[mira_talk] Re: contigs built only by one sequence

  • From: Laurent MANCHON <lmanchon@xxxxxxxxxxxxxx>
  • To: mira_talk@xxxxxxxxxxxxx
  • Date: Thu, 07 Jan 2010 09:56:31 +0100

Bastien Chevreux a écrit :
On Donnerstag 17 Dezember 2009 Laurent Manchon wrote:
--Hi,

i have made assembly on 454 reads (~600 000 reads) using mira 2.9.43 and
with this command line:

bin/mira -project=planaire -fasta=planaire.fa -job=denovo,est,normal,454
-notraceinfo -GENERAL:kcim=yes,not=3 -SK:rt=4
-CO:fnicpst=yes,rodirs=10,asir=yes
-CL:cpat=no,pec=no,pvlc=no,qc=no,bsqc=no,mbc=no,emlc=yes,mlcr=0,smlc=0,emrc
=yes,mrcr=0,smrc=0
 -AL:bip=5,bmin=10,mrs=90:egp=yes:egpl=reject_codongaps:megpp=100,mo=60
 -AS:mrl=30,bdq=30 -SK:mnr=yes,rt=8,mmhr=6

and i obtain 53867 contigs but some contigs (~18163) are only built
using one sequence, why ?
So, i don't understand...
I thought that contigs established(constituted) by a single sequence was
singulets and had to appear in debrislists, don't you ?

The default for this command line is to still save tagged singlets:

        Save tagged singlets in project (stsip)      :  [san]  yes
                                                        [454]  yes

so I suppose those reads were tagged in earlier passes. If not, please confirm the current version has the same behaviour and tell, this would be a bug.

Regards,
  Bastien


okay by adding parameter -OUT:sssip=no the singlets are not saved in the assembly result.
so the command line syntax is (v2.9.43):

bin/mira -project=planaire -fasta=planaire.fa -job=denovo,est,normal,454 -OUT:sssip=no -notraceinfo -GENERAL:kcim=yes,not=3 -SK:rt=4 -CO:fnicpst=yes,rodirs=10,asir=yes,mr=no -CL:cpat=no,pec=no,pvlc=no,qc=no,bsqc=no,mbc=no,emlc=yes,mlcr=0,smlc=0,emrc=yes,mrcr=0,smrc=0 -AL:bip=5,bmin=10,mrs=90:egp=yes:egpl=reject_codongaps:megpp=100,mo=60 -AS:mrl=30,bdq=30 -SK:mnr=yes,rt=8,mmhr=6

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