_tokens) - 1:
full_recommended_name = description_tokens[j + 1]
else:
print "Full recommended name not found for %s" % record.entry_name
print record.description
# Look for all the EC numbers
ecs = set()
for i in xrange(len(description_tokens)):
if description_tokens[i] == 'EC=':
ecs.add(description_tokens[i + 1])
# Look for precursor or fragment flags
is_fragment = False
is_precursor = False
for i in xrange(len(description_tokens)):
if description_tokens[i] == 'Flag: ':
if description_tokens[i + 1][0:8] == 'Fragment':
is_fragment = True
elif description_tokens[i + 1] == 'Precursor':
is_precursor = True
# Every UniProt accession is present in the uniprot_dat_index table.
# Each of them points to a record in the uniprot table.
# On the other hand, a record in the uniprot table has only one
# accession, the one that was the primary accession the last time we did
# this update.
# The primary accession may have changed since we last updated (it may now
# be a secondary accession).
# The identifier may also have changed. E.g., if the record was previously
# in TrEMBL and is now in SwissProt, then its identifier may have changed
# from one like Q197F8_IIV3 to one like 002R_IIV3 (i.e., the first part is
# no longer the accession, but a gene name or something more informative).
# So, we can't necessarily tell which was the existing record in the uniprot
# table corresponding to the record we are now parsing by looking at either
# its identifier or its accession.
# Instead, we find the entries in the uniprot_dat_index table for each of
# the accessions.
# If one corresponding to the primary accession is already present, we take
# the corresponding record in the UniProt table to be the canonical entry
# corresponding to this UniProt record.
# If none corresponding to the primary accession is present but entries in
# the uniprot_dat_index for other accessions are present, we pick one of
# these and make the corresponding record in the uniprot table the canonical
# entry.
# If no entries in the uniprot_dat_index table corresponding to any of these
# accessions are present, we create a new record in the uniprot table and
# make it the canonical entry.
# If the entries in the uniprot_dat_index table corresponding to these
# accessions point to multiple different records in the uniprot table, we
# will delete the other ones at the end of this loop iteration. But first
# we will update the sequence_header records that point to those entries to
# point instead to the canonical entry.
new_uniprot = False
uniprot_ids_to_delete = set()
uniprot_dat_index_of_accession = {}
uniprot_dat_indices = UniProtDatIndex.objects.filter(
uniprot_accession__in=record.accessions)
uniprot_of_uniprot_id = {}
for uniprot_dat_index in uniprot_dat_indices:
uniprot_dat_index_of_accession[uniprot_dat_index.uniprot_accession] \
= uniprot_dat_index
uniprot_of_uniprot_id[uniprot_dat_index.uniprot.id] \
= uniprot_dat_index.uniprot
if len(uniprot_dat_index_of_accession.keys()) > 0:
if record.accessions[0] in uniprot_dat_index_of_accession:
uniprot = uniprot_dat_index_of_accession[
record.accessions[0]].uniprot
else:
an_accession = uniprot_dat_index_of_accession.keys()[0]
uniprot = uniprot_dat_index_of_accession[an_accession].uniprot
for accession in uniprot_dat_index_of_accession:
uniprot_dat_index_of_accession[accession].uniprot = uniprot
uniprot_dat_index_of_accession[
accession].file_char = current_pos
uniprot_dat_index_of_accession[accession].save()
missing_accessions \
= set(record.accessions) - set(uniprot_dat_index_of_accession.keys())
for accession in missing_accessions:
uniprot_dat_index_of_accession[accession] \
= UniProtDatIndex.objects.create(file_char = current_pos,
uniprot_accession = accession,
uniprot = uniprot)
uniprot_ids_to_delete = set(uniprot_of_uniprot_id.keys())
uniprot_ids_to_delete.remove(uniprot.id)
# Find sequence_headers pointing to the obsolete uniprot records, and
# point them at the canonical one instead
sequence_headers = SequenceHeader.objects.filter(
uniprot__id__in=uniprot_ids_to_delete)
for sequence_header in sequence_headers:
sequence_header.uniprot = uniprot
sequence_header.save()
else:
new_uniprot = True
uniprot = UniProt.objects.create(
uniprot_identifier=record.entry_name,
accession=record.accessions[0],
taxon=taxon,
de=full_recommended_name,
seguid=seguid,
in_swissprot_f=(record.data_class == 'Reviewed'))
for accession in record.accessions:
uniprot_dat_index_of_accession[accession] \
= UniProtDatIndex.objects.create(file_char = current_pos,
uniprot_accession = accession,
uniprot = uniprot)
# Look for orphaned sequence headers that can be assigned to this
# uniprot
sequences = Sequence.objects.filter(seguid__exact=seguid)
sequence_ids = [sequence.id for sequence in sequences]
if sequences:
sequence_headers = SequenceHeader.objects.filter(
sequence__id__in=sequence_ids,
uniprot__isnull=True,
taxon__id__exact=taxon.id)
for sequence_header in sequence_headers:
sequence_header.uniprot = uniprot
uniprot.uniprot_identifier = record.entry_name
uniprot.accession = record.accessions[0]
uniprot.uniprot_taxon = taxon
uniprot.de = full_recommended_name
uniprot.seguid = seguid
uniprot.in_swissprot_f = (record.data_class == 'Reviewed')
uniprot.description = record.description
if is_fragment:
uniprot.is_fragment = True
if is_precursor:
uniprot.is_precursor = True
uniprot.save()
# Update the EC associations
uniprot_ec_objects = UniProtEC.objects.filter(uniprot__exact=uniprot)
uniprot_ec_object_of_ec_id = {}
for uniprot_ec_object in uniprot_ec_objects:
uniprot_ec_object_of_ec_id[
uniprot_ec_object.ec.id] = uniprot_ec_object
db_ec_ids = set(uniprot_ec_object_of_ec_id.keys())
ec_object_of_ec_id = {}
for ec in ecs:
class_number_str, subclass_number_str, subsubclass_number_str, \
enzyme_number_str = ec.split('.')
