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parse_exonerate.py
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parse_exonerate.py
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from parse_gff2 import parse_gff2
import re
from itertools import izip
START_GFF = "# --- START OF GFF DUMP ---"
END_GFF = "# --- END OF GFF DUMP ---"
C4_ALIGNMENT = 'C4 Alignment:'
class exonerate_file(file):
def xreadlines(self):
in_gff = False
for l in file.xreadlines(self):
if in_gff:
yield l
if l.startswith(START_GFF):
in_gff = True
elif l.startswith(END_GFF):
in_gff = False
def parse_exonerate(filename):
return parse_gff2(exonerate_file(filename))
c4 = (" Query: gi|327271245|ref|XP_003220398.1| PREDICTED:"
+ " uncharacterized protein C6orf130-like isoform 1 [Anolis"
+ " carolinensis] >gi|327271247|ref|XP_003220399.1| PREDICTED:"
+ " uncharacterized protein C6orf130-like isoform 2 [Anolis"
+ """ carolinensis]
Target: Gi_4536_gatcag5825_mbl1599_2MIRA_mapping Average"""
+ """ coverage: 73,89:[revcomp]
Model: protein2dna:bestfit
Raw score: 328
Query range: 0 -> 150
Target range: 1849 -> 1396
1 : MetAlaSerIleAsnProGluLysGluGluArgIleValTyrArgGlnGlyAspLeuPheTh : 21
:!::!!|||! !!.. !! :!!:!! ! !.!!..! ! ||||||||||||||||||||
LeuSerSerThrThrSerIleGluLysPheThrPheThrGluArgGlnGlyAspLeuPheTh
1849 : TTATCATCGACAACATCAATTGAAAAATTTACTTTTACAGAACGACAAGGAGACTTATTCAC : 1789
22 : r<->CysProGluThrAspAlaLeuAlaHisCysIleSerGluAspCysHisMetSerAlaG : 41
| ...||| !|||||||||||||||||||||:!!|||:!!||| !...|||.!! !|
rAspAlaProProThrAspAlaLeuAlaHisCysValSerGlnAspLeuArgMetGlyLysG
1788 : TGATGCACCACCAACTGACGCGTTAGCTCATTGCGTATCTCAAGATCTTAGAATGGGTAAAG : 1726
42 : lyIleAlaAlaValPheLysLysLysPheGlyGlyIleGlnGluLeuLeuAsnGlnGlnLys : 61
|||||||| !:!!||||||||||||!:!! !|||:!!.!.|||||| ! !||||||""" + " "
+ """
lyIleAlaTyrIlePheLysLysLysTyrGluGlyLeuAsnGluLeuLysAlaGlnGlnCys
1725 : GTATCGCATATATTTTCAAGAAAAAATATGAAGGATTAAATGAATTGAAAGCTCAACAATGT : 1666
62 : LysThrGlyAspValAlaValLeuLysArgAspAsnArgTyrValTyrTyrLeuIleThrLy : 82
|||..!|||.!.|||||| !|||:!!|||||||||||||||:!!!:!||||||||||||||
LysValGlyGlnValAlaTyrLeuGlnArgAspAsnArgTyrIlePheTyrLeuIleThrLy
1665 : AAAGTCGGTCAAGTTGCTTATCTTCAACGTGATAATCGTTATATTTTTTATTTAATTACTAA : 1603
83 : sAsnLysTyrPheHisLysProThrTyrAspAsnLeuGlnLysSerLeuAspAlaMetLysL : 103
| !! ! !!:! !!|||||| ! ! ! .!.!!!:!!! !||||||! ! !:!!!:!""" + " "
+ """
sTyrTyrValTyrAspLysProAspArgLysGluPheGluThrSerLeuValGluLeuArgA
1602 : ATATTATGTTTACGATAAACCTGATCGTAAAGAATTTGAAACAAGTTTGGTGGAATTGAGAA : 1540
104 : euHisCysValGluAsnGlyValThrArgIleSerMetProLysIleGlyCysGlyLeuAsp : 123
! |||! !:!! !||||||! ! !!:!!|||:!:|||::!|||||| !|||||||||
rgLeuCysGluGlnLeuGlyValArgGlyLeuSerValProArgIleGlyThrGlyLeuAsp
1539 : GGTTGTGTGAACAACTTGGTGTTAGAGGTTTAAGTGTTCCTCGGATTGGAACTGGATTGGAT : 1480
124 : ArgLeuAspTrpGluArgValSerThrMetLeuGluGluValPheGluGlyThrAspValTy : 144
!!|||..!! !... !|||!.!!:! :!!.!.|||!.!|||||||||!:!:!!:!! !
