def main(parser):
args = parser.parse_args()
rows = []
base_columns = [
'chrom', 'source', 'feature', 'start', 'end', 'score', 'strand',
'frame'
]
attr_columns = set()
# Parse rows
gtflines = utils.tab_line_gen(args.infile)
for l in utils.sort_gtf(gtflines):
rowd = dict(zip(base_columns, l[:8]))
for k, v in re.findall('(\S+)\s+"([\s\S]+?)";', l[8]):
attr_columns.add(k)
rowd[k] = v
rows.append(rowd)
# Set column headers
columns = base_columns + list(attr_columns)
if args.keycol in columns:
columns.remove(args.keycol)
columns = [args.keycol] + columns
# Print the table
print >> args.outfile, '\t'.join(columns)
for rowd in rows:
print >> args.outfile, '\t'.join(
[rowd[c] if c in rowd else '' for c in columns])
def main(args):
if args.chroms:
chroms = [l.strip('\n').split('\t')[0] for l in args.chroms]
else:
chroms = None
for l in utils.sort_gtf(utils.tab_line_gen(args.infile), chroms):
print >>args.outfile, '\t'.join(l)
def main(parser):
args = parser.parse_args()
lines = utils.tab_line_gen(args.infile)
clustered = utils.cluster_gtf(lines)
reptypes = utils.by_attribute(clustered, 'repType')
catcount = Counter()
newlines = []
for cnum, c in clustered.iteritems():
c.sort(key=lambda x: int(x[3]))
cluster_id = '%s_%04d' % (args.prefix, int(cnum))
# Categorize cluster according to repeat types and orientation
if reptypes[cnum] == ['ltr', 'internal', 'ltr']:
category = 'prototype'
elif reptypes[cnum] == ['ltr', 'internal'
] or reptypes[cnum] == ['internal', 'ltr']:
category = 'oneside'
elif reptypes[cnum] == ['internal']:
category = 'soloint'
elif reptypes[cnum] == ['ltr']:
category = 'sololtr'
else:
category = 'unusual'
catcount[category] += 1
# Create the parent (merged) annotation
pstart = min(int(l[3]) for l in c)
pend = max(int(l[4]) for l in c)
strands = set(l[6] for l in c)
if len(strands) == 1: pstrand = strands.pop()
else: pstrand = '.' # Strand is ambiguous
pcov = utils.covered_len(c)
pattr = 'name "%s"; category "%s"; nfeats "%d"; length "%d"; cov "%d";' % (
cluster_id, category, len(c), (pend - pstart), pcov)
pline = [
c[0][0], 'merged', 'gene',
str(pstart),
str(pend), '.', pstrand, '.', pattr
]
newlines.append(pline)
for l in c:
l[1] = category
attr = dict(re.findall('(\S+)\s+"([\s\S]+?)";', l[8]))
if 'gene_id' in attr: del attr['gene_id']
if 'transcript_id' in attr: del attr['transcript_id']
l[8] = 'gene_id "%s"; transcript_id "%s"; ' % (cluster_id,
cluster_id)
l[8] = l[8] + ' '.join('%s "%s";' % (k, v)
for k, v in attr.iteritems())
newlines.append(l[:-1])
for l in utils.sort_gtf(newlines):
print >> args.outfile, '\t'.join(l)
for cat in ['prototype', 'oneside', 'soloint', 'sololtr', 'unusual']:
print >> sys.stderr, '%s: %d' % (cat, catcount[cat])
def main(parser):
args = parser.parse_args()
lines = utils.tab_line_gen(args.infile)
clustered = utils.cluster_gtf(lines)
reptypes = utils.by_attribute(clustered, 'repType')
catcount = Counter()
newlines = []
for cnum,c in clustered.iteritems():
c.sort(key=lambda x:int(x[3]))
cluster_id = '%s_%04d' % (args.prefix,int(cnum))
# Categorize cluster according to repeat types and orientation
if reptypes[cnum] == ['ltr','internal','ltr']:
category = 'prototype'
elif reptypes[cnum] == ['ltr','internal'] or reptypes[cnum] == ['internal','ltr']:
category = 'oneside'
elif reptypes[cnum] == ['internal']:
category = 'soloint'
elif reptypes[cnum] == ['ltr']:
category = 'sololtr'
else:
category = 'unusual'
catcount[category] += 1
# Create the parent (merged) annotation
pstart = min(int(l[3]) for l in c)
pend = max(int(l[4]) for l in c)
strands = set(l[6] for l in c)
if len(strands)==1: pstrand = strands.pop()
else: pstrand = '.' # Strand is ambiguous
pcov = utils.covered_len(c)
pattr = 'name "%s"; category "%s"; nfeats "%d"; length "%d"; cov "%d";' % (cluster_id, category, len(c), (pend-pstart), pcov)
pline = [c[0][0], 'merged', 'gene', str(pstart), str(pend), '.', pstrand, '.', pattr]
newlines.append(pline)
for l in c:
l[1] = category
attr = dict(re.findall('(\S+)\s+"([\s\S]+?)";',l[8]))
if 'gene_id' in attr: del attr['gene_id']
if 'transcript_id' in attr: del attr['transcript_id']
l[8] = 'gene_id "%s"; transcript_id "%s"; ' % (cluster_id,cluster_id)
l[8] = l[8] + ' '.join('%s "%s";' % (k,v) for k,v in attr.iteritems())
newlines.append(l[:-1])
for l in utils.sort_gtf(newlines):
print >>args.outfile, '\t'.join(l)
for cat in ['prototype','oneside','soloint','sololtr','unusual']:
print >>sys.stderr, '%s: %d' % (cat, catcount[cat])
def main(args):
### Read the GTF file ################################################################
print >> sys.stderr, 'Loading GTF: %s' % args.internal_file
