Family relationships: should consensus reign?- consensus clustering for protein families

Macha Nikolski 1, 2 David James Sherman 1, 2
2 MAGNOME - Models and Algorithms for the Genome
INRIA Futurs, Université Sciences et Technologies - Bordeaux 1, École Nationale Supérieure d'Électronique, Informatique et Radiocommunications de Bordeaux (ENSEIRB), CNRS - Centre National de la Recherche Scientifique : UMR5800
Abstract : Motivation: Reliable identification of protein families is key to phylogenetic analysis, functional annotation and the exploration of protein function diversity in a given phylogenetic branch. As more and more complete genomes are sequenced, there is a need for powerful and reliable algorithms facilitating protein families construction. Results:We have formulated the problem of protein families construction as an instance of consensus clustering, for which we designed a novel algorithm that is computationally efficient in practice and produces high quality results. Our algorithm uses an election method to construct consensus families from competing clustering computations. Our consensus clustering algorithm is tailored to serve the specific needs of comparative genomics projects. First, it provides a robust means to incorporate results from different and complementary clustering methods, thus avoiding the need for an a priori choice that may introduce computational bias in the results. Second, it is suited to large-scale projects due to the practical efficiency. And third, it produces high quality results where families tend to represent groupings by biological function. Availability: This method has been used for Ge´nolevures project to compute protein families of Hemiascomycetous yeasts. The data are available online at Supplementary information: Supplementary data are available at
Type de document :
Article dans une revue
Bioinformatics, Oxford University Press (OUP), 2007, 23, pp.e71--e76. 〈10.1093/bioinformatics/btl314〉
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Soumis le : dimanche 6 janvier 2008 - 17:14:35
Dernière modification le : jeudi 11 janvier 2018 - 06:21:04



Macha Nikolski, David James Sherman. Family relationships: should consensus reign?- consensus clustering for protein families. Bioinformatics, Oxford University Press (OUP), 2007, 23, pp.e71--e76. 〈10.1093/bioinformatics/btl314〉. 〈inria-00202434〉



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