M4T, a comparative protein structure modeling server

Narcis Fernandez-Fuentes, Carlos J Madrid-Aliste, Brajesh Kumar Rai, J Eduardo Fajardo, András Fiser

Research output: Contribution to journalArticlepeer-review

111 Citations (SciVal)


Multiple Mapping Method with Multiple Templates (M4T) (http://www.fiserlab.org/servers/m4t) is a fully automated comparative protein structure modeling server. The novelty of M4T resides in two of its major modules, Multiple Templates (MT) and Multiple Mapping Method (MMM). The MT module of M4T selects and optimally combines the sequences of multiple template structures through an iterative clustering approach that takes into account the 'unique' contribution of each template, its sequence similarity to other template sequences and to the target sequences, and the quality of its experimental resolution. MMM module is a sequence-to-structure alignment method that is aimed at improving the alignment accuracy, especially at lower sequence identity levels. The current implementation of MMM takes inputs from three profile-to-profile-based alignment methods and iteratively compares and ranks alternatively aligned regions according to their fit in the structural environment of the template structure. The performance of M4T was benchmarked on CASP6 comparative modeling target sequences and on a larger independent test set and showed a favorable performance to current state-of-the-art methods.
Original languageEnglish
Pages (from-to)W363-8
Number of pages6
JournalNucleic Acids Research
Issue numberWeb Server issue
Publication statusPublished - 2007


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