/usr/share/seqsero/libs/Otype_determine_analysis.py is in seqsero 1.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 | #!/usr/bin/env python
'''
revised at 11/24/2013
note:
The .py file mainly designed to deal with 5 different situations: 1.the gnd and galF on same contig; 2.the two genes on different contigs;
3.the two genes on different contigs, and gnd gene is splitted by two contigs; 4.the two genes on different contigs, and galF gene is splitted by two contigs;
5.the two genes on different contigs, and the two genes are both splitted by two contigs respectively;
input:
1) <gnd_galF_sequence>: a fasta file containing galF and gnd sequences
2) <target>: a fasta file containing the genome (may be seperated contigs), mainly as the blast database for <gnd_galF_sequence> to extract rfb region
3) <database>: a fasta file containing rfb regions of 46 different O-serotypes
output: the region between the galF and gnd in the target(blatdb) sequebce (the rfb region, assuming the rfb region is flanked by the two genes)
synopsis: ./Otype_determine_analysis.py <gnd_galF_sequence> <target> <database>
'''
from __future__ import division
import sys
import os
from Bio.Blast import NCBIXML
from Bio import SeqIO
def test_O29(subdatabase):
first_hspbit=[]
first_alignmentlist=[]
global Choice,Choice_score,O_9_score,O_2_score
O_9_score=0
O_2_score=0
os.system('makeblastdb -in database/'+subdatabase+' -out '+subdatabase+'_db -dbtype nucl')###01/28/2015
os.system('blastn -query '+target+' -db '+subdatabase+'_db -out '+subdatabase+'_vs_'+target+'.xml '+'-outfmt 5')###01/28/2015
xml_file=subdatabase+'_vs_'+target+'.xml'
result_handle=open(xml_file)
blast_record=NCBIXML.parse(result_handle)
records=list(blast_record)
if subdatabase=="tyr_of_O2_O9.fasta":
for record in records: #there are many records (i.e. the '>' in query file), so change another method
for alignment in record.alignments:
if 'O-9' in alignment.hit_def:
for hsp in alignment.hsps:
if hsp.expect<E_thresh:
O_9_score=O_9_score+hsp.bits
elif 'O-2' in alignment.hit_def:
for hsp in alignment.hsps:
if hsp.expect<E_thresh:
O_2_score=O_2_score+hsp.bits
if O_9_score>100:
if O_9_score>O_2_score:
print '$$$ Most possible O_type: O-9','\n'
print '$$$ longest_bit_score:',O_9_score,'\n'
else:
print '$$$ Most possible O_type: O-2','\n'
print '$$$ longest_bit_score:',O_2_score,'\n'
else:
print "Assumpition wrong, no O2 or O9, return to re-analysis"
if ('O-2_' not in Sec_Choice) and ('O-9_' not in Sec_Choice):
print '$$$ Most possible O_type Choice (no tyr difference):',Sec_Choice
if (('O-2_' in Sec_Choice) or ('O-9_' in Sec_Choice)) and ('O-2_' not in Third_Choice) and ('O-9_' not in Third_Choice):
print '$$$ Most possible O_type Choice (no tyr difference):',Third_Choice
os.system("rm tyr_of_O2_O9.fasta_db.*")###01/28/2015
os.system("rm "+xml_file)###01/28/2015
if subdatabase=="oafA_of_O4_O5.fasta":
try:
for record in records: #there are many records (i.e. the '>' in query file), so change another method
for alignment in record.alignments:
if 'O-4_full' in alignment.hit_def:
for hsp in alignment.hsps:
if hsp.expect<E_thresh:
O_9_score=O_9_score+hsp.bits
elif 'O-4_5-' in alignment.hit_def:
for hsp in alignment.hsps:
if hsp.expect<E_thresh:
O_2_score=O_2_score+hsp.bits
if O_9_score>100:
if O_9_score>O_2_score:
print '$$$O5_none_7_base_deletion','\n'