is_preliminary = False
# If EC number is similar to '-.-.-.-', then we should report
# an error and continue. This is obviously dirty data and should
# be reported to UniProt
try:
class_number = int(class_number_str)
except ValueError:
print "Warning: %s has invalid EC Number: '%s'" % (
uniprot.uniprot_identifier, ec)
continue
if subclass_number_str == '-':
ec_objects = EC.objects.filter(
class_number__exact=class_number,
subclass_number__isnull=True,
subsubclass_number__isnull=True,
enzyme_number__isnull=True)
else:
subclass_number = int(subclass_number_str)
if subsubclass_number_str == '-':
ec_objects = EC.objects.filter(
class_number__exact=class_number,
subclass_number__exact=subclass_number,
subsubclass_number__isnull=True,
enzyme_number__isnull=True)
else:
subsubclass_number = int(subsubclass_number_str)
enzyme_number_str = enzyme_number_str.strip().rstrip(';')
if enzyme_number_str == '-':
ec_objects = EC.objects.filter(
class_number__exact=class_number,
subclass_number__exact=subclass_number,
subsubclass_number__exact=subsubclass_number,
enzyme_number__isnull=True)
else:
try:
enzyme_number = int(enzyme_number_str)
except ValueError:
print "Preliminary EC %s in %s" % (
ec, record.entry_name)
print record.description
is_preliminary = True
enzyme_number = int(enzyme_number_str[1:])
ec_objects = EC.objects.filter(
class_number__exact=class_number,
subclass_number__exact=subclass_number,
subsubclass_number__exact=subsubclass_number,
enzyme_number__exact=enzyme_number,
is_preliminary_f=is_preliminary)
if ec_objects:
ec_object = ec_objects[0]
else:
ec_object = EC.objects.create(
class_number=class_number,
subclass_number=subclass_number,
subsubclass_number=subsubclass_number,
enzyme_number=enzyme_number,
is_preliminary_f=is_preliminary)
ec_object_of_ec_id[ec_object.id] = ec_object
uniprot_dat_ec_ids = set(ec_object_of_ec_id.keys())
for ec_id in db_ec_ids - uniprot_dat_ec_ids:
uniprot_ec_object_of_ec_id[ec_id].delete()
for ec_id in uniprot_dat_ec_ids - db_ec_ids:
UniProtEC.objects.create(uniprot=uniprot,
ec=ec_object_of_ec_id[ec_id])
# Update the keyword associations
uniprot_keyword_objects = UniProtKeyword.objects.filter(
uniprot__exact=uniprot)
uniprot_keyword_object_of_keyword_accession = {}
for uniprot_keyword_object in uniprot_keyword_objects:
uniprot_keyword_object_of_keyword_accession[ \
uniprot_keyword_object.keyword.accession] = uniprot_keyword_object
db_keyword_accessions \
= set(uniprot_keyword_object_of_keyword_accession.keys())
keyword_object_of_keyword_accession = {}
for keyword in record.keywords:
keyword_objects = Keyword.objects.filter(identifier__exact=keyword)
if keyword_objects:
keyword_object = keyword_objects[0]
keyword_object_of_keyword_accession[keyword_object.accession] \
= keyword_object
else:
print "Unrecognized keyword %s while parsing %s." % (
keyword, record.entry_name),
print "The keyword table may be out of date."
uniprot_dat_keyword_accessions \
= set(keyword_object_of_keyword_accession.keys())
for accession in db_keyword_accessions - uniprot_dat_keyword_accessions:
uniprot_keyword_object_of_keyword_accession[accession].delete()
for accession in uniprot_dat_keyword_accessions - db_keyword_accessions:
UniProtKeyword.objects.create(
uniprot=uniprot,
keyword=keyword_object_of_keyword_accession[accession])
# Update the organelle associations
uniprot_organelle_objects = UniProtOrganelle.objects.filter(
uniprot__exact=uniprot)
uniprot_organelle_object_of_organelle_id = {}
for uniprot_organelle_object in uniprot_organelle_objects:
uniprot_organelle_object_of_organelle_id[ \
uniprot_organelle_object.organelle.id] = uniprot_organelle_object
db_organelle_ids = set(uniprot_organelle_object_of_organelle_id.keys())
organelle_object_of_organelle_id = {}
for organelle in record.organelle.rstrip('.').split(','):
if len(organelle) == 0:
continue
fields = organelle.split('; ')
if len(fields) > 1:
# This had better be a plastid
if fields[0] == 'Plastid':
organelle_objects = Organelle.objects.filter(
description__exact=fields[0],
plastid_type__exact=fields[1])
else:
print "Unrecognized organelle %s in %s" % (
organelle, record.entry_name)
else:
organelle_objects = Organelle.objects.filter(
description__exact=fields[0])
if organelle_objects:
organelle_object = organelle_objects[0]
else:
field = fields[0].strip()
# This had better be a plasmid
if len(field) >= 9 and field[0:7] == 'Plasmid':
organelle_object = Organelle.objects.create(
description=field, plasmid_name=field[8:])
elif len(field) >= 13 and field[4:11] == 'Plasmid':
organelle_object = Organelle.objects.create(
description=field[4:], plasmid_name=field[12:])
else:
print "Unrecognized organelle %s in %s" % (
organelle, record.entry_name)
continue
organelle_object_of_organelle_id[
organelle_object.id] = organelle_object
uniprot_dat_organelle_ids = set(
organelle_object_of_organelle_id.keys())
for organelle_id in db_organelle_ids - uniprot_dat_organelle_ids:
uniprot_organelle_object_of_organelle_id[organelle_id].delete()
for organelle_id in uniprot_dat_organelle_ids - db_organelle_ids:
UniProtOrganelle.objects.create(
uniprot=uniprot,
organelle=organelle_object_of_organelle_id[organelle_id])
# Update the host organism associations
uniprot_host_objects = UniProtHostOrganism.objects.filter(
uniprot__exact=uniprot)
uniprot_host_object_of_host_id = {}
for uniprot_host_object in uniprot_host_objects:
uniprot_host_object_of_host_id[uniprot_host_object.host_organism.id] \
= uniprot_host_object
db_host_ids = set(uniprot_host_object_of_host_id.keys())
host_object_of_host_id = {}
host_ids = [
int(host_spec.split(';')[0]) for host_spec in record.host_organism
]
host_objects = UniProtTaxonomy.objects.filter(id__in=host_ids)
for host_object in host_objects:
host_object_of_host_id[host_object.id] = host_object
uniprot_dat_host_ids = set(host_object_of_host_id.keys())
for host_id in set(host_ids) - uniprot_dat_host_ids:
print "Unknown host taxonomy id %d when parsing %s;" \
% (host_id, record.entry_name),
print "UniProtTaxonomy table may be out of date."
for host_id in db_host_ids - uniprot_dat_host_ids:
uniprot_host_object_of_host_id[host_id].delete()
for host_id in uniprot_dat_host_ids - db_host_ids:
UniProtHostOrganism.objects.create(
uniprot=uniprot, host_organism=host_object_of_host_id[host_id])
# Update the literature references
uniprot_literature_objects = UniProtLiterature.objects.filter(
uniprot__exact=uniprot)
uniprot_literature_object_of_title = {}
for uniprot_literature_object in uniprot_literature_objects:
uniprot_literature_object_of_title[uniprot_literature_object.title] \
= uniprot_literature_object
db_titles = set(uniprot_literature_object_of_title.keys())
uniprot_dat_ref_of_title = {}
for ref in record.references:
titles = ref.title.split(';')
for title in titles:
uniprot_dat_ref_of_title[title.strip('"')] = ref
uniprot_dat_titles = set(uniprot_dat_ref_of_title.keys())
for title in db_titles - uniprot_dat_titles:
uniprot_literature_object_of_title[title].delete()
for title in uniprot_dat_titles:
if title in db_titles:
uniprot_literature_object = uniprot_literature_object_of_title[
title]
else:
uniprot_literature_object \
= UniProtLiterature.objects.create(uniprot = uniprot, title = title)
ref = uniprot_dat_ref_of_title[title]
uniprot_literature_object.authors = ref.authors
positional_info = ' '.join(ref.positions)
m = large_scale_re.search(positional_info)
if m:
uniprot_literature_object.is_large_scale_f = True
for db_name, db_reference in ref.references:
if db_name == 'MEDLINE':
uniprot_literature_object.medline_ui = db_reference
elif db_name == 'PubMed':
uniprot_literature_object.pmid = db_reference
elif db_name == 'DOI':
uniprot_literature_object.doi = db_reference
elif db_name == 'AGRICOLA':
uniprot_literature_object.agricola = db_reference
uniprot_literature_object.save()
# Find cross references to other databases
geneids = set()
go_evidence_of_go_accession = {}
pfam_accessions = set()
extent_of_pdb_chain_ids = {}
for reference in record.cross_references:
if reference[0] == 'GeneID':
geneids.add(reference[1])
elif reference[0] == 'GO':
if len(reference) >= 4:
go_evidence_of_go_accession[reference[1]] \
= reference[3].split(':')[0]
elif reference[0] == 'Pfam':
pfam_accessions.add(reference[1])
elif reference[0] == 'PDB':
pdb_id = reference[1].lower()
chain_ids = reference[4].split('=')[0].split('/')
pdb_from_residue = None
pdb_to_residue = None
fields = reference[4].split('=')
if len(fields) > 1:
try:
pdb_from_residue, pdb_to_residue \
= [int(x) for x in fields[1].split('-')]
except IndexError:
pdb_from_residue = None
pdb_to_residue = None
except ValueError:
pdb_from_residue = None
pdb_to_residue = None
for chain_id in chain_ids:
pdb_chain_id = pdb_id + chain_id
extent_of_pdb_chain_ids[pdb_chain_id] \
= (pdb_from_residue, pdb_to_residue)
# Update the GeneID associations
uniprot_geneid_objects = UniProtGeneID.objects.filter(
uniprot__exact=uniprot)
uniprot_geneid_object_of_geneid = {}
for uniprot_geneid_object in uniprot_geneid_objects:
uniprot_geneid_object_of_geneid[uniprot_geneid_object.geneid] \
= uniprot_geneid_object
db_geneids = set(uniprot_geneid_object_of_geneid.keys())
for geneid in db_geneids - geneids:
uniprot_geneid_object_of_geneid[geneid].delete()
for geneid in geneids - db_geneids:
UniProtGeneID.objects.create(uniprot=uniprot, geneid=geneid)
# Update the GO associations
uniprot_go_objects = UniProtGO.objects.filter(uniprot__exact=uniprot)
uniprot_go_object_of_go_term_accession = {}
for uniprot_go_object in uniprot_go_objects:
uniprot_go_object_of_go_term_accession[uniprot_go_object.go_term.acc] \
= uniprot_go_object
db_go_term_accessions = set(
uniprot_go_object_of_go_term_accession.keys())
go_term_objects = GO_Term.objects.filter(
acc__in=go_evidence_of_go_accession.keys())
go_term_object_of_go_term_accession = {}
for go_term_object in go_term_objects:
go_term_object_of_go_term_accession[go_term_object.acc] \
= go_term_object
uniprot_dat_go_term_accessions \
= set(go_term_object_of_go_term_accession.keys())
for go_accession in set(go_evidence_of_go_accession.keys()) - \
uniprot_dat_go_term_accessions:
print "Unrecognized GO accession %s while parsing %s" \
% (go_accession, record.entry_name),
print "GO term table may be out of date."
for go_evidence_code in set(go_evidence_of_go_accession.values()) - \
set(go_evidence_object_of_go_evidence_code.keys()):
print "Unrecognized GO evidence code %s while parsing %s" \
% (go_evidence_code, record.entry_name),
print "GO evidence_priority table may be out of date."
for go_term_accession in db_go_term_accessions \
- uniprot_dat_go_term_accessions:
uniprot_go_object_of_go_term_accession[go_term_accession].delete()
for go_term_accession in uniprot_dat_go_term_accessions:
go_evidence_code = go_evidence_of_go_accession[go_term_accession]
if go_evidence_code in go_evidence_object_of_go_evidence_code:
go_evidence_object = \
go_evidence_object_of_go_evidence_code[go_evidence_code]
if go_term_accession in db_go_term_accessions:
uniprot_go \
= uniprot_go_object_of_go_term_accession[go_term_accession]
if uniprot_go.go_evidence.evidence != go_evidence_code:
uniprot_go.go_evidence = go_evidence_object
uniprot_go.save()
else:
UniProtGO.objects.create(
go_term=go_term_object_of_go_term_accession[
go_term_accession],
go_evidence=go_evidence_object,
uniprot=uniprot)
# Update the Pfam associations
uniprot_pfam_objects = UniProtPfam.objects.filter(
uniprot__exact=uniprot)
uniprot_pfam_object_of_pfam_accession = {}
for uniprot_pfam_object in uniprot_pfam_objects:
uniprot_pfam_object_of_pfam_accession[
uniprot_pfam_object.pfam.accession] = uniprot_pfam_object
db_pfam_accessions = set(uniprot_pfam_object_of_pfam_accession.keys())
pfam_object_of_pfam_accession = {}
for pfam_accession in pfam_accessions:
pfam_objects = Pfam.objects.filter(
accession__exact=pfam_accession).order_by(
'overall_pfam_version').reverse()
if pfam_objects:
pfam_object = pfam_objects[0]
pfam_object_of_pfam_accession[
pfam_object.accession] = pfam_object
else:
print "Unknown Pfam accession %s encountered when parsing %s" \
% (pfam_accession, record.entry_name),
print "Pfam table may be out of date"
uniprot_dat_pfam_accessions = set(pfam_object_of_pfam_accession.keys())
for pfam_accession in db_pfam_accessions - uniprot_dat_pfam_accessions:
uniprot_pfam_object_of_pfam_accession[pfam_accession].delete()
for pfam_accession in uniprot_dat_pfam_accessions - db_pfam_accessions:
UniProtPfam.objects.create(
uniprot=uniprot,
pfam=pfam_object_of_pfam_accession[pfam_accession])
# Update the PDB associations
uniprot_pdb_chain_objects = UniProtPDB_Chain.objects.filter(
uniprot__exact=uniprot)
uniprot_pdb_chain_object_of_pdb_chain_id = {}
for uniprot_pdb_chain_object in uniprot_pdb_chain_objects:
pdb_chain_id = uniprot_pdb_chain_object.pdb_chain.pdb.id + \
uniprot_pdb_chain_object.pdb_chain.chain_id
uniprot_pdb_chain_object_of_pdb_chain_id[pdb_chain_id] \
= uniprot_pdb_chain_object
db_pdb_chain_ids = set(uniprot_pdb_chain_object_of_pdb_chain_id.keys())
pdb_chain_object_of_pdb_chain_id = {}
for pdb_chain_id in extent_of_pdb_chain_ids.keys():
pdb_chain_objects = PDB_Chain.objects.filter(
pdb__id__exact=pdb_chain_id[0:4],
chain_id__exact=pdb_chain_id[4:])
if pdb_chain_objects:
pdb_chain_object = pdb_chain_objects[0]
pdb_chain_object_of_pdb_chain_id[
pdb_chain_id] = pdb_chain_object
else:
print "Unknown PDB chain %s encountered when parsing %s" \
% (pdb_chain_id, record.entry_name),
print "The PDB_Chain table may be out of date."
