نبذة مختصرة : This article introduces a new interface for T-Coffee, a consistency-based multiple sequence alignment program. This interface provides an easy and intuitive access to the most popular functionality of the package. These include the default T-Coffee mode for protein and nucleic acid sequences, the M-Coffee mode that allows combining the output of any other aligners, and template-based modes of T-Coffee that deliver high accuracy alignments while using structural or homology derived templates. These three available template modes are Expresso for the alignment of protein with a known 3D-Structure, R-Coffee to align RNA sequences with conserved secondary structures and PSI-Coffee to accurately align distantly related sequences using homology extension. The new server benefits from recent improvements of the T-Coffee algorithm and can align up to 150 sequences as long as 10 000 residues and is available from both http://www.tcoffee.org and its main mirror http://tcoffee.crg.cat. Funding for open access charge: Plan Nacional (BFU2008-00419 to C.N. and P.D.T.); 7th Framework Programme of the European Commission, the LEISHDRUG (no 223414) and the Quantomics (KBBE-2A-222664) project; Computational resources are provided by the Center for Genomic Regulation (CRG) of Barcelona and the Vital-IT ( http://www.vital-it.ch ) Center for high-performance computing of the Swiss Institute of Bioinformatics; CUR of DIUE of GENCAT (to M.O. and A.M.); the Spanish ministry of education (TIN2008-05913); Consolider project (CSD 2007-00050);’ Super-computacion y e-Ciencia (SYEC)’.
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