print '$$$ longest_bit_score:',O_9_score,'\n'
else:
print '$$$O5-','\n'
print '$$$ longest_bit_score:',O_2_score,'\n'
else:
print '$$$O5_none_7_base_deletion,unsure','\n'
os.system("rm oafA_of_O4_O5.fasta_db.*")###01/28/2015
os.system("rm "+xml_file)###01/28/2015
except:
print "No oafA genes"
if subdatabase=="O_3,10_and_1,3,19_spe.fasta":
try:
for record in records: #there are many records (i.e. the '>' in query file), so change another method
for alignment in record.alignments:
if 'O_3,10_not_in_1,3,19' in alignment.hit_def:
for hsp in alignment.hsps:
if hsp.expect<E_thresh:
O_9_score=O_9_score+hsp.bits
elif 'O_1,3,19_not_in_3,10' in alignment.hit_def:
for hsp in alignment.hsps:
if hsp.expect<E_thresh:
O_2_score=O_2_score+hsp.bits
if O_9_score>200:
if O_9_score>O_2_score:
print '$$$O3,10 more possible','\n'
print '$$$ longest_bit_score:',O_9_score,'\n'
else:
if O_2_score>100:
print '$$$O1,3,19 more possible','\n'
print '$$$ longest_bit_score:',O_2_score,'\n'
os.system("rm O_3,10_and_1,3,19_spe.fasta_db.*")###01/28/2015
os.system("rm "+xml_file)###01/28/2015
except:
print "No O3,10_and_O1,3,19 spe sequences"
def show_result():
global First_Choice
global Sec_Choice
global Third_Choice
hspbit=[]
alignmentlist=[]
for record in records:
for alignment in record.alignments:
hsp_bit_score=0
startlist=[]
endlist=[]
for hsp in alignment.hsps:
if hsp.expect<E_thresh:
start=hsp.query_start
end=hsp.query_end
if len(startlist)==0:
startlist.append(start)
endlist.append(end)
hsp_bit_score=hsp_bit_score+hsp.bits
elif len(startlist)==1:
if end<=startlist[0] or start>=endlist[0]:
startlist.append(start)
endlist.append(end)
hsp_bit_score=hsp_bit_score+hsp.bits
if start>=startlist[0] and end<=endlist[0]:
print hsp_bit_score,'Fully overlapped hsp, ignore',hsp_bit_score
continue
if start<startlist[0] and startlist[0]<end<endlist[0]:
print hsp_bit_score,'Partially overlapped hsp, trying to extract unoverlap part',hsp_bit_score
newend=startlist[0]-1
percentage=(newend-start)/(end-start)
startlist.append(start)
endlist.append(newend)
hsp_bit_score=hsp_bit_score+percentage*hsp.bits
if end>endlist[0] and startlist[0]<start<endlist[0]:
print hsp_bit_score,'Partially overlapped hsp, trying to extract unoverlap part',hsp_bit_score
newstart=endlist[0]+1
percentage=(end-newstart)/(end-start)
startlist.append(newstart)
endlist.append(end)
hsp_bit_score=hsp_bit_score+percentage*hsp.bits
elif len(startlist)>1:
startlist.sort()
endlist.sort()
length=len(startlist)
if end<=startlist[0] or start>=endlist[length-1]:
startlist.append(start)
endlist.append(end)
hsp_bit_score=hsp_bit_score+hsp.bits
if start<startlist[0] and startlist[0]<end<endlist[0]:
print hsp_bit_score,'Partially overlapped hsp, trying to extract unoverlap part',hsp_bit_score
newend=startlist[0]-1
percentage=(newend-start)/(end-start)
startlist.append(start)
endlist.append(newend)
hsp_bit_score=hsp_bit_score+hsp.bits*percentage
if end>endlist[length-1] and startlist[length-1]<start<endlist[length-1]:
print hsp_bit_score,'Partially overlapped hsp, trying to extract unoverlap part',hsp_bit_score
newstart=endlist[length-1]+1
percentage=(end-newstart)/(end-start)
startlist.append(newstart)
endlist.append(end)
hsp_bit_score=hsp_bit_score+hsp.bits*percentage
else:
for i in range(0,length-1): #use two i and i+1 as basic combinations