uniprot_dat_pdb_chain_ids = set(
pdb_chain_object_of_pdb_chain_id.keys())
for pdb_chain_id in db_pdb_chain_ids - uniprot_dat_pdb_chain_ids:
uniprot_pdb_chain_object_of_pdb_chain_id[pdb_chain_id].delete()
for pdb_chain_id in uniprot_dat_pdb_chain_ids:
pdb_from_residue, pdb_to_residue = extent_of_pdb_chain_ids[
pdb_chain_id]
if pdb_from_residue:
if pdb_chain_id in db_pdb_chain_ids:
uniprot_pdb_chain \
= uniprot_pdb_chain_object_of_pdb_chain_id[pdb_chain_id]
uniprot_pdb_chain.from_residue = pdb_from_residue
uniprot_pdb_chain.to_residue = pdb_to_residue
uniprot_pdb_chain.save()
else:
UniProtPDB_Chain.objects.create(
uniprot=uniprot,
pdb_chain=pdb_chain_object_of_pdb_chain_id[
pdb_chain_id],
from_residue=pdb_from_residue,
to_residue=pdb_to_residue)
else:
UniProtPDB_Chain.objects.create(
uniprot=uniprot,
pdb_chain=pdb_chain_object_of_pdb_chain_id[pdb_chain_id])
# Update the feature table (position-specific information)
if new_uniprot or options.update_features:
# Unfortunately, there is no part of a feature table entry that is
# guaranteed to persist from one release of UniProt of the next (except
# the FTid, but that's not always present). Therefore there's no way to
# easily determine that a feature in the uniprot.dat line is the same or
# nearly the same as one that's already in the database. So, we update
# the features by simply inserting all the entries anew and deleting the
# old ones (without trying to check if they were the same or modify the
# old ones). So, we get the old feature entries first so we can delete
# them later.
uniprot_feature_objects = UniProtFeature.objects.filter(
uniprot__exact=uniprot)
# Instantiate the queryset by turning it into a list. Otherwise, it
# won't be instantiated until we get to the bottom and loop over these to
# delete them, at which point it would delete *all* of them (including
# the ones we just created).
uniprot_feature_object_list = list(uniprot_feature_objects)
# The fields from_residue_is_uncertain, to_residue_is_uncertain,
# extends_n_terminally, and extends_c_terminally derive from the FT line
# in the uniprot.dat line, according to the UniProt KnowledgeBase user
# manual:
# When a feature is known to extend beyond the position that is given in
# the feature table, the endpoint specification will be preceded by '<'
# for features which continue to the left end (N-terminal direction) or
# by '>' for features which continue to the right end (C- terminal
# direction); Unknown endpoints are denoted by '?'. Uncertain endpoints
# are denoted by a '?' before the position, e.g. '?42'.
for feature in record.features:
key_name, from_residue_spec, to_residue_spec, description, \
ftid = feature
if key_name in feature_key_object_of_key_name:
feature_key = feature_key_object_of_key_name[key_name]
# Check for nonexperimental qualifier
nonexperimental_qualifier = None
m = nonexperimental_re.search(description)
if m:
nonexperimental_qualifier \
= nonexperimental_qualifier_object_of_description[m.group(0)]
created_object = False
if key_name == 'VARIANT':
# Check for dbSNP:rsaccession_number
dbSNP_rs_accession = None
m = dbSNPrs_re.search(description)
if m:
dbSNP_rs_accession = int(m.group(1))
if nonexperimental_qualifier:
if ftid == '':
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description,
dbsnp_rs_number=dbSNP_rs_accession,
nonexperimental_qualifier=
nonexperimental_qualifier)
else:
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description,
feature_identifier=ftid,
dbsnp_rs_number=dbSNP_rs_accession,
nonexperimental_qualifier=
nonexperimental_qualifier)
else:
if ftid == '':
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description,
dbsnp_rs_number=dbSNP_rs_accession)
else:
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description,
feature_identifier=ftid,
dbsnp_rs_number=dbSNP_rs_accession)
created_object = True
elif key_name == 'MOD_RES' and from_residue_spec == to_residue_spec:
# Look for the post-translational modification type
found_ptm = False
for reference in record.references:
if found_ptm:
break
positional_info = ' '.join(reference.positions)
ptm_tokens = ptm_re.split(positional_info)
if len(ptm_tokens) > 1:
for i in range((len(ptm_tokens) - 1) / 2):
modification = ptm_tokens[2 * i + 1]
string_with_position = ptm_tokens[2 * i +
2]
match_position = ptm_pos_re.search(
string_with_position)
if match_position:
position = int(match_position.group(1))
if position == from_residue:
# Success!
found_ptm = True
ptm_type = ptm_type_object_of_modification[
modification]
break
if found_ptm:
if nonexperimental_qualifier:
if ftid == '':
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description,
posttranslational_modification_type=
ptm_type,
nonexperimental_qualifier=
nonexperimental_qualifier)
else:
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description,
feature_identifier=ftid,
posttranslational_modification_type=
ptm_type,
nonexperimental_qualifier=
nonexperimental_qualifier)
else:
if ftid == '':
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description,
posttranslational_modification_type=
ptm_type)
else:
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description,
feature_identifier=ftid,
posttranslational_modification_type=
ptm_type)
created_object = True
if not created_object:
if nonexperimental_qualifier:
if ftid == '':
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description,
nonexperimental_qualifier=
nonexperimental_qualifier)
else:
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description,
feature_identifier=ftid,
nonexperimental_qualifier=
nonexperimental_qualifier)
else:
if ftid == '':
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description)
else:
feature_obj = UniProtFeature.objects.create(
uniprot=uniprot,
feature_key=feature_key,
description=description,
feature_identifier=ftid)
else:
print "Unrecognized feature key %s while parsing %s" \
% (key_name, record.entry_name)
# Parse the from_residue and to_residue and update the appropriate
# fields in the object.
try:
from_residue = int(from_residue_spec)
feature_obj.from_residue = from_residue
feature_obj.save()
except ValueError:
if from_residue_spec != '?':
for i in range(len(from_residue_spec)):
if from_residue_spec[i] == '<':
feature_obj.extends_n_terminally = True
elif from_residue_spec[i] == '>':
# We don't expect this to happen, but anyway...
feature_obj.extends_c_terminally = True
elif from_residue_spec[i] == '?':
feature_obj.from_residue_is_uncertain = True
else:
break
feature_obj.from_residue = int(from_residue_spec[i:])
feature_obj.save()
try:
to_residue = int(to_residue_spec)
feature_obj.to_residue = to_residue
feature_obj.save()
except ValueError:
if to_residue_spec != '?':
for i in range(len(to_residue_spec)):
if to_residue_spec[i] == '<':
# We don't expect this to happen, but anyway...
feature_obj.extends_n_terminally = True
elif to_residue_spec[i] == '>':
feature_obj.extends_c_terminally = True
elif to_residue_spec[i] == '?':
feature_obj.to_residue_is_uncertain = True
else:
break
feature_obj.to_residue = int(to_residue_spec[i:])
feature_obj.save()
# Delete the old feature entries.
for uniprot_feature_object in uniprot_feature_object_list:
uniprot_feature_object.delete()
for id in uniprot_ids_to_delete:
uniprot_of_uniprot_id[id].delete()
# The SwissProt parser may have eaten many characters from the next record
# by this point, buffering them away until we ask for the next record. So
# if we set current_pos from f.tell() now, we will get the wrong answer.
# Instead, we will update current_pos by reading lines from pos_f, without
# parsing them--we're just looking for the record separator.
line = pos_f.readline()
while len(line) >= 2 and line[0:2] != '//':
line = pos_f.readline()
current_pos = pos_f.tell()
num_records += 1
if sharding:
if current_pos > end_pos:
break
def main():
basepath = '/clusterfs/ohana/bpg/Hpylori26695/GHGs'
os.chdir(basepath)
f = open('Helicobacter_pylori_26695')
input_records = SeqIO.to_dict(SeqIO.parse(f, "fasta"))
f.close()
set_cover_dict = {}
seed_dict = {}
f = open("clusters")
lines = f.readlines()
f.close()
for line in lines:
if line.split()[0] == 'Cluster':
starting_cluster = True
else:
if starting_cluster:
seed_id = line.split()[0]
set_cover_dict[seed_id] = seed_id
seed_dict[seed_id] = set([seed_id])
starting_cluster = False
else:
seq_id = line.split()[0]
set_cover_dict[seq_id] = seed_id
seed_dict[seed_id].add(seq_id)
uppercase_translation = string.maketrans(string.lowercase, string.uppercase)
dotdash='.-'
seed_paths = glob.glob('seeds*/*')
for seed_path in seed_paths:
seed_dir, seed = os.path.split(seed_path)
sought_seguids = [(id, CheckSum.seguid(input_records[id].seq))
for id in
seed_dict[('lcl|%s' % seed)]]
alignment_paths = glob.glob('%s/bpg*.a2m' % seed_path)
if alignment_paths:
family_id = int(os.path.splitext(os.path.split(alignment_paths[0])[1])[0][3:])
family = Family.objects.get(id = family_id)
root = family.canonical_root_node()
tree_node_objects = TreeNode.objects.filter(tree = family.canonical_tree,
sequence_header__isnull = False).order_by('left_id')
sequence_headers = [node.sequence_header for node in tree_node_objects]
tree_node_alignment_objs = \
TreeNodeAlignment.objects.filter(tree_node = root)
alignment_of_sequence_header = {}
for obj in tree_node_alignment_objs:
alignment_of_sequence_header[obj.sequence_header] = obj
sequence_headers_of_seguid = {}
for obj in tree_node_alignment_objs:
seguid = obj.sequence_header.sequence.seguid
if seguid not in sequence_headers_of_seguid:
sequence_headers_of_seguid[seguid] = set()
sequence_headers_of_seguid[seguid].add(obj.sequence_header)
for id, seguid in sought_seguids:
if seguid in sequence_headers_of_seguid:
uniprot_identifiers = list(set(
[sequence_header.uniprot.uniprot_identifier for
sequence_header in sequence_headers_of_seguid[seguid]
if sequence_header.uniprot]))
if uniprot_identifiers:
print '%s,"%s"' % (id, ','.join(uniprot_identifiers))
else:
the_sequence_header = list(sequence_headers_of_seguid[seguid])[0]
seq0 = alignment_of_sequence_header[
the_sequence_header].aligned_sequence.chars
max_percent_id = 0.0
closest_uniprot = None
for obj in tree_node_alignment_objs:
if obj.sequence_header.uniprot:
seq1 = obj.aligned_sequence.chars
pwid = BPGPWID.pairwise_identity_KS_1(seq0, seq1)
if pwid > max_percent_id:
max_percent_id = pwid
closest_uniprot = obj.sequence_header.uniprot
print '%s,"%s(%0.3f)"' % (id, closest_uniprot.uniprot_identifier,
max_percent_id)
else:
print "No exact match for %s" % id
else:
alignment_path = '%s/final.a2m' % seed_path
if os.path.exists(alignment_path):
uniprot_identifiers_of_seguid = {}
f = open(alignment_path)
flowerpower_alignment = SeqIO.to_dict(SeqIO.parse(f, "fasta"))
f.close()
for id in flowerpower_alignment:
if id[0:3] == 'tr|' or id[0:3] == 'sp|':
unaligned_seq = flowerpower_alignment[
id].seq.tostring().translate(uppercase_translation, dotdash)
seguid = CheckSum.seguid(unaligned_seq)
if seguid not in uniprot_identifiers_of_seguid:
uniprot_identifiers_of_seguid[seguid] = set()
uniprot_identifiers_of_seguid[seguid].add(id.split('|')[2])
for id, seguid in sought_seguids:
if seguid in uniprot_identifiers_of_seguid:
print '%s,"%s"' % (id,
','.join(list(uniprot_identifiers_of_seguid[seguid])))
else:
print "No exact match for %s" % id
else:
print "Seed %s has not been FlowerPowered" % seed
def buildFamily(alignmentfilename, njtree, njbootstrap, mltree, sciphy, astats,
fasttree):
"""main routine for buildFamily, runs the pipeline..."""