gtf = [
GTFLine(l) for l in utils.tab_line_gen(open(args.internal_file, 'rU'))
]
### Get model lengths
# mlen = calculate_model_lengths(gtf)
# print mlen
mlen = calculate_model_lengths2(gtf)
print >> sys.stderr, 'Model lengths: %s' % mlen
### Correct the model coordinates ####################################################
correct_model_coordinates(gtf, mlen)
for g in gtf:
if g.strand == '+':
trueend = mlen[g.attr['repName']] + g.attr['repLeft']
else:
trueend = mlen[g.attr['repName']] + g.attr['repStart']
assert trueend == g.attr['repEnd']
### Organize hits by chromosome ######################################################
bychrom = defaultdict(list)
for g in gtf:
bychrom[g.chrom].append(g)
### List of HERV loci ################################################################
print >> sys.stderr, 'Assembling HERV loci'
all_locs = []
### Create HERV loci for plus strand #################################################
for chrom in utils.CHROMNAMES:
if chrom in bychrom:
plus = [h for h in bychrom[chrom] if h.strand == '+']
if not plus: continue
plus.sort(key=lambda x: x.start)
cur = HERVLocus(id='%s_%04d' % (args.prefix, len(all_locs) + 1))
cur.internal.append(plus[0])
for p1 in plus[1:]:
p0 = cur.internal[-1]
# Genomic distance between hits
gdist = p1.start - p0.end
# Determine whether p1 is in sequence with locus
if gdist <= 10: ## Overlapping (or nearly) in genome
insequence = True
else:
## Hits are in sequence and genomic distance is not extreme
insequence = p0.attr['repLeft'] < p1.attr['repLeft']
insequence &= gdist < args.longdist
if insequence:
cur.internal.append(p1)
else:
all_locs.append(cur)
cur = HERVLocus(id='%s_%04d' %
(args.prefix, len(all_locs) + 1))
cur.internal.append(p1)
all_locs.append(cur)
### Create HERV loci for minus strand ################################################
for chrom in utils.CHROMNAMES:
if chrom in bychrom:
minus = [h for h in bychrom[chrom] if h.strand == '-']
if not minus: continue
minus.sort(key=lambda x: x.end,
reverse=True) # Sort in reverse order
cur = HERVLocus(id='%s_%04d' % (args.prefix, len(all_locs) + 1))
cur.internal.append(minus[0])
for p1 in minus[1:]:
p0 = cur.internal[-1]
# Genomic distance between hits
gdist = p0.start - p1.end
# Determine whether p1 is in sequence with locus
if gdist <= 10: ## Overlapping (or nearly) in genome
insequence = True
else:
## Hits are in sequence and genomic distance is not extreme
insequence = p0.attr['repStart'] < p1.attr['repStart']
insequence &= gdist < args.longdist
if insequence:
cur.internal.append(p1)
else:
all_locs.append(cur)
cur = HERVLocus(id='%s_%04d' %
(args.prefix, len(all_locs) + 1))
cur.internal.append(p1)
all_locs.append(cur)
### Add LTRs to HERV loci ############################################################
print >> sys.stderr, 'Finding flanking LTRs'
for loc in all_locs:
loc.find_ltr(args.ltr_files, args.flank)
loc.adjust_overlaps()
print >> sys.stderr, "Initial counts:"
print >> sys.stderr, '\n'.join('%s%d' % (cat.ljust(20, ' '), count)
for cat, count in Counter(
c.category()
for c in all_locs).most_common())
### Filtering ########################################################################
reject = set()
if args.minpct > 0 or args.mincov > 0:
print >> sys.stderr, "Removing loci with less than %d percent or %dbp model coverage" % (
int(args.minpct * 100), args.mincov)
for loc in all_locs:
if loc.model_cov() < (mlen[loc.internal_name()] * args.minpct
) or loc.model_cov() < args.mincov:
print >> sys.stderr, '%s\t%d\t%s' % (loc.id, loc.model_cov(),
loc.category())
reject.add(loc)
for rloc in reject:
all_locs.remove(rloc)
print >> sys.stderr, "After filtering:"
print >> sys.stderr, '\n'.join('%s%d' % (cat.ljust(20, ' '), count)
for cat, count in Counter(
c.category()
for c in all_locs).most_common())
print >> sys.stderr, '%s%d' % ('Rejected'.ljust(20, ' '), len(reject))
### Deal with overlapping loci #######################################################
# Create GTF with all_locs
with open('tmp.gtf', 'w') as outh:
for g in utils.sort_gtf(loc.span_gtf() for loc in all_locs):
print >> outh, '\t'.join(g)
# Cluster overlapping and bookended using bedtools
p1 = Popen('bedtools cluster -i tmp.gtf',
shell=True,
stdout=PIPE,
stderr=PIPE)
out, err = p1.communicate()
os.remove('tmp.gtf')
# Parse bedtools output
overlap_groups = defaultdict(list)
for ll in out.strip('\n').split('\n'):
f = ll.split('\t')
overlap_groups[f[-1]].append(GTFLine(f[:9]))
# Remove clusters with one
for k in overlap_groups.keys():
if len(overlap_groups[k]) == 1:
del overlap_groups[k]
print >> sys.stderr, "%d overlap groups" % len(overlap_groups)
if args.igv_preview and len(overlap_groups) > 0:
print >> sys.stderr, "Loading IGV"
# Create file for IGV viewing
with open('tmp.gtf', 'w') as outh:
liter = utils.sort_gtf(
chain.from_iterable(loc.each_gtf() for loc in all_locs))
print >> outh, '\n'.join('\t'.join(_) for _ in liter)
igv = IGV()
igv.new()
igv.genome('hg19')
igv.load(
os.path.join(os.getcwd(), '../other_sources/rmsk_LTR.hg19.gtf'))
igv.load(os.path.join(os.getcwd(), 'tmp.gtf'))
tandem = []
for k in sorted(overlap_groups.keys(), key=lambda x: int(x)):
ogroup = overlap_groups[k]
if args.igv_preview:
locus_str = '%s:%s-%s' % (ogroup[0].chrom,
min(gl.start for gl in ogroup) - 5000,
max(gl.end for gl in ogroup) + 5000)
igv.goto(locus_str)
igv.expand()
# Get locus for each member of overlap group
og_locus = {}
for o in ogroup:
tmp = [c for c in all_locs if c.id == o.attr['name']]
assert len(tmp) == 1
og_locus[o.attr['name']] = tmp[0]
# Print out the model coverage
for n, loc in og_locus.iteritems():
print >> sys.stderr, '%s\t%d\t%s' % (n, loc.model_cov(),
loc.category())
# Parse user input
z = raw_input('Action to take: ').strip()
if z == '': continue
inputcmd = z.strip().split(' ')
if inputcmd[0] == 'REJECT':
if len(inputcmd) == 1:
# Only max will be kept
st = sorted([loc for n, loc in og_locus.iteritems()],
key=lambda x: x.model_cov(),
reverse=True)[1:]
loc_ids = [_.id for _ in st]
elif len(inputcmd) == 2:
loc_ids = inputcmd[1].split(',')
else:
assert False
for loc_id in loc_ids:
reject.add(og_locus[loc_id])
elif inputcmd[0] == 'TANDEM':
if len(inputcmd) == 1:
assert len(og_locus) == 2, 'More than 2 loci are present'
tandem.append([loc for n, loc in og_locus.iteritems()])
elif len(inputcmd) == 2:
loc_ids = inputcmd[1].split('+')
tandem.append([og_locus[loc_id] for loc_id in loc_ids])
else:
assert False
elif inputcmd[0] == 'DIFF':
n1, n2 = inputcmd[1].split('-')
g1 = og_locus[n1]
g2 = og_locus[n2]
if g1.span()[0] < g2.span()[1]:
g1.shorten(g2.span()[1] + 20, g1.span()[1])
elif g1.span()[1] < g2.span()[0]:
g1.shorten(g1.span()[0], g2.span()[0] - 20)
else:
print "no overlap!"
print g1
elif inputcmd[0] == 'IGNORE':
continue
else:
assert False, 'Unknown command: "%s"' % inputcmd[0]
# Remove rejected annotations
for rloc in reject:
if rloc in all_locs:
all_locs.remove(rloc)
# Create the tandem annotations
for tgroup in tandem:
tandem_loc = HERVLocus(id=tgroup[0].id)
tandem_loc.internal = list(
chain.from_iterable(loc.internal for loc in tgroup))
if tandem_loc.strand() == '+':
tandem_loc.internal.sort(key=lambda x: x.start)
else:
tandem_loc.internal.sort(key=lambda x: x.end, reverse=True)
tandem_loc.find_ltr(args.ltr_files, 1000)
tandem_loc.adjust_overlaps()
tandem_loc.is_tandem = True
all_locs.append(tandem_loc)
# Remove from original
for rloc in tgroup:
all_locs.remove(rloc)
print >> sys.stderr, "After overlap removal:"
print >> sys.stderr, '\n'.join('%s%d' % (cat.ljust(20, ' '), count)
for cat, count in Counter(
c.category()
for c in all_locs).most_common())
print >> sys.stderr, '%s%d' % ('Rejected'.ljust(20, ' '), len(reject))
if args.igv_preview and len(overlap_groups) > 0: os.remove('tmp.gtf')
### Sort loci ########################################################################
bychrom = defaultdict(list)
for loc in all_locs:
bychrom[loc.chrom()].append(loc)
final_locs = []
for chrom in utils.CHROMNAMES:
if chrom in bychrom:
for loc in sorted(bychrom[chrom], key=lambda x: x.span()[0]):
final_locs.append(loc)
for i, loc in enumerate(final_locs):
loc.id = '%s_%04d' % (args.prefix, i + 1)
### Rename loci according to cytoband #################################################
# Create GTF with all_locs
with open('tmp.gtf', 'w') as outh:
for g in utils.sort_gtf(loc.span_gtf() for loc in final_locs):
print >> outh, '\t'.join(g)
p1 = Popen(
'bedtools intersect -wo -a tmp.gtf -b ../other_sources/cytoband.gtf',
shell=True,
stdout=PIPE,
stderr=PIPE)
out, err = p1.communicate()
os.remove('tmp.gtf')
byband = defaultdict(list)
for ll in out.strip('\n').split('\n'):
f = ll.split('\t')
g1 = GTFLine(f[:9])
g2 = GTFLine(f[9:-1])
band = '%s%s' % (g2.chrom.strip('chr'), g2.attr['gene_id'])
byband[band].append(g1)
namemap = {}
for band, glist in byband.iteritems():
if len(glist) == 1:
namemap[glist[0].attr['name']] = '%s_%s' % (args.prefix, band)
else:
glist.sort(key=lambda x: x.start)
for i, gl in enumerate(glist):
namemap[gl.attr['name']] = '%s_%s%s' % (args.prefix, band,
someletters[i])
for loc in final_locs:
loc.locus_name = namemap[loc.id]
### Create annotation files ##########################################################
print >> sys.stderr, "Writing annotation files"
with open('%s.gtf' % args.prefix, 'w') as outh:
liter = utils.sort_gtf(
chain.from_iterable(loc.each_gtf() for loc in final_locs))
print >> outh, '\n'.join('\t'.join(_) for _ in liter)
# for loc in final_locs:
# print >>outh, '\n'.join('\t'.join(g) for g in loc.each_gtf())
with open('%s_reject.gtf' % args.prefix, 'w') as outh:
liter = utils.sort_gtf(
chain.from_iterable(loc.each_gtf() for loc in reject))
print >> outh, '\n'.join('\t'.join(_) for _ in liter)
# for loc in reject:
# print >>outh, '\n'.join('\t'.join(g) for g in loc.each_gtf())
with open('%s_span.gtf' % args.prefix, 'w') as outh:
for g in utils.sort_gtf(loc.span_gtf() for loc in final_locs):
print >> outh, '\t'.join(g)
with open('%s_table.txt' % args.prefix, 'w') as outh:
print >> outh, '\t'.join([
'locus_name', 'id', 'strand', 'chrom', 'start', 'end', 'strand',
'nfeats', 'width', 'model_cov', 'ltr5_model', 'int_model',
'ltr3_model'
])
for loc in final_locs:
mgtf = GTFLine(loc.span_gtf())
row = [
loc.locus_name,
loc.id,
loc.category(),
mgtf.chrom,
mgtf.start,
mgtf.end,
mgtf.strand,
mgtf.attr['nfeats'],
loc.width(),
loc.model_cov(),
loc.ltr_up_name(),
loc.internal_name(),
loc.ltr_down_name(),
]
print >> outh, '\t'.join(str(_) for _ in row)
### Extract sequences ################################################################
if args.get_sequences:
print >> sys.stderr, "Extracting sequences"
genome_fasta = args.genome_fasta # '/Users/bendall/Projects/References/Homo_sapiens/UCSC/hg19/Sequence/WholeGenomeFasta/genome.fa'
genome = dict((s.id, s) for s in SeqIO.parse(genome_fasta, 'fasta'))
with open('%s.full.fasta' % args.prefix, 'w') as outh:
for loc in final_locs:
gcoord = '%s:%d-%d(%s)' % (loc.chrom(), loc.span()[0],
loc.span()[1], loc.strand())
print >> outh, '>%s|%s|%s' % (loc.locus_name, loc.category(),
gcoord)
print >> outh, str(loc.entire_sequence(genome).seq)
with open('%s.internal.fasta' % args.prefix, 'w') as outh:
for loc in final_locs:
gcoord = '%s:%d-%d(%s)' % (
loc.chrom(), min(p.start for p in loc.internal),
max(p.end for p in loc.internal), loc.strand())
print >> outh, '>%s_int|%s|%s|%s' % (loc.locus_name,
loc.category(), gcoord,
loc.format_print_clust())
print >> outh, str(loc.internal_sequence(genome).seq)
with open('%s.5ltr.fasta' % args.prefix, 'w') as outh:
for loc in final_locs:
ltrseq = loc.ltr_up_sequence(genome)
if ltrseq:
gcoord = '%s:%d-%d(%s)' % (
loc.chrom(), min(p.start for p in loc.ltr_up),
max(p.end for p in loc.ltr_up), loc.strand())
print >> outh, '>%s_5LTR|%s|%s' % (
loc.locus_name, loc.ltr_up_name(), gcoord)
print >> outh, str(ltrseq.seq)
with open('%s.3ltr.fasta' % args.prefix, 'w') as outh:
for loc in final_locs:
ltrseq = loc.ltr_down_sequence(genome)
if ltrseq:
gcoord = '%s:%d-%d(%s)' % (
loc.chrom(), min(p.start for p in loc.ltr_down),
max(p.end for p in loc.ltr_down), loc.strand())
print >> outh, '>%s_3LTR|%s|%s' % (
loc.locus_name, loc.ltr_down_name(), gcoord)
print >> outh, str(ltrseq.seq)
### IGV snapshots ####################################################################
if args.igv_snapshot:
print >> sys.stderr, "Taking IGV snapshots"
igv = IGV()
igv.new()
igv.genome('hg19')
igv.load(
os.path.join(os.getcwd(), '../other_sources/rmsk_LTR.hg19.gtf'))
if os.path.isdir('tmp'):
for compare_gtf in glob('tmp/*.gtf'):
igv.load(os.path.join(os.getcwd(), compare_gtf))
igv.load(os.path.join(os.getcwd(), '%s.gtf' % args.prefix))
igv.load(os.path.join(os.getcwd(), '%s_reject.gtf' % args.prefix))
do_snapshots = True
if do_snapshots:
if not os.path.exists(os.path.join(os.getcwd(), 'snapshots')):
os.mkdir(os.path.join(os.getcwd(), 'snapshots'))
if not os.path.exists(os.path.join(os.getcwd(), 'reject')):
os.mkdir(os.path.join(os.getcwd(), 'reject'))
categories = ['prototype', 'oneside', 'internal']
for cat in categories:
if not os.path.exists(
os.path.join(os.getcwd(), 'snapshots/%s' % cat)):
os.mkdir(os.path.join(os.getcwd(), 'snapshots/%s' % cat))
if not os.path.exists(
os.path.join(os.getcwd(), 'reject/%s' % cat)):
os.mkdir(os.path.join(os.getcwd(), 'reject/%s' % cat))
for loc in final_locs:
rc, lc = loc.span()
locus_str = '%s:%d-%d' % (loc.chrom(), rc - 5000, lc + 5000)
print >> sys.stderr, '%s\t%s\t%s' % (loc.locus_name,
loc.category(), locus_str)
igv.goto(locus_str)
igv.expand()
if do_snapshots:
igv.snapshotDirectory(
os.path.join(os.getcwd(),
'snapshots/%s' % loc.category().strip('*')))
igv.snapshot(filename='%s.png' % loc.locus_name)
for loc in reject:
rc, lc = loc.span()
locus_str = '%s:%d-%d' % (loc.chrom(), rc - 5000, lc + 5000)
print >> sys.stderr, '%s\t%s\t%s' % (loc.id, loc.category(),
locus_str)
igv.goto(locus_str)
igv.expand()
if do_snapshots:
igv.snapshotDirectory(
os.path.join(os.getcwd(),
'reject/%s' % loc.category().strip('*')))
igv.snapshot(filename='%s.png' % loc.id)
def main(parser):
args = parser.parse_args()
lines = utils.tab_line_gen(args.infile)
bystrand = {"+": [], "-": []}
for l in lines:
bystrand[l[6]].append(l)
bystrand["+"] = list(utils.sort_gtf(bystrand["+"]))
bystrand["-"] = list(utils.sort_gtf(bystrand["-"]))
grouped = {"+": [], "-": []}
for strand in ["+", "-"]:
score = None
chrom = None
tmp = []
for l in bystrand[strand]:
if score is not None:
if l[5] != score or l[0] != chrom:
grouped[strand].append(tmp)
tmp = []
tmp.append(l)
score = l[5]
chrom = l[0]
gaplens = []
merged = []
for g in grouped["+"] + grouped["-"]:
if len(g) == 1:
merged.append(g[0])
else:
mygaps = []
s = ""
for i in range(len(g) - 1):
gaplen = int(g[i + 1][3]) - int(g[i][4])
s += "%s:%s-%s(%s)" % (g[i][0], g[i][3], g[i][4], g[i][6])
s += " --- %d --- " % gaplen
mygaps.append(gaplen)
s += "%s:%s-%s(%s)" % (g[-1][0], g[-1][3], g[-1][4], g[-1][6])
if any(g >= QUESTIONABLE for g in mygaps):
continue
else:
gaplens.extend(mygaps)
print >>sys.stderr, s
# spos = min(int(l[3]) for l in g)
# epos = max(int(l[4]) for l in g)
# attrs = [dict(re.findall('(\S+)\s+"([\s\S]+?)";',l[8])) for l in g]
# newline = [g[0][0], 'joined', 'exon', str(spos), str(epos), g[0][5], g[0][6], '.']
# newattr = {'joined': ','.join(a['id'] for a in attrs),
# 'repType': attrs[0]['repType'],
# }
# newline.append(' '.join('%s "%s";' % (k,v) for k,v in newattr.iteritems()))
# merged.append(newline)
if gaplens:
print >>sys.stderr, "min gap length: %d" % min(gaplens)
print >>sys.stderr, "mean gap length: %d" % (float(sum(gaplens)) / len(gaplens))
print >>sys.stderr, "median gap length: %d" % sorted(gaplens)[len(gaplens) / 2]
print >>sys.stderr, "max gap length: %d" % max(gaplens)
else:
print >>sys.stderr, "No gaps found"
print >>args.outfile, "%d" % max(gaplens)
def main(parser):
args = parser.parse_args()
lines = utils.tab_line_gen(args.infile)
for l in utils.sort_gtf(lines):
print >>args.outfile, '\t'.join(l)
def main(args):
### Read the GTF file ################################################################
print >>sys.stderr, 'Loading GTF: %s' % args.internal_file
gtf = [GTFLine(l) for l in utils.tab_line_gen(open(args.internal_file,'rU'))]
### Get model lengths
# mlen = calculate_model_lengths(gtf)
# print mlen
mlen = calculate_model_lengths2(gtf)
print >>sys.stderr, 'Model lengths: %s' % mlen
### Correct the model coordinates ####################################################
correct_model_coordinates(gtf,mlen)
for g in gtf:
if g.strand == '+':
trueend = mlen[g.attr['repName']] + g.attr['repLeft']
else:
trueend = mlen[g.attr['repName']] + g.attr['repStart']
assert trueend == g.attr['repEnd']
### Organize hits by chromosome ######################################################
bychrom = defaultdict(list)
for g in gtf:
bychrom[g.chrom].append(g)
### List of HERV loci ################################################################
print >>sys.stderr, 'Assembling HERV loci'
all_locs = []
### Create HERV loci for plus strand #################################################
for chrom in utils.CHROMNAMES:
if chrom in bychrom:
plus = [h for h in bychrom[chrom] if h.strand == '+']
if not plus: continue
plus.sort(key=lambda x: x.start)
cur = HERVLocus(id='%s_%04d' % (args.prefix, len(all_locs)+1))
cur.internal.append(plus[0])
for p1 in plus[1:]:
p0 = cur.internal[-1]
# Genomic distance between hits
gdist = p1.start - p0.end
# Determine whether p1 is in sequence with locus
if gdist <= 10: ## Overlapping (or nearly) in genome
insequence = True
else:
## Hits are in sequence and genomic distance is not extreme
insequence = p0.attr['repLeft'] < p1.attr['repLeft']
insequence &= gdist < args.longdist
if insequence:
cur.internal.append(p1)
else:
all_locs.append(cur)
cur = HERVLocus(id='%s_%04d' % (args.prefix, len(all_locs)+1))
cur.internal.append(p1)
all_locs.append(cur)
### Create HERV loci for minus strand ################################################
for chrom in utils.CHROMNAMES:
if chrom in bychrom:
minus = [h for h in bychrom[chrom] if h.strand == '-']
if not minus: continue
minus.sort(key=lambda x: x.end, reverse=True) # Sort in reverse order
cur = HERVLocus(id='%s_%04d' % (args.prefix, len(all_locs)+1))
cur.internal.append(minus[0])
for p1 in minus[1:]:
p0 = cur.internal[-1]
# Genomic distance between hits
gdist = p0.start - p1.end
# Determine whether p1 is in sequence with locus
if gdist <= 10: ## Overlapping (or nearly) in genome
insequence = True
else:
## Hits are in sequence and genomic distance is not extreme
insequence = p0.attr['repStart'] < p1.attr['repStart']
insequence &= gdist < args.longdist
if insequence:
cur.internal.append(p1)
else:
all_locs.append(cur)
cur = HERVLocus(id='%s_%04d' % (args.prefix, len(all_locs)+1))
cur.internal.append(p1)
all_locs.append(cur)
### Add LTRs to HERV loci ############################################################
print >>sys.stderr, 'Finding flanking LTRs'
for loc in all_locs:
loc.find_ltr(args.ltr_files, args.flank)
loc.adjust_overlaps()
print >>sys.stderr, "Initial counts:"
print >>sys.stderr, '\n'.join('%s%d' % (cat.ljust(20,' '),count) for cat,count in Counter(c.category() for c in all_locs).most_common())
### Filtering ########################################################################
reject = set()
if args.minpct > 0 or args.mincov > 0:
print >>sys.stderr, "Removing loci with less than %d percent or %dbp model coverage" % (int(args.minpct*100), args.mincov)
for loc in all_locs:
if loc.model_cov() < (mlen[loc.internal_name()] * args.minpct) or loc.model_cov() < args.mincov:
print >>sys.stderr, '%s\t%d\t%s' % (loc.id, loc.model_cov(), loc.category())
reject.add(loc)
for rloc in reject:
all_locs.remove(rloc)
print >>sys.stderr, "After filtering:"
print >>sys.stderr, '\n'.join('%s%d' % (cat.ljust(20,' '),count) for cat,count in Counter(c.category() for c in all_locs).most_common())
print >>sys.stderr, '%s%d' % ('Rejected'.ljust(20,' '), len(reject))
### Deal with overlapping loci #######################################################
# Create GTF with all_locs
with open('tmp.gtf','w') as outh:
for g in utils.sort_gtf(loc.span_gtf() for loc in all_locs):
print >>outh, '\t'.join(g)
# Cluster overlapping and bookended using bedtools
p1 = Popen('bedtools cluster -i tmp.gtf', shell=True, stdout=PIPE, stderr=PIPE)
out,err = p1.communicate()
os.remove('tmp.gtf')
# Parse bedtools output
overlap_groups = defaultdict(list)
for ll in out.strip('\n').split('\n'):
f = ll.split('\t')
overlap_groups[f[-1]].append(GTFLine(f[:9]))
# Remove clusters with one
for k in overlap_groups.keys():
if len(overlap_groups[k]) == 1:
del overlap_groups[k]
print >>sys.stderr, "%d overlap groups" % len(overlap_groups)
if args.igv_preview and len(overlap_groups)>0:
print >>sys.stderr, "Loading IGV"
# Create file for IGV viewing
with open('tmp.gtf','w') as outh:
liter = utils.sort_gtf(chain.from_iterable(loc.each_gtf() for loc in all_locs))
print >>outh, '\n'.join('\t'.join(_) for _ in liter)
igv = IGV()
igv.new()
igv.genome('hg19')
igv.load(os.path.join(os.getcwd(),'../other_sources/rmsk_LTR.hg19.gtf'))
igv.load(os.path.join(os.getcwd(),'tmp.gtf'))
tandem = []
for k in sorted(overlap_groups.keys(), key=lambda x:int(x)):
ogroup = overlap_groups[k]
if args.igv_preview:
locus_str = '%s:%s-%s' % (ogroup[0].chrom, min(gl.start for gl in ogroup)-5000, max(gl.end for gl in ogroup)+5000)
igv.goto(locus_str)
igv.expand()
# Get locus for each member of overlap group
og_locus = {}
for o in ogroup:
tmp = [c for c in all_locs if c.id == o.attr['name']]
assert len(tmp)==1
og_locus[o.attr['name']] = tmp[0]
# Print out the model coverage
for n,loc in og_locus.iteritems():
print >>sys.stderr, '%s\t%d\t%s' % (n, loc.model_cov(), loc.category())
# Parse user input
z = raw_input('Action to take: ').strip()
if z == '': continue
inputcmd = z.strip().split(' ')
if inputcmd[0] == 'REJECT':
if len(inputcmd) == 1:
# Only max will be kept
st = sorted([loc for n,loc in og_locus.iteritems()], key=lambda x:x.model_cov(), reverse=True)[1:]
loc_ids = [_.id for _ in st]
elif len(inputcmd) == 2:
loc_ids = inputcmd[1].split(',')
else:
assert False
for loc_id in loc_ids:
reject.add(og_locus[loc_id])
elif inputcmd[0] == 'TANDEM':
if len(inputcmd) == 1:
assert len(og_locus)==2, 'More than 2 loci are present'
tandem.append([loc for n,loc in og_locus.iteritems()])
elif len(inputcmd) == 2:
loc_ids = inputcmd[1].split('+')
tandem.append([og_locus[loc_id] for loc_id in loc_ids])
else:
assert False
elif inputcmd[0] == 'DIFF':
n1,n2 = inputcmd[1].split('-')
g1 = og_locus[n1]
g2 = og_locus[n2]
if g1.span()[0] < g2.span()[1]:
g1.shorten(g2.span()[1]+20, g1.span()[1])
elif g1.span()[1] < g2.span()[0]:
g1.shorten(g1.span()[0], g2.span()[0]-20)
else:
print "no overlap!"
print g1
elif inputcmd[0] == 'IGNORE':
continue
else:
assert False, 'Unknown command: "%s"' % inputcmd[0]
# Remove rejected annotations
for rloc in reject:
if rloc in all_locs:
all_locs.remove(rloc)
# Create the tandem annotations
for tgroup in tandem:
tandem_loc = HERVLocus(id=tgroup[0].id)
tandem_loc.internal = list(chain.from_iterable(loc.internal for loc in tgroup))
if tandem_loc.strand() == '+':
tandem_loc.internal.sort(key=lambda x:x.start)
else:
tandem_loc.internal.sort(key=lambda x:x.end, reverse=True)
tandem_loc.find_ltr(args.ltr_files, 1000)
tandem_loc.adjust_overlaps()
tandem_loc.is_tandem = True
all_locs.append(tandem_loc)
# Remove from original
for rloc in tgroup:
all_locs.remove(rloc)
print >>sys.stderr, "After overlap removal:"
print >>sys.stderr, '\n'.join('%s%d' % (cat.ljust(20,' '),count) for cat,count in Counter(c.category() for c in all_locs).most_common())
print >>sys.stderr, '%s%d' % ('Rejected'.ljust(20,' '), len(reject))
if args.igv_preview and len(overlap_groups)>0: os.remove('tmp.gtf')
### Sort loci ########################################################################
bychrom = defaultdict(list)
for loc in all_locs:
bychrom[loc.chrom()].append(loc)
final_locs = []
for chrom in utils.CHROMNAMES:
if chrom in bychrom:
for loc in sorted(bychrom[chrom], key=lambda x:x.span()[0]):
final_locs.append(loc)
for i,loc in enumerate(final_locs):
loc.id = '%s_%04d' % (args.prefix, i+1)
### Rename loci according to cytoband #################################################
# Create GTF with all_locs
with open('tmp.gtf','w') as outh:
for g in utils.sort_gtf(loc.span_gtf() for loc in final_locs):
print >>outh, '\t'.join(g)
p1 = Popen('bedtools intersect -wo -a tmp.gtf -b ../other_sources/cytoband.gtf', shell=True, stdout=PIPE, stderr=PIPE)
out,err = p1.communicate()
os.remove('tmp.gtf')
byband = defaultdict(list)
for ll in out.strip('\n').split('\n'):
f = ll.split('\t')
g1 = GTFLine(f[:9])
g2 = GTFLine(f[9:-1])
band = '%s%s' % (g2.chrom.strip('chr'),g2.attr['gene_id'])
byband[band].append(g1)
namemap = {}
for band,glist in byband.iteritems():
if len(glist) == 1:
namemap[glist[0].attr['name']] = '%s_%s' % (args.prefix, band)
else:
glist.sort(key=lambda x:x.start)
for i,gl in enumerate(glist):
namemap[gl.attr['name']] = '%s_%s%s' % (args.prefix, band, someletters[i])
for loc in final_locs:
loc.locus_name = namemap[loc.id]
### Create annotation files ##########################################################
print >>sys.stderr, "Writing annotation files"
with open('%s.gtf' % args.prefix,'w') as outh:
liter = utils.sort_gtf(chain.from_iterable(loc.each_gtf() for loc in final_locs))
print >>outh, '\n'.join('\t'.join(_) for _ in liter)
# for loc in final_locs:
# print >>outh, '\n'.join('\t'.join(g) for g in loc.each_gtf())
with open('%s_reject.gtf' % args.prefix,'w') as outh:
liter = utils.sort_gtf(chain.from_iterable(loc.each_gtf() for loc in reject))
print >>outh, '\n'.join('\t'.join(_) for _ in liter)
# for loc in reject:
# print >>outh, '\n'.join('\t'.join(g) for g in loc.each_gtf())
with open('%s_span.gtf' % args.prefix,'w') as outh:
for g in utils.sort_gtf(loc.span_gtf() for loc in final_locs):
print >>outh, '\t'.join(g)
with open('%s_table.txt' % args.prefix,'w') as outh:
print >>outh, '\t'.join(['locus_name','id','strand','chrom','start','end','strand','nfeats','width','model_cov','ltr5_model','int_model','ltr3_model'])
for loc in final_locs:
mgtf = GTFLine(loc.span_gtf())
row = [loc.locus_name, loc.id, loc.category(),
mgtf.chrom, mgtf.start, mgtf.end, mgtf.strand,
mgtf.attr['nfeats'], loc.width(), loc.model_cov(),
loc.ltr_up_name(), loc.internal_name(), loc.ltr_down_name(),
]
print >>outh, '\t'.join(str(_) for _ in row)
### Extract sequences ################################################################
if args.get_sequences:
print >>sys.stderr, "Extracting sequences"
genome_fasta = args.genome_fasta # '/Users/bendall/Projects/References/Homo_sapiens/UCSC/hg19/Sequence/WholeGenomeFasta/genome.fa'
genome = dict((s.id,s) for s in SeqIO.parse(genome_fasta,'fasta'))
with open('%s.full.fasta' % args.prefix,'w') as outh:
for loc in final_locs:
gcoord = '%s:%d-%d(%s)' % (loc.chrom(), loc.span()[0], loc.span()[1], loc.strand())
print >>outh, '>%s|%s|%s' % (loc.locus_name, loc.category(), gcoord)
print >>outh, str(loc.entire_sequence(genome).seq)
with open('%s.internal.fasta' % args.prefix,'w') as outh:
for loc in final_locs:
gcoord = '%s:%d-%d(%s)' % (loc.chrom(), min(p.start for p in loc.internal), max(p.end for p in loc.internal), loc.strand())
print >>outh, '>%s_int|%s|%s|%s' % (loc.locus_name, loc.category(), gcoord, loc.format_print_clust())
print >>outh, str(loc.internal_sequence(genome).seq)
with open('%s.5ltr.fasta' % args.prefix,'w') as outh:
for loc in final_locs:
ltrseq = loc.ltr_up_sequence(genome)
if ltrseq:
gcoord = '%s:%d-%d(%s)' % (loc.chrom(), min(p.start for p in loc.ltr_up), max(p.end for p in loc.ltr_up), loc.strand())
print >>outh, '>%s_5LTR|%s|%s' % (loc.locus_name, loc.ltr_up_name(), gcoord)
print >>outh, str(ltrseq.seq)
with open('%s.3ltr.fasta' % args.prefix,'w') as outh:
for loc in final_locs:
ltrseq = loc.ltr_down_sequence(genome)
if ltrseq:
gcoord = '%s:%d-%d(%s)' % (loc.chrom(), min(p.start for p in loc.ltr_down), max(p.end for p in loc.ltr_down), loc.strand())
print >>outh, '>%s_3LTR|%s|%s' % (loc.locus_name, loc.ltr_down_name(), gcoord)
print >>outh, str(ltrseq.seq)
### IGV snapshots ####################################################################
if args.igv_snapshot:
print >>sys.stderr, "Taking IGV snapshots"
igv = IGV()
igv.new()
igv.genome('hg19')
igv.load(os.path.join(os.getcwd(),'../other_sources/rmsk_LTR.hg19.gtf'))
if os.path.isdir('tmp'):
for compare_gtf in glob('tmp/*.gtf'):
igv.load(os.path.join(os.getcwd(), compare_gtf))
igv.load(os.path.join(os.getcwd(),'%s.gtf' % args.prefix))
igv.load(os.path.join(os.getcwd(),'%s_reject.gtf' % args.prefix))
do_snapshots = True
if do_snapshots:
if not os.path.exists(os.path.join(os.getcwd(),'snapshots')):
os.mkdir(os.path.join(os.getcwd(),'snapshots'))
if not os.path.exists(os.path.join(os.getcwd(),'reject')):
os.mkdir(os.path.join(os.getcwd(),'reject'))
categories = ['prototype', 'oneside', 'internal']
for cat in categories:
if not os.path.exists(os.path.join(os.getcwd(),'snapshots/%s' % cat)):
os.mkdir(os.path.join(os.getcwd(),'snapshots/%s' % cat))
if not os.path.exists(os.path.join(os.getcwd(),'reject/%s' % cat)):
os.mkdir(os.path.join(os.getcwd(),'reject/%s' % cat))
for loc in final_locs:
rc,lc = loc.span()
locus_str = '%s:%d-%d' % (loc.chrom(), rc-5000, lc+5000)
print >>sys.stderr, '%s\t%s\t%s' % (loc.locus_name, loc.category(), locus_str)
igv.goto(locus_str)
igv.expand()
if do_snapshots:
igv.snapshotDirectory(os.path.join(os.getcwd(),'snapshots/%s' % loc.category().strip('*') ))
igv.snapshot(filename='%s.png' % loc.locus_name)
for loc in reject:
rc,lc = loc.span()
locus_str = '%s:%d-%d' % (loc.chrom(), rc-5000, lc+5000)
print >>sys.stderr, '%s\t%s\t%s' % (loc.id, loc.category(), locus_str)
igv.goto(locus_str)
igv.expand()
if do_snapshots:
igv.snapshotDirectory(os.path.join(os.getcwd(),'reject/%s' % loc.category().strip('*') ))
igv.snapshot(filename='%s.png' % loc.id)
def main(parser):
args = parser.parse_args()
lines = utils.tab_line_gen(args.infile)
bystrand = {'+': [], '-': []}
for l in lines:
bystrand[l[6]].append(l)
bystrand['+'] = list(utils.sort_gtf(bystrand['+']))
bystrand['-'] = list(utils.sort_gtf(bystrand['-']))
grouped = {'+': [], '-': []}
for strand in ['+', '-']:
score = None
chrom = None
tmp = []
for l in bystrand[strand]:
if score is not None:
if l[5] != score or l[0] != chrom:
grouped[strand].append(tmp)
tmp = []
tmp.append(l)
score = l[5]
chrom = l[0]
gaplens = []
merged = []
for g in grouped['+'] + grouped['-']:
if len(g) == 1:
merged.append(g[0])
else:
mygaps = []
s = ''
for i in range(len(g) - 1):
gaplen = int(g[i + 1][3]) - int(g[i][4])
s += '%s:%s-%s(%s)' % (g[i][0], g[i][3], g[i][4], g[i][6])
s += ' --- %d --- ' % gaplen
mygaps.append(gaplen)
s += '%s:%s-%s(%s)' % (g[-1][0], g[-1][3], g[-1][4], g[-1][6])
if any(g >= QUESTIONABLE for g in mygaps):
continue
else:
gaplens.extend(mygaps)
print >> sys.stderr, s
# spos = min(int(l[3]) for l in g)
# epos = max(int(l[4]) for l in g)
# attrs = [dict(re.findall('(\S+)\s+"([\s\S]+?)";',l[8])) for l in g]
# newline = [g[0][0], 'joined', 'exon', str(spos), str(epos), g[0][5], g[0][6], '.']
# newattr = {'joined': ','.join(a['id'] for a in attrs),
# 'repType': attrs[0]['repType'],
# }
# newline.append(' '.join('%s "%s";' % (k,v) for k,v in newattr.iteritems()))
# merged.append(newline)
if gaplens:
print >> sys.stderr, 'min gap length: %d' % min(gaplens)
print >> sys.stderr, 'mean gap length: %d' % (float(sum(gaplens)) /
len(gaplens))
print >> sys.stderr, 'median gap length: %d' % sorted(gaplens)[
len(gaplens) / 2]
print >> sys.stderr, 'max gap length: %d' % max(gaplens)
else:
print >> sys.stderr, 'No gaps found'
print >> args.outfile, '%d' % max(gaplens)