if (start>=startlist[i] and end<=endlist[i]) or (start>=startlist[i+1] and end<=endlist[i+1]):
print hsp_bit_score,'Fully overlapped hsp, ignore',hsp_bit_score
continue
if endlist[i]<=start<end<=startlist[i+1]:
startlist.append(start)
endlist.append(end)
hsp_bit_score=hsp_bit_score+hsp.bits
if startlist[i]<=start<=endlist[i] and endlist[i]<end<startlist[i+1]:
print hsp_bit_score,'Partially overlapped hsp, trying to extract unoverlap part',hsp_bit_score
newstart=endlist[i]+1
percentage=(end-newstart)/(end-start)
startlist.append(newstart)
endlist.append(end)
hsp_bit_score=hsp_bit_score+hsp.bits*percentage
if endlist[i]<start<startlist[i+1] and startlist[i+1]<=end<=endlist[i+1]:
print hsp_bit_score,'Partially overlapped hsp, trying to extract unoverlap part',hsp_bit_score
newend=startlist[i+1]-1
percentage=(newend-start)/(end-start)
startlist.append(start)
endlist.append(newend)
hsp_bit_score=hsp_bit_score+hsp.bits*percentage
alignment=alignment.hit_def
hspbit.append(hsp_bit_score)
alignmentlist.append(alignment)
scorelist=dict(zip(alignmentlist,hspbit))
score=0
for Otype in scorelist:
if scorelist[Otype]>score:
First_Choice=Otype
score=scorelist[Otype]
secscore=0
for Otype in scorelist:
if scorelist[Otype]>secscore and Otype!=First_Choice:
Sec_Choice=Otype
secscore=scorelist[Otype]
thirdscore=0
for Otype in scorelist:
if scorelist[Otype]>thirdscore and Otype!=First_Choice and Otype!=Sec_Choice:
Third_Choice=Otype
thirdscore=scorelist[Otype]
if thirdscore==0:
names=First_Choice+Sec_Choice
else:
names=First_Choice+Sec_Choice+Third_Choice
if secscore==0:
names=First_Choice
else:
names=First_Choice+Sec_Choice
if score==0:
print "$$$ No O_type, due to no hit of rfb"
names=""
if 'O-2_' in names and 'O-9_' in names and ('O-2_' in First_Choice or 'O-9_' in First_Choice):
print '#Contain O2 and O9, so change to special test'
test_O29("tyr_of_O2_O9.fasta")
else:
if score>0:
print '$$$ Most possible O_type: ',First_Choice,'\n'
print '$$$ Most bit_score:',score,'\n'
if "O-4_" in First_Choice:#$$$$$$$
test_O29("oafA_of_O4_O5.fasta")#$$$$$$$
if "O-1,3,19" in First_Choice or "O-3,10" in First_Choice:
test_O29("O_3,10_and_1,3,19_spe.fasta")#$$$$$$$
if secscore>0:
print '$$$ Second possible O_type: ',Sec_Choice,'\n'
print '$$$ Second bit_score:',secscore,'\n'
if thirdscore>0:
print '$$$ Third possible O_type: ',Third_Choice,'\n'
print '$$$ Third bit_score:',thirdscore,'\n'
queries=sys.argv[1]
target=sys.argv[2]
database=sys.argv[3]
output=target.split('.')[0]+'_out.fa'
print "$$:",target
os.system('makeblastdb -in '+target+' -out '+target+'_db '+'-dbtype nucl')###01/28/2015
os.system('blastn -query '+queries+' -db '+target+'_db '+'-out '+queries+'_vs_'+target+'.xml '+'-outfmt 5')###01/28/2015, since it's abs address for "run_auto*.py", so no need to change "query" address this time
xml_file=queries+'_vs_'+target+'.xml'
print '\n'
result_handle=open(xml_file)
blast_record=NCBIXML.parse(result_handle)
blast_record=list(blast_record)
target_seq=SeqIO.parse(target,'fasta')
target_seq=list(target_seq)
#os.system("rm "+xml_file)###01/28/2015
#os.system("rm "+target+'_db.*')###01/28/2015
if len(blast_record)==2:
print 'Hits have been got'+'\n'
if len(blast_record[0].alignments)==1 and len(blast_record[1].alignments)==1:
print 'Checking the number of alignments: 2 alignments obtained'+'\n'
if len(blast_record[0].alignments[0].hsps)==1 and len(blast_record[1].alignments[0].hsps)==1:
print 'Checking the number of hsps: each alignment has 1 hsp'+'\n'
if blast_record[0].alignments[0].hit_def==blast_record[1].alignments[0].hit_def:
print 'Checking locations of hits: Both hits are located in '+'"'+str(blast_record[0].alignments[0].hit_def)+'"'+'...'+'\n'
hit_1_start=blast_record[0].alignments[0].hsps[0].sbjct_start
hit_1_end=blast_record[0].alignments[0].hsps[0].sbjct_end
hit_2_start=blast_record[1].alignments[0].hsps[0].sbjct_start
hit_2_end=blast_record[1].alignments[0].hsps[0].sbjct_end
if hit_1_start>hit_1_end:
buffer=hit_1_start
hit_1_start=hit_1_end
hit_1_end=buffer
if hit_2_start>hit_2_end:
buffer=hit_2_start
hit_2_start=hit_2_end
hit_2_end=buffer
print 'hit_1_start: '+str(hit_1_start)
print 'hit_1_end: '+str(hit_1_end)
print 'hit_2_start: '+str(hit_2_start)
print 'hit_2_end: '+str(hit_2_end)
if hit_1_end<hit_2_start:
extract_start=hit_1_end+1
extract_end=hit_2_start-1
else:
extract_start=hit_2_end+1
extract_end=hit_1_start-1
print 'start: '+str(extract_start), 'end: '+str(extract_end)+'\n'
for contig in target_seq:
if (contig.description==blast_record[0].alignments[0]) or (contig.description.replace(" ","")==blast_record[0].alignments[0].hit_def.replace(" ","")):
target_contig=contig
rfb_region=target_contig[extract_start:extract_end]
print 'Extracted rfb region length: '+str(len(rfb_region.seq.tostring()))+'\n'
print 'Extracted rfb region saved in: '+output+'\n'
outfile=open(output,'w')
title='>'+target.split('.')[0]+' rfb region:'+blast_record[0].alignments[0].hit_def+':'+str(extract_start)+' to '+str(extract_end)+'_'+str(len(rfb_region.seq.tostring()))+'bp'+')'
outfile.write(title)
outfile.write('\n')
outfile.write(rfb_region.seq.tostring())
outfile.close()
os.system('makeblastdb -in '+database+' -out '+database+'_db '+'-dbtype nucl')
os.system('blastn -query '+output+' -db '+database+'_db '+'-out '+'Blast_Otype_'+target+'.xml '+'-outfmt 5')
xml_file='Blast_Otype_'+target+'.xml'
print '\n'
filehandle=open(xml_file)
records=NCBIXML.parse(filehandle)
records=list(records)
target_hspbit=0 #give a original value to target_hspbit
second_hspbit=0
third_hspbit=0
E_thresh=1e-10
show_result()
else:
print 'Checking locations of hits: the two hits are not located in same contig......'+'\n'
hit_1_start=blast_record[0].alignments[0].hsps[0].sbjct_start
hit_1_end=blast_record[0].alignments[0].hsps[0].sbjct_end
hit_2_start=blast_record[1].alignments[0].hsps[0].sbjct_start
hit_2_end=blast_record[1].alignments[0].hsps[0].sbjct_end
if hit_1_start>hit_1_end:
buffer=hit_1_start
hit_1_start=hit_1_end
hit_1_end=buffer
if hit_2_start>hit_2_end:
buffer=hit_2_start
hit_2_start=hit_2_end
hit_2_end=buffer
outfile=open(output,'w')
for contig in target_seq:
if contig.description==blast_record[0].alignments[0].hit_def:
potentialsequence1=contig.seq[0:hit_1_start-1].tostring()
potentialsequence2=contig.seq[hit_1_end+1:].tostring()
title1='>'+target.split('.')[0]+' potential rfb region:'+blast_record[0].alignments[0].hit_def+':0 to '+str(hit_1_start-1)+'_total:'+str(len(potentialsequence1))+'bp'
outfile.write(title1)
outfile.write('\n')
outfile.write(potentialsequence1)
outfile.write('\n')
title2='>'+target.split('.')[0]+' potential rfb region:'+blast_record[0].alignments[0].hit_def+':'+str(hit_1_end+1)+' to contig end'+'_total:'+str(len(potentialsequence2))+'bp'