starttime = time.time()
print 'reading input alignment %s...' % alignmentfilename,
sys.stdout.flush()
# get base name based on name of alignment file
# this will be used to create names for tree files, etc
basename = os.path.splitext(alignmentfilename)[0]
# read input alignment
handle = open(alignmentfilename, 'r')
alignmentrecords = list(SeqIO.parse(handle, 'fasta'))
handle.close()
# check alignment for duplicate entries
num_duplicates = 0
sequences_of_seguid_of_id = {}
for record in alignmentrecords:
id = record.id
description = record.description
seq = record.seq.tostring()
seguid = CheckSum.seguid(seq)
if id not in sequences_of_seguid_of_id:
sequences_of_seguid_of_id[id] = {}
if seguid not in sequences_of_seguid_of_id[id]:
sequences_of_seguid_of_id[id][seguid] = {}
if seq in sequences_of_seguid_of_id[id][seguid]:
num_duplicates += 1
else:
sequences_of_seguid_of_id[id][seguid][seq] = description
# de-dup the input alignment
if num_duplicates > 0:
print "Found %d duplicates in %s" % (num_duplicates, alignmentfilename)
oldalignmentfilename = basename + '_with_dups.afa'
print "Renaming %s to %s" % (alignmentfilename, oldalignmentfilename)
os.system("mv %s %s" % (alignmentfilename, oldalignmentfilename))
print "Writing de-dupped alignment to %s" % alignmentfilename
f = open(alignmentfilename, "w")
for id in sequences_of_seguid_of_id:
for seguid in sequences_of_seguid_of_id[id]:
for seq in sequences_of_seguid_of_id[id][seguid]:
f.write(">%s\n" % sequences_of_seguid_of_id[id][seguid][seq])
f.write("%s\n" % seq)
f.close()
# create alignment for treebuilding
# also create an ID mapping from internal to fasta identifiers
idmap = {}
treealignment = {}
alignmentdict = {}
id = 1
for record in alignmentrecords:
myid = 'SEQ%d' % id
id += 1
alignmentdict[myid] = record.seq.tostring()
idmap[myid] = record.description
treealignment[myid] = ''
for c in record.seq.tostring():
if c == '-' or c.isupper():
treealignment[myid] += c
# print ID map file (pickle)
idmapfname = basename + '.idmap'
handle = open(idmapfname, 'w')
cPickle.dump(idmap, handle)
handle.close()
endtime = time.time()
print 'done. %s' % getTimeStr(starttime, endtime)
# print alignment file for NJ and build NJ tree
if njtree:
ntaxa = len(alignmentrecords)
if ntaxa >= 4:
starttime = time.time()
print 'inferring tree by neighbor joining...',
sys.stdout.flush()
inferNJTree(basename, treealignment, njbootstrap)
endtime = time.time()
print 'done. %s' % getTimeStr(starttime, endtime)
else:
print 'too few sequences (%d) to build neighbor joining tree, skipping.' % (ntaxa)
# print alignment for ML tree and build ML tree
if mltree:
ntaxa = len(alignmentrecords)
if ntaxa >= 4:
starttime = time.time()
print 'inferring tree by maximum likelihood...',
sys.stdout.flush()
inferMLTree(basename, treealignment, fasttree)
endtime = time.time()
print 'done. %s' % getTimeStr(starttime, endtime)
else:
print 'too few sequences (%d) to build maximum likelihood tree, skipping.' % (ntaxa)
# create family-level hmm
starttime = time.time()
print 'creating general hidden Markov model...',
sys.stdout.flush()
createHMM(basename, alignmentfilename)
endtime = time.time()
print 'done. %s' % getTimeStr(starttime, endtime)
# get PFam domains
starttime = time.time()
print 'inferring PFam domains...',
sys.stdout.flush()
inferPFam(basename)
endtime = time.time()
print 'done. %s' % getTimeStr(starttime, endtime)
# get transmembrane and signal peptide predictions
starttime = time.time()
print 'inferring transmembrane domains and signal peptides...',
sys.stdout.flush()
inferTransmembrane(basename)
endtime = time.time()
print 'done. %s' % getTimeStr(starttime, endtime)
# score PDB
starttime = time.time()
print 'retrieving homologous PDB structures...',
sys.stdout.flush()
inferPDB(basename)
endtime = time.time()
print 'done. %s' % getTimeStr(starttime, endtime)
# run SCI-PHY to infer subfamilies
if sciphy:
starttime = time.time()
print 'inferring subfamilies...',
sys.stdout.flush()
inferSubfamilies(basename, alignmentdict)
endtime = time.time()
print 'done. %s' % getTimeStr(starttime, endtime)
# compute alignment conservation
starttime = time.time()
print 'calculating alignment conservation...',
sys.stdout.flush()
computeAlignmentConservation(basename, alignmentfilename)
endtime = time.time()
print 'done. %s' % getTimeStr(starttime, endtime)
# gotta run astats to get bulks of info about who's long, who's short,
# and who's dating whom
starttime = time.time()
print 'calculating alignment statistics...',
sys.stdout.flush()
getAlignmentStatistics(basename, alignmentfilename, astats)
endtime = time.time()
print 'done. %s' % getTimeStr(starttime, endtime)
# record build date
print 'recording build date...',
sys.stdout.flush()
datefname = basename + '.build_date'
handle = open(datefname, 'w')
print >>handle, date.today()
handle.close()
print 'done.'
def main():
if len(sys.argv) < 2:
print "usage: specify taxonomy id"
sys.exit(1)
taxon_id = sys.argv[1]
input_file = sys.argv[2]
logging.basicConfig()
logger = setup_logger(taxon_id)
files = glob.glob(
"/clusterfs/ohana/external/genomes/QuestForOrthologs/Release5/%s_*.fasta"
% taxon_id)
if len(files) == 0:
files = glob.glob(
"/clusterfs/ohana/bpg/coverage/redundant/pfam/after_17GHG/ID/QFO/%s_*.fasta"
% taxon_id)
if len(files) == 0:
#print "Didn't find file"
fh = open(input_file, 'r')
#sys.exit(0)
#fh = open(files[0], 'r')
lines = fh.readlines()
fh.close()
accessions = set()
for line in lines:
if line.strip():
if line[0] == ">":
fields = line.split()
try:
accession = fields[0].split(":")[1]
except:
accession = fields[0].split("|")[1]
accessions.add(accession)
o = open('%s.coverage' % taxon_id, 'w')
num_covered = GHG_num_covered = GHG_over2_covered = Pfam_num_covered = 0
for accession in accessions:
# First search the uniprot accession in the UniProt_Dat_Index table
uniprot_dat_indices = UniProtDatIndex.objects.filter(
uniprot_accession=accession)
if uniprot_dat_indices:
uniprot_object = uniprot_dat_indices[0].uniprot
if TreeNodeAlignment.objects.filter(
sequence_header__uniprot=uniprot_object,
tree_node__tree__family__active=True).exclude(
tree_node__tree__family__status__exact='bad'):
num_covered += 1
TNA = TreeNodeAlignment.objects.filter(
sequence_header__uniprot=uniprot_object,
tree_node__tree__family__active=True,
tree_node__tree__family__family_type='G').exclude(
tree_node__tree__family__status__exact='bad')
if len(TNA) > 0:
GHG_num_covered += 1
GHG_over2_covered += get_family_size(TNA)
if TreeNodeAlignment.objects.filter(
sequence_header__uniprot=uniprot_object,
tree_node__tree__family__active=True,
tree_node__tree__family__family_type='C').exclude(
tree_node__tree__family__status__exact='bad'):
Pfam_num_covered += 1
else:
log(logger, "%s is not covered in the database\n" % accession)
# if the accession is not in the uniprot_dat_index table, use seguid to
# find identical sequences
else:
log(logger,
"%s is not in uniprot_dat_index, try the seguid\n" % accession)
uniprot_accession = accession
if uniprot_accession_re1.match(uniprot_accession) or \
uniprot_accession_re2.match(uniprot_accession):
fasta_file = '%s.fasta' % uniprot_accession
cmd = 'wget http://www.uniprot.org/uniprot/%s' % fasta_file
try:
os.system(cmd)
except:
log(logger, "Unable to download sequence from UniProt\n")
response = open(fasta_file, 'r')
record = SeqIO.parse(response, 'fasta').next()
response.close()
os.remove(fasta_file)
seguid = CheckSum.seguid(record.seq)
sequence_objects = Sequence.objects.filter(
seguid__exact=seguid)
if sequence_objects:
if TreeNodeAlignment.objects.filter(
sequence_header__sequence__in=sequence_objects,
tree_node__tree__family__active=True).exclude(
tree_node__tree__family__status__exact='bad'):
num_covered += 1
TNA = TreeNodeAlignment.objects.filter(
sequence_header__sequence__in=sequence_objects,
tree_node__tree__family__active=True,
tree_node__tree__family__family_type='G').exclude(
tree_node__tree__family__status__exact='bad')
if len(TNA) > 0:
GHG_num_covered += 1
GHG_over2_covered += get_family_size(TNA)
if TreeNodeAlignment.objects.filter(
sequence_header__sequence__in=sequence_objects,
tree_node__tree__family__active=True,
tree_node__tree__family__family_type='C'
).exclude(
tree_node__tree__family__status__exact='bad'):
Pfam_num_covered += 1
else:
o.write("There are no families containing %s.\n" %
accession)
else:
log(
logger, "%s is not in the PhyloFacts 3 database.\n" %
accession)
else:
print "The argument must be a valid UniProt accession\n"
taxon = UniProtTaxonomy.objects.get(id=taxon_id)
print "Coverage for %s" % taxon.scientific_name
print "Source: EBI Reference Proteome (http://www.ebi.ac.uk/reference_proteomes/)"
lineage = taxon.lineage()
print "Taxonomy: %s" % "/".join([str(item) for item in lineage])
print "Number of genes in genome = %d" % len(accessions)
print "Number of genes covered = %d" % num_covered
coverage_GHG = float(GHG_num_covered) / len(accessions)
coverage_GHG_over2 = float(GHG_over2_covered) / len(accessions)
coverage_Pfam = float(Pfam_num_covered) / len(accessions)
coverage_any = float(num_covered) / len(accessions)
log(logger, "Coverage = %g" % coverage_any)
o.write(
'taxon ID,scientific name,# of proteins,# covered,% covered,# covered by \
GHG,% covered by GHG,# covered by GHG of size>=3,% covered by GHG of size >=3,# covered by Pfam, %covered by Pfam\n'
)
o.write('%s,%s,%d,%d,%3.1f,%d,%3.1f,%d,%3.1f,%d,%3.1f\n' %
(taxon_id, taxon.scientific_name, len(accessions), num_covered,
coverage_any * 100, GHG_num_covered, coverage_GHG * 100,
GHG_over2_covered, coverage_GHG_over2 * 100, Pfam_num_covered,
coverage_Pfam * 100))
o.close()
def insertFamilyIntoDB(alignment_path,
assume_seed_first=False,
seed_id=None,
build_database_source="UniProt",
gathering_method="FlowerPower",
private=False,
family_specific_evalue_criterion=None,
famiy_specific_sw_method=None,
notes=None,
build_alignment_notes_id=0,
family_type_id='C'):
workdir, alignment_filename = os.path.split(alignment_path)
os.chdir(workdir)
# Read in the alignment
f = open(alignment_filename)
alignments = AlignIO.parse(f, 'fasta')
# AlignIO.parse returns a list of alignments. We only want one
# alignment, so we take the first one (there shouldn't be any more
# for our inputs anyhow)
for alignment in alignments:
break
basename = os.path.splitext(alignment_filename)[0]
msg = 'This file should have been created by buildFamily.py.'
# Look for the ID mapping from SEQ num identifiers to fasta headers
idmap_filename = basename + '.idmap'
if not os.path.exists(idmap_filename):
print "File %s not found. %s" % (idmap_filename, msg)
return 1
f = open(idmap_filename)
idmap = cPickle.load(f)
f.close()
# Reverse the ID mapping
seqid_of_description = {}
for seqid in idmap:
seqid_of_description[idmap[seqid]] = seqid
# Assert assumptions from buildFamily. The idmap is a mapping between
# both unique SEQs and unique headers
assert (len(seqid_of_description.keys()) == len(idmap.keys()))
sequence_of_seqid = {}
aligned_sequence_of_seqid = {}
sequence_header_of_seqid = {}
seed_sequence_header = None
num_aligned_columns = 0
# For each sequence in the alignment, make sure records exist in the
# sequence, sequence_header, and aligned_sequence tables
for record in alignment:
seed_sequence_header = update_sequence_info(
record, seed_id, seqid_of_description, aligned_sequence_of_seqid,
num_aligned_columns, sequence_of_seqid, sequence_header_of_seqid,
assume_seed_first, seed_sequence_header)
canonical_tree_method = ""
root_of_method = {}
if len(sequence_header_of_seqid) < 4:
# There won't be an actual tree, so make a fake one
root_of_method['trivial'] = node()
for seqid in sequence_header_of_seqid.keys():
child = node(seqid=seqid)
child.branch_length = 1.0
root_of_method['trivial'].addChild(child)
canonical_tree_method = "trivial"
ml_tree_filename = None
nj_tree_filename = None
else:
nj_tree_filename = basename + ".nj.rooted.tre"
ml_tree_filename = basename + ".fasttree.ml.rooted.tre"
# TODO: We should also check that the tree files are nonempty. If both are
# empty we should create a trivial tree.
if os.path.exists(ml_tree_filename):
root_of_method['ml'] = node()
f = open(ml_tree_filename)
treeString = f.read()
f.close()
treeString = treeString.translate(trivial_translation,
string.whitespace)
root_of_method['ml'].readFromTreeString(treeString, 0)
canonical_tree_method = "ml"
if os.path.exists(nj_tree_filename):
root_of_method['nj'] = node()
f = open(nj_tree_filename)
treeString = f.read()
f.close()
treeString = treeString.translate(trivial_translation,
string.whitespace)
root_of_method['nj'].readFromTreeString(treeString, 0)
if canonical_tree_method == "":
canonical_tree_method = "nj"
if canonical_tree_method == "":
print "No tree file found. %s" % msg
return 1
# Try to read the build date from a file, otherwise assume it is today
build_date_filename = basename + ".build_date"
build_date = datetime.date.today()
if os.path.exists(build_date_filename):
try:
f = open(build_date_filename)
year, month, day = [
int(field) for field in f.read().strip().split('-')
]
f.close()
build_date = datetime.date(year, month, day)
except ValueError:
pass
# Try to get the build_alignment_notes, if applicable
if build_alignment_notes_id > 0:
build_alignment_notes = BuildAlignmentNotes.objects.get(
id__exact=build_alignment_notes_id)
