Nucleic Acids Res. 2006 Mar 23;34(6):1692-9. Print 2006.

M-Coffee: combining multiple sequence alignment methods with T-Coffee.

Wallace IM, O'Sullivan O, Higgins DG, Notredame C.

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The Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Ireland.

Abstract

We introduce M-Coffee, a meta-method for assembling multiple sequence alignments (MSA) by combining the output of several individual methods into one single MSA. M-Coffee is an extension of T-Coffee and uses consistency to estimate a consensus alignment. We show that the procedure is robust to variations in the choice of constituent methods and reasonably tolerant to duplicate MSAs. We also show that performances can be improved by carefully selecting the constituent methods. M-Coffee outperforms all the individual methods on three major reference datasets: HOMSTRAD, Prefab and Balibase. We also show that on a case-by-case basis, M-Coffee is twice as likely to deliver the best alignment than any individual method. Given a collection of pre-computed MSAs, M-Coffee has similar CPU requirements to the original T-Coffee. M-Coffee is a freeware open-source package available from http://www.tcoffee.org/.

PMID:: 16556910; [PubMed - indexed for MEDLINE]
PMCID:: PMC1410914

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