IUBio Biosequences .. Software .. Molbio soft .. Network News .. FTP

[Bio-software] Re: Converting Clustal alignment to a single consensus

Vince Mulholland via bio-soft%40net.bio.net (by Vince.Mulholland from sasa.gsi.gov.uk)
Tue Jan 26 05:46:39 EST 2010


A deceptively simple question, but one that doesn't seem to have a simple answer. I tried doing it in several ways, but none of the tools I usually use gave the desired results.

The only way I have been able to get anywhere was a bit convoluted and requires access to the commercial program SeqMan (part of the Lasergene package from DNAStar). Import unaligned DNA sequence files into SeqMan and assemble them into a contig. You can adjust the consensus calling by playing about with the options in the SeqMan parameters. You can also edit the consensus by hand. Then all you need to do is save the consensus to a text file.

This is not precisely what you wanted, but it seems to be the best available.



Vincent Mulholland
Molecular Biology Unit Manager -  Diagnostics & Molecular Biology Section
Science and Advice for Scottish Agriculture (SASA)

Hi Folks,

Does anyone know of software or a web page that will take a Clustal .aln 
file and simply spew out a single consensus sequence?

I have an alignment of thirty 2000bp nucleotide sequences and ideally 
want to simply stick a single letter consensus sequence into an 
isothermal primer design program.

At the moment we are generating the consensus sequence by hand but it's 
a pain to do!


I love deadlines. I especially like the whooshing noise they make as
they go flying by.

Duncan Clark
GeneSys Ltd.

More information about the Bio-soft mailing list

Send comments to us at biosci-help [At] net.bio.net