Scientific Publications

Automatic genome-wide reconstruction of phylogenetic gene trees.

Publication TypeJournal Article
AuthorsWapinski, I., Pfeffer A., Friedman N., and Regev A.
AbstractGene duplication and divergence is a major evolutionary force. Despite the growing number of fully sequenced genomes, methods for investigating these events on a genome-wide scale are still in their infancy. Here, we present SYNERGY, a novel and scalable algorithm that uses sequence similarity and a given species phylogeny to reconstruct the underlying evolutionary history of all genes in a large group of species. In doing so, SYNERGY resolves homology relations and accurately distinguishes orthologs from paralogs. We applied our approach to a set of nine fully sequenced fungal genomes spanning 150 million years, generating a genome-wide catalog of orthologous groups and corresponding gene trees. Our results are highly accurate when compared to a manually curated gold standard, and are robust to the quality of input according to a novel jackknife confidence scoring. The reconstructed gene trees provide a comprehensive view of gene evolution on a genomic scale. Our approach can be applied to any set of sequenced eukaryotic species with a known phylogeny, and opens the way to systematic studies of the evolution of individual genes, molecular systems and whole genomes. Supplementary information: Supplementary data are available at Bioinformatics online.
Year of Publication2007
JournalBioinformatics (Oxford, England)
Volume23
Issue13
Pagesi549-58
Date Published (YYYY/MM/DD)2007/07/01
ISSN Number1367-4803
DOI10.1093/bioinformatