def localHHBLITS(seq = "NWLGVKRQPLWTLVLILWPVIIFIILAITRTKFPP", database = "../data/PP2db", minEVal = 1):
import time
out.writeDebug("Do a local hhblits search for {} in {}".format( seq, database ) )
char_set = string.ascii_uppercase + string.digits
time_stamp = str(int(time.time())) + ''.join(random.sample(char_set*6, 40)) + str(random.randint(0, 100000000))
seq_file = ''
seq = str(seq)
if re.match('^[A-Z]*$',seq):
seq_file = 'hhblits_input_'+time_stamp
fh = open(seq_file,'w')
fh.write('>no_header\n'+seq)
fh.close()
else:
seq_file = seq
outfile = 'hhblits_'+time_stamp+'.out'
command = "hhblits -i {} -o {} -d {} -e {} -n 1".format(seq_file, outfile, database, minEVal)
try:
hhblitsResults = subprocess.check_output(command, stderr=subprocess.STDOUT, shell = True)
hhblitsResults = open(outfile).read()
os.remove(outfile)
except subprocess.CalledProcessError as err:
out.writeLog("Return code for hhblits search {} in {} returned with exit code {}!".format( seq, database, err.returncode ) )
hhblitsResults = ''
if seq != seq_file:
os.remove(seq_file)
return HHBLITS(hhblitsResults)
def getHpoTermById(self, id, log = True):
""" returns an hpo term by an hpo id """
try:
return self.hpoTermsDict[id.split(" ")[0]]
except KeyError:
if log:
out.writeLog( "KeyError getting term for id: \"" + str( id ) + "\"! => returning None!" )
return None
def localBlast(seq="NWLGVKRQPLWTLVLILWPVIIFIILAITRTKFPP", database="../data/genes_UniProt.fasta", minEVal=1):
out.writeDebug("Do a local blast search for {} in {}".format(seq, database))
blastResults = commands.getstatusoutput(
'echo "{}" | blast2 -p blastp -d {} -N -e {} -m 7'.format(seq, database, minEVal)
)
if blastResults[0] != 0:
out.writeLog(
"Return code for blast search {} in {} returned with exit code {}!".format(
seq, database, blastResults[0]
)
)
return Blast(blastResults[1])
def predictSequence(args, hpoGraph, uni2hpoDict, name="Sequence", seq=""):
# ok, do the whole thing
try:
# debug msg
out.writeLog('Predict function for protein: id: "' + str(name) + '" sequence: "' + str(seq) + '"')
# lookup resulst if available
foundInLookUp, hits = False, []
if args.lookupdb:
out.writeLog("Checking for precalculated results!")
# ok, load them
f = open(args.lookupdb, "r")
for line in f:
if line.strip() == name.strip():
# oh, cool, its precalculated
foundInLookUp = True
elif foundInLookUp and line.startswith("\t"):
# ok, this belongs to result, load it
m = re.search("\t([^\t]*)\t([^\t]*)\t([^\t]*)\t([^\t]*)\t([^\t]*)\t([^\t]*)", line)
hits.append(
{
"method": m.group(1),
"hit_id": m.group(2),
"hit_value": float(m.group(3)),
"hit_from": int(m.group(4)),
"hit_to": int(m.group(5)),
"hit_order": bool(m.group(6)),
}
)
elif foundInLookUp:
break
f.close()
# ok, first of all, get similar sequences!
if not foundInLookUp:
out.writeLog("Check blast and hhblits for sequence orthologs!")
blastResults = blast.Blast.localBlast(seq=seq, database=args.blastDbFile, minEVal=args.blastMinEVal)
for hit in blastResults.hits:
out.writeDebug("Blast: found hit: " + str(hit))
hhblitsResults = hhblits.HHBLITS.localHHBLITS(seq=str(seq), database=args.hhblitsDbFile)
for hit in hhblitsResults.hits:
out.writeDebug("hhblits: found hit: " + str(hit))
hits.extend(blastResults.hits)
hits.extend(hhblitsResults.hits)
# reduce hits if fast prediction
if args.fast:
out.writeLog("Reduce hits for faster prediction!")
hitsTmp = sorted(hits, key=lambda t: t["hit_value"])
hits = hitsTmp[:6]
# now get the hpo-Identifiers for each similar sequence
out.writeLog("uniprot ids ({}) 2 HPO Terms".format(len(hits)))
for hit in hits:
try:
# Do not output this, it might be some GB output
# out.writeDebug("found hpoTerms for " + str( hit[ "hit_id" ] ) + ": " + str( uni2hpoDict[ hit[ "hit_id" ] ] ) )
hit.update({"hpoTerms": uni2hpoDict[hit["hit_id"]]})
except KeyError:
out.writeWarning("MISSING HPO TERMS FOR HIT: " + str(hit))
# build and merge trees
out.writeLog("Build and merge tree for similar sequences!")
graph, hit_id = hpoGraph.getHpoSubGraph(hpoGraph.getRoot()), 0
for hit in hits:
# out.writeDebug("@blast merging: {}".format(hit))
subtree = hpoGraph.getHpoSubGraph(hit["hpoTerms"], {hit_id: hit})
hit_id += 1
graph += subtree
# do the prediciton
out.writeLog("Run main prediction!")
# init the predictor
p = predictor.Predictor(args.neuronalNet)
p.runprediction(seq, graph)
# always accept the root
for root in hpoGraph.getRoot():
graph.getHpoTermById(root).accepted = 1
# do the output
out.writeLog("writing output")
for node in graph.getAcceptedNodes(args.minimalConfidence):
out.writeOutput("{}\t{}\t{}".format(name, node.id, "%.*f" % (2, (node.accepted + 2) / 4)))
# svg image desired?
if args.createSvgImage:
out.writeLog("Create a svg image showing all results!")
if graph != None:
graph.writeSvgImage(fileName=str(name) + ".svg")
else:
out.writeWarning("Can't create a svg image from an empty tree!")
# clear attrs from all tree nodes, so that these don't interfere with later predictions
# out.writeLog("Clear memory for next prediction")
# hpoGraph.clearAttr()
except Exception as err:
exc_type, exc_obj, exc_tb = sys.exc_info()
out.writeError("Predicting Error: " + str(err) + " on line: " + str(exc_tb.tb_lineno))
exit(1)
pass
help="The minimal confidance value an accepted node should have; [from -2 to 2] (default: 0.0)!",
)
parser.add_argument("--fast", action="store_true", dest="fast", help="Weather to perform a fast prediction!")
args = parser.parse_args()
# init output format
out.supressMessage = bool(args.verbosity >> 0 & 1)
out.supressDebug = bool(args.verbosity >> 1 & 1)
out.supressLog = bool(args.verbosity >> 2 & 1)
out.supressWarning = bool(args.verbosity >> 3 & 1)
out.supressError = bool(args.verbosity >> 4 & 1)
out.supressOutput = bool(args.verbosity >> 5 & 1)
out.outputFormat = args.outputFormat
# init the hpoParser
out.writeLog("Build hpoGraph from file")
hpoGraph = None
if os.path.isfile(args.hpoFile):
hpoGraph = hpoParser.HpoGraph(hpoFile=args.hpoFile)
else:
out.writeLog("missing hpoFile! Try standard hpoFile in the data directory")
hpoGraph = hpoParser.HpoGraph()
# init the hpo-identifier dict
out.writeLog("Build uniprot 2 hpo dictionary")
uni2hpoDict = {}
f = open(args.uni2hpo, "r")
for line in f:
line = line.strip()
uni2hpoDict.update({line.split("\t")[0]: line.split("\t")[1].split(",")})
f.close()