outfile.write(title2)
outfile.write('\n')
outfile.write(potentialsequence2)
outfile.write('\n')
elif contig.description==blast_record[1].alignments[0].hit_def:
potentialsequence1=contig.seq[0:hit_2_start-1].tostring()
potentialsequence2=contig.seq[hit_2_end+1:].tostring()
title1='>'+target.split('.')[0]+' potential rfb region:'+blast_record[1].alignments[0].hit_def+':0 to '+str(hit_2_start-1)+'_total:'+str(len(potentialsequence1))+'bp'
outfile.write(title1)
outfile.write('\n')
outfile.write(potentialsequence1)
outfile.write('\n')
title2='>'+target.split('.')[0]+' potential rfb region:'+blast_record[1].alignments[0].hit_def+':'+str(hit_2_end+1)+' to contig end'+'_total:'+str(len(potentialsequence2))+'bp'
outfile.write(title2)
outfile.write('\n')
outfile.write(potentialsequence2)
outfile.write('\n')
outfile.close()
os.system('makeblastdb -in '+database+' -out '+database+'_db '+'-dbtype nucl')
os.system('blastn -query '+output+' -db '+database+'_db '+'-out '+'Blast_Otype_'+target+'.xml '+'-outfmt 5')
xml_file='Blast_Otype_'+target+'.xml'
print '\n'
filehandle=open(xml_file)
records=NCBIXML.parse(filehandle)
records=list(records)
realrecord1=records[0]
if len(records[1].alignments)>len(records[0].alignments):
realrecord1=records[1]
realrecord2=records[2]
if len(records[3].alignments)>len(records[2].alignments):
realrecord2=records[3]
title='>'+records[0].query.split(':')[0]+'_combined_potential_sequences'
filecontent=SeqIO.parse(output,'fasta')
filecontent=list(filecontent)
for contig in filecontent:
if contig.description==realrecord1.query:
sequence=contig.seq.tostring()
for contig in filecontent:
if contig.description==realrecord2.query:
sequence=sequence+contig.seq.tostring()
outfile=open('combined_sequence.fasta','w')
outfile.write(title)
outfile.write('\n')
outfile.write(sequence)
outfile.close()
os.system('blastn -query combined_sequence.fasta'+' -db '+database+'_db '+'-out '+'Combined_seq_blast_'+target+'.xml '+'-outfmt 5')
xml_file='Combined_seq_blast_'+target+'.xml'
print '\n'
filehandle=open(xml_file)
records=NCBIXML.parse(filehandle)
records=list(records)
E_thresh=1e-10
show_result()
else:
print '$$$ No O_type result, please check the number of hsps: some alignment have more than 1 hsp (galF or gnd sequences has one more hits in tested genome), that\'s unusual for for our short sequence gnd and galF, please check your submited sequence'+'\n'
elif len(blast_record[0].alignments)>1 and len(blast_record[1].alignments)==1:
print 'The gnd gene is splited on different contigs of your submitted sequence' +'\n'
for record in blast_record:
for alignment in record.alignments:
if len(alignment.hsps)!=1:
print '$$$ No O_type result, please check the number of hsp: some alignment have more than 1 hsp (galF or gnd sequences has one more hits in tested genome), that\'s unusual for our short sequence gnd and galF, please check your submited sequence'+'\n'
break
print 'Each alignment has one hsps'+'\n'
target_seq=SeqIO.parse(target,'fasta')
target_seq=list(target_seq)
outfile=open(output,'w')
for alignment in blast_record[0].alignments:
for contig in target_seq:
if contig.description==alignment.hit_def and len(alignment.hsps[0].sbjct)!=len(contig.seq):
hitstart=alignment.hsps[0].sbjct_start
hitend=alignment.hsps[0].sbjct_end
if hitstart>hitend:
buffer=hitstart
hitstart=hitend
