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Old 01-27-2010, 01:43 AM   #1
Location: UK

Join Date: Jan 2010
Posts: 49
Default mira3 output

Hi I am a first year phd student trying my hand at bioinformatcs. I assembled about 190,000 454 reads with mira3 and I need some help going through the output.

The assembly info file indicated that I have 21,769 contigs. But the result fasta file shows around 24,000 sequences. I am assuming that the fasta sequences with the header name ending in 'c' (for example, >myProject_c1203) indicates a contig that was assembed. What are sequences that have header names ending in 's' or 'lrc' (>myproject_lrc2938).

Does mira3 discard sequences that it thinks is of low quality or too short? I noticed that the number of reads assembled is 119,794 (2508 singlets), whereas the number of reads I fed into mira3 was around 190,000.
damiankao is offline   Reply With Quote
Old 02-05-2010, 02:29 AM   #2
Peter (Biopython etc)
Location: Dundee, Scotland, UK

Join Date: Jul 2009
Posts: 1,543

I think "c" means a contig, "s" means singleton, and "lrc" is also a contig but where there were problems with repeats. Try Google:,1
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Old 02-05-2010, 07:10 AM   #3
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Location: WNY

Join Date: Nov 2009
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Hi Damiankao! I would stronlgy recommend signing up for the mira_talk mailing list ( as well. The community is very friendly and Mira's author, Bastien Chevreux, answers questions everyday.
AppleInformatics is offline   Reply With Quote

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