# At this point we have the minimum information necessary, namely an
# alignment and a tree, so we can go ahead and create a family
# TODO: We should set the status to "bad" here, and then update the status to
# "draft" at the very end.
family = Family.objects.create(
build_database_source=build_database_source,
build_date=build_date,
status="draft", # all families start out as draft
private=private,
gathering_method=gathering_method,
family_type_id=family_type_id,
partition="B", # all families start in B partition
)
# Now we have created a new family accession
family_accession = 'bpg%07d' % family.id
print family_accession
# Create the appropriate directories and symbolic links
pfacts_base_dir = '/clusterfs/ohana/bpg/pfacts'
dir1 = os.path.join(pfacts_base_dir, family_accession[0:4])
dir2 = os.path.join(dir1, family_accession[0:7])
dir3 = os.path.join(dir2, family_accession)
if not os.path.exists(dir1):
os.mkdir(dir1)
if not os.path.exists(dir2):
os.mkdir(dir2)
if not os.path.exists(dir3):
os.chdir(dir2)
os.symlink(workdir, family_accession)
os.chdir(workdir)
# Create symbolic links to files
os.symlink(alignment_filename, family_accession + '.a2m')
os.symlink(idmap_filename, family_accession + '.idmap')
if ml_tree_filename is not None and os.path.exists(ml_tree_filename):
replace_seqids_by_seq_header_ids(ml_tree_filename,
family_accession + '.ml',
sequence_header_of_seqid)
if nj_tree_filename is not None and os.path.exists(nj_tree_filename):
replace_seqids_by_seq_header_ids(nj_tree_filename,
family_accession + '.nj',
sequence_header_of_seqid)
# Link in the build_alignment_notes
if build_alignment_notes_id > 0:
family.build_alignment_notes = build_alignment_notes
family.save()
# Create the tree objects
tree_of_method = {}
for method in ['trivial', 'nj', 'ml']:
if method in root_of_method:
tree_of_method[method] = Tree.objects.create(family=family,
method=method,
is_rsd_rooted=False)
canonical_tree = tree_of_method[canonical_tree_method]
# Link the canonical tree to the family
family.canonical_tree = canonical_tree
family.save()
# Link the seed sequence header to the family
if seed_sequence_header:
family.seed_sequence_header = seed_sequence_header
family.save()
# Do the modified pre-order tree traversal to find the leftIds and rightIds
# of each of the nodes
for method in ['trivial', 'nj', 'ml']:
if method in root_of_method:
root_of_method[method].updateLeftId(1, 0)
# Create tree_node objects for each tree
# The leaf nodes will be linked to sequence_header objects
for method in ['trivial', 'nj', 'ml']:
if method in root_of_method:
root_of_method[method].createTreeNodeObjects(
tree_of_method[method], sequence_header_of_seqid)
# Link the family alignment to the root of each tree
# It appears redundant to link the family alignment multiple times, but this
# is not the case. If we subsequently run SATCHMO-JS, we will create a new
# tree for this family with method 'satchmo-js', and the alignment linked to
# the root of that tree will be a different alignment, namely the one output
# by SATCHMO-JS. We will also link the SATCHMO-JS subalignments to the
# internal nodes of that tree, and we may make that tree the canonical tree.
for method in ['trivial', 'nj', 'ml']:
if method in root_of_method:
root_node = root_of_method[method].tree_node
for seqid in aligned_sequence_of_seqid:
TreeNodeAlignment.objects.create(
tree_node=root_node,
aligned_sequence=aligned_sequence_of_seqid[seqid],
sequence_header=sequence_header_of_seqid[seqid])
# Now link some family data to the root of the canonical tree
# TODO: Write a procedure for changing the canonical tree. This procedure
# must link all this family data to the root of the new canonical tree.
canonical_root_node = root_of_method[canonical_tree_method].tree_node
# Link the family HMMs
sam_hmm_filename = basename + '.mod'
if os.path.exists(sam_hmm_filename):
os.symlink(sam_hmm_filename, family_accession + '.mod')
sam_hmm = HMM.objects.create(length=num_aligned_columns,
hmm_type='SAM',
method='w0.5',
tree_node=canonical_root_node)
hmmer_hmm_filename = basename + '.hmm'
if os.path.exists(hmmer_hmm_filename):
# Rewrite the HMMER hmm so its name is the family id
inf = open(hmmer_hmm_filename)
hmm_lines = inf.readlines()
inf.close()
outf = open((family_accession + '.hmm'), "w")
for line in hmm_lines:
if line[0:4] == 'NAME':
outf.write("NAME %s\n" % family_accession)
else:
outf.write(line)
outf.close()
hmmer_hmm = HMM.objects.create(length=num_aligned_columns,
hmm_type='HMMER3',
method='hmmbuild',
tree_node=canonical_root_node)
# Link the family consensus sequence
consensus_sequence_filename = basename + '.con.fa'
if os.path.exists(consensus_sequence_filename):
os.symlink(consensus_sequence_filename, family_accession + '.con.fa')
f = open(consensus_sequence_filename)
record = list(SeqIO.parse(f, "fasta"))[0]
f.close()
consensus_seguid = CheckSum.seguid(record.seq)
# It's not inconceivable that the consensus sequence is already in the
# sequence table. Find the sequence record for this consensus sequence, or
# create it if it isn't there
consensus_sequence = _sequence(Sequence, record.seq.tostring(),
consensus_seguid)
# Link the consensus sequence to the family hmm
hmmer_hmm_consensus = HMM_Consensus.objects.create(
hmm=hmmer_hmm, sequence=consensus_sequence)
# Link the consensus sequence to the canonical tree root.
# It appears redundant that the sequence record is linked here, since the
# sequence record is already linked to the hmm_consensus record. The
# reason for linking the sequence record directly to the
# tree_node_consensus record is that the consensus sequence might not come
# from an HMM; it might be derived directly from the alignment instead. In
# that case there would have been no hmm_consensus record linked to the
# tree_node_consensus record. But there must always be a sequence record
# linked to every tree_node_consensus record.
canonical_root_consensus = TreeNodeConsensus.objects.create(
tree_node=canonical_root_node,
sequence=consensus_sequence,
method='hmm',
hmm_consensus=hmmer_hmm_consensus)
# Insert the alignment conservation
os.symlink(basename + '.alignmentconservation.csv',
family_accession + '.alignmentconservation.csv')
insertAlignmentConservation(family_accession, canonical_root_node)
# Link the PFAM domains
insertPFAMPredictionsIntoDB(consensus_sequence, basename)
# Link the signal peptide and transmembrane prediction
phobius_filename = basename + '.phobius'
if os.path.exists(phobius_filename):
insertPhobiusPredictionsIntoDB(canonical_root_node, phobius_filename)
# Link the homologous PDB structures
insertPDBPredictionsIntoDB(hmmer_hmm, canonical_root_node, basename)
if os.path.exists(build_date_filename):
os.symlink(build_date_filename, family_accession + '.build_date')
print IUPACData.ambiguous_dna_complement #dictionary of complements
#and a lot more
from Bio.Data import CodonTable
print CodonTable.generic_by_id[2]
#SeqUtils. Several functions to deal with DNA and protein sequences.
#DNA utils
import Bio.SeqUtils as SeqUtils
print SeqUtils.GC('gacgatcggtattcgtag') #GC content
from Bio.SeqUtils import MeltingTemp
print MeltingTemp.Tm_staluc('tgcagtacgtatcgt') #DNA/RNA melting temperature
#checksum functions: short alphanumeric string signature of a file or sequence
#usually written in description of sequence
#cgc is a easy, weak, very used checksum (better crc32, crc64)
from Bio.SeqUtils import CheckSum
myseq='acaagatgccattgtcccccggcctcctgctgctgct'
print CheckSum.gcg(myseq)
print CheckSum.crc32(myseq)
print CheckSum.crc64(myseq)
print CheckSum.seguid(myseq)
#Protein utils
from Bio.SeqUtils import ProtParam
myprot=ProtParam.ProteinAnalysis('MLTNK')
print myprot.count_amino_acids()
print myprot.get_amino_acids_percent()
print myprot.molecular_weight()
print myprot.aromaticity()
print myprot.instability_index()
print myprot.flexibility()
print myprot.isoelectric_point()
print myprot.secondary_structure_fraction()