GlyLeuSerLeuSerTyrValLysSerAlaIleAsnGluAlaPheGluGlySerAsnIleLy
1479 : GGGTTATCTTTGAGTTATGTTAAAAGTGCTATTAACGAAGCCTTTGAAGGGAGTAATATCAA : 1417
145 : rIleThrValTyrIleLeu : 150
:!!|||:!!!:! !|||
sValThrMetPheTyrLeu
1416 : AGTTACTATGTTTTATTTG : 1397
""")
class Query(object):
def __init__(self, f):
def nextline():
l = ''
while not l:
l = f.next()
#print l
return l
self.raw_query = nextline().strip()
q = self.raw_query[7:].split('PREDICTED: ')
self.Query = q[0].strip()
self.Predicted = len(q) > 1 and q[1].strip() or None
self.raw_target = nextline().strip()
t = self.raw_target[8:].split('Average coverage: ')
self.Target = t[0].strip()
self.AverageCoverage = len(t) > 1 and t[1].strip() or None
self.raw_model = nextline().strip()
self.Model = self.raw_model[7:]
self.raw_raw_score = nextline().strip()
self.RawScore = int(self.raw_raw_score[11:])
self.raw_query_range = nextline().strip()
self.QueryRange = self.raw_query_range.split(':')[1].split(' -> ')
self.QueryRange = map(int, self.QueryRange)
self.raw_target_range = nextline().strip()
self.TargetRange = self.raw_target_range.split(':')[1].split(' -> ')
self.TargetRange = map(int, self.TargetRange)
self.query_prot = ""
self.target_prot = ""
self.target_seq = ""
self.alignment = ""
self.vulgar = ""
self.gff = ""
self.state = [self._rd_blank,
self._rd_q,
self._rd_al,
self._rd_tgt,
self._rd_dna]
i = 0
while self.state[i](nextline()):
i = (i + 1) % len(self.state)
#print i
def iterate(self,
pred_qp=lambda x: True,
pred_tp=lambda x: True,
pred_ts=lambda x: True,
pred_a=lambda x: True):
return ((qp, tp, ts, a)
for qp, tp, ts, a in izip(self.query_prot, self.target_prot,
self.target_seq, self.alignment)
if pred_qp(qp) and pred_tp(tp)
and pred_ts(ts) and pred_a(a))
def _rd_blank(self, l):
return True
def _rd_q(self, l):
if l.startswith('vulgar'):
return False
#print "read query", l.strip()
self.query_prot += l.split(' : ')[1]
return True
def _rd_al(self, l):
#print "read alignment", l.strip()
self.alignment += l[8:-1]
return True
def _rd_tgt(self, l):
#print "read target", l.strip()
self.target_prot += l[8:-1]
return True
def _rd_dna(self, l):
#print "read target DNA", l.strip()
s = l.split(' : ')
self.target_seq += s[1]
#print l
#print "0123456789" * 8
#print int(s[2].strip()), self.target_range[1]
a = int(s[2].strip())
b = self.TargetRange[1]
return a != b and a != b + 1
class Exonerate(object):
def __init__(self, filename):
f = open(filename)
self.commandline = re.match(r'Command line: \[([^]]*)',
f.readline()).group(1)
self.hostname = re.match(r'Hostname: \[([^]]*)',
f.readline()).group(1)
self.queries = []
while True:
try:
l = f.next()
except StopIteration, si:
break
if not l:
continue
if l.startswith(C4_ALIGNMENT):
f.next() # skip ------
self.queries.append(Query(f))
elif l.startswith('vulgar:'):
self.queries[-1].vulgar = l[7:].strip()
elif l.startswith(START_GFF):
gff = []
l = f.next()
while not l.startswith(END_GFF):
gff.append(l)
l = f.next()
self.queries[-1].gff = parse_gff2(iter(gff))