hitend=buffer
potential1=contig.seq[0:hitstart-1].tostring()
title1='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':0 to '+str(hitstart-1)+'_total:'+str(len(potential1))+'bp'
potential2=contig.seq[hitend+1:].tostring()
title2='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':'+str(hitend+1)+' to contig end'+'_total:'+str(len(potential2))+'bp'
aim_sequence=potential1
title=title1
if len(potential1)<len(potential2):
aim_sequence=potential2
title=title2
outfile.write(title)
outfile.write('\n')
outfile.write(aim_sequence)
outfile.write('\n')
for alignment in blast_record[1].alignments:
for contig in target_seq:
if contig.description==alignment.hit_def:
hitstart=alignment.hsps[0].sbjct_start
hitend=alignment.hsps[0].sbjct_end
if hitstart>hitend:
buffer=hitstart
hitstart=hitend
hitend=buffer
potential1=contig.seq[0:hitstart-1].tostring()
title1='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':0 to '+str(hitstart-1)+'_total:'+str(len(potential1))+'bp'
potential2=contig.seq[hitend+1:].tostring()
title2='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':'+str(hitend+1)+' to contig end'+'_total:'+str(len(potential2))+'bp'
aim_sequence=potential1
outfile.write(title1)
outfile.write('\n')
outfile.write(potential1)
outfile.write('\n')
outfile.write(title2)
outfile.write('\n')
outfile.write(potential2)
outfile.write('\n')
outfile.close()
os.system('makeblastdb -in '+database+' -out '+database+'_db '+'-dbtype nucl')
os.system('blastn -query '+output+' -db '+database+'_db '+'-out '+'Blast_Otype_'+target+'.xml '+'-outfmt 5')
print '\n'
xml_file2='Blast_Otype_'+target+'.xml'
filehandle=open(xml_file2)
records=NCBIXML.parse(filehandle)
records=list(records)
print len(records)
realrecord1=records[0]
if len(records[1].alignments)>len(records[0].alignments):
realrecord1=records[1]
realrecord2=records[2]
if len(records[3].alignments)>len(records[2].alignments):
realrecord2=records[3]
title='>'+records[0].query.split(':')[0]+'_combined_potential_sequences'
filecontent=SeqIO.parse(output,'fasta')
filecontent=list(filecontent)
for contig in filecontent:
if contig.description==realrecord1.query:
sequence=contig.seq.tostring()
for contig in filecontent:
if contig.description==realrecord2.query:
sequence=sequence+contig.seq.tostring()
outfile=open('combined_sequence.fasta','w')
outfile.write(title)
outfile.write('\n')
outfile.write(sequence)
outfile.close()
os.system('blastn -query combined_sequence.fasta'+' -db '+database+'_db '+'-out '+'Combined_seq_blast_'+target+'.xml '+'-outfmt 5')
xml_file='Combined_seq_blast_'+target+'.xml'
print '\n'
filehandle=open(xml_file)
records=NCBIXML.parse(filehandle)
records=list(records)
E_thresh=1e-10
show_result()
elif len(blast_record[0].alignments)==1 and len(blast_record[1].alignments)>1:
print 'The galF gene is splited on different contigs of your submitted sequence' +'\n'
for record in blast_record:
for alignment in record.alignments:
if len(alignment.hsps)!=1:
print '$$$ No O_type result, please check the number of hsps: some alignment have more than 1 hsp (galF or gnd sequences has one more hits in tested genome), that\'s unusual for our short sequence gnd and galF, please check your submited sequence'+'\n'
break
print 'Each alignment has one hsp'+'\n'
outfile=open(output,'w')
for alignment in blast_record[0].alignments:
for contig in target_seq:
if contig.description==alignment.hit_def:
hitstart=alignment.hsps[0].sbjct_start
hitend=alignment.hsps[0].sbjct_end
if hitstart>hitend:
buffer=hitstart
hitstart=hitend
hitend=buffer
potential1=contig.seq[0:hitstart-1].tostring()
title1='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':0 to '+str(hitstart-1)+'_total:'+str(len(potential1))+'bp'
potential2=contig.seq[hitend+1:].tostring()
title2='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':'+str(hitend+1)+' to contig end'+'_total:'+str(len(potential2))+'bp'
aim_sequence=potential1
outfile.write(title1)
outfile.write('\n')
outfile.write(potential1)
outfile.write('\n')
outfile.write(title2)
outfile.write('\n')
outfile.write(potential2)
outfile.write('\n')
for alignment in blast_record[1].alignments:
for contig in target_seq:
if contig.description==alignment.hit_def and len(alignment.hsps[0].sbjct)!=len(contig.seq):
hitstart=alignment.hsps[0].sbjct_start
hitend=alignment.hsps[0].sbjct_end
if hitstart>hitend:
buffer=hitstart
hitstart=hitend
hitend=buffer
potential1=contig.seq[0:hitstart-1].tostring()
title1='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':0 to '+str(hitstart-1)+'_total:'+str(len(potential1))+'bp'
potential2=contig.seq[hitend+1:].tostring()
title2='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':'+str(hitend+1)+' to contig end'+'_total:'+str(len(potential2))+'bp'
aim_sequence=potential1
title=title1
if len(potential1)<len(potential2):
aim_sequence=potential2
title=title2
outfile.write(title)
outfile.write('\n')
outfile.write(aim_sequence)
outfile.write('\n')
outfile.close()
os.system('makeblastdb -in '+database+' -out '+database+'_db '+'-dbtype nucl')
os.system('blastn -query '+output+' -db '+database+'_db '+'-out '+'Blast_Otype_'+target+'.xml '+'-outfmt 5')
print '\n'
xml_file='Blast_Otype_'+target+'.xml'
filehandle=open(xml_file)
records=NCBIXML.parse(filehandle)
records=list(records)
realrecord1=records[0]
if len(records[1].alignments)>len(records[0].alignments):
realrecord1=records[1]
realrecord2=records[2]
if len(records[3].alignments)>len(records[2].alignments):
realrecord2=records[3]
title='>'+records[0].query.split(':')[0]+'_combined_potential_sequences'
filecontent=SeqIO.parse(output,'fasta')
filecontent=list(filecontent)
for contig in filecontent:
if contig.description==realrecord1.query:
sequence=contig.seq.tostring()
for contig in filecontent:
if contig.description==realrecord2.query:
sequence=sequence+contig.seq.tostring()
outfile=open('combined_sequence.fasta','w')
outfile.write(title)
outfile.write('\n')
outfile.write(sequence)
outfile.close()
os.system('blastn -query combined_sequence.fasta'+' -db '+database+'_db '+'-out '+'Combined_seq_blast_'+target+'.xml '+'-outfmt 5')
xml_file='Combined_seq_blast_'+target+'.xml'
print '\n'
filehandle=open(xml_file)
records=NCBIXML.parse(filehandle)
records=list(records)
E_thresh=1e-10
show_result()
elif len(blast_record[0].alignments)>1 and len(blast_record[1].alignments)>1:
print 'The gnd and galF gene are both splited on different contigs of your submitted sequence' +'\n'
for record in blast_record:
for alignment in record.alignments:
if len(alignment.hsps)!=1:
print '$$$ No O_type result, please check the number of hsp: some alignment have more than 1 hsp (galF or gnd sequences has one more hits in tested genome), that\'s unusual for our short sequence gnd and galF, please check your submited sequence'+'\n'
break
print 'Each alignment has one hsps'+'\n'
outfile=open(output,'w')
for alignment in blast_record[0].alignments:
for contig in target_seq:
if contig.description==alignment.hit_def and len(alignment.hsps[0].sbjct)!=len(contig.seq):
hitstart=alignment.hsps[0].sbjct_start
hitend=alignment.hsps[0].sbjct_end
if hitstart>hitend:
buffer=hitstart
hitstart=hitend
hitend=buffer
potential1=contig.seq[0:hitstart-1].tostring()
title1='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':0 to '+str(hitstart-1)+'_total:'+str(len(potential1))+'bp'
potential2=contig.seq[hitend+1:].tostring()
title2='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':'+str(hitend+1)+' to contig end'+'_total:'+str(len(potential2))+'bp'
aim_sequence=potential1
title=title1
if len(potential1)<len(potential2):
aim_sequence=potential2
title=title2
outfile.write(title)
outfile.write('\n')
outfile.write(aim_sequence)
outfile.write('\n')
for alignment in blast_record[1].alignments:
for contig in target_seq:
if contig.description==alignment.hit_def and len(alignment.hsps[0].sbjct)!=len(contig.seq):
hitstart=alignment.hsps[0].sbjct_start
hitend=alignment.hsps[0].sbjct_end
if hitstart>hitend:
buffer=hitstart
hitstart=hitend
hitend=buffer
potential1=contig.seq[0:hitstart-1].tostring()
title1='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':0 to '+str(hitstart-1)+'_total:'+str(len(potential1))+'bp'
potential2=contig.seq[hitend+1:].tostring()
title2='>'+target.split('.')[0]+' potential rfb region:'+alignment.hit_def+':'+str(hitend+1)+' to contig end'+'_total:'+str(len(potential2))+'bp'
aim_sequence=potential1
title=title1
if len(potential1)<len(potential2):
aim_sequence=potential2
title=title2
outfile.write(title)
outfile.write('\n')
outfile.write(aim_sequence)
outfile.write('\n')
outfile.close()
os.system('makeblastdb -in '+database+' -out '+database+'_db '+'-dbtype nucl')
os.system('blastn -query '+output+' -db '+database+'_db '+'-out '+'Blast_Otype_'+target+'.xml '+'-outfmt 5')
xml_file='Blast_Otype_'+target+'.xml'
print '\n'
filehandle=open(xml_file)
records=NCBIXML.parse(filehandle)
records=list(records)
realrecord1=records[0]
if len(records[1].alignments)>len(records[0].alignments):
realrecord1=records[1]
realrecord2=records[2]
if len(records[3].alignments)>len(records[2].alignments):
realrecord2=records[3]
title='>'+records[0].query.split(':')[0]+'_combined_potential_sequences'
filecontent=SeqIO.parse(output,'fasta')
filecontent=list(filecontent)
for contig in filecontent:
if contig.description==realrecord1.query:
sequence=contig.seq.tostring()
for contig in filecontent:
if contig.description==realrecord2.query:
sequence=sequence+contig.seq.tostring()
outfile=open('combined_sequence.fasta','w')
outfile.write(title)
outfile.write('\n')
outfile.write(sequence)
outfile.close()
os.system('blastn -query combined_sequence.fasta'+' -db '+database+'_db '+'-out '+'Combined_seq_blast_'+target+'.xml '+'-outfmt 5')
xml_file='Combined_seq_blast_'+target+'.xml'
print '\n'
filehandle=open(xml_file)
records=NCBIXML.parse(filehandle)
records=list(records)
E_thresh=1e-10
show_result()
else:
print '$$$ $$$ No O_type result, Attention: unusual number of hits, no hits for galF or gnd! Check blast output...'+'\n'
os.system('rm '+target+'_db.'+'*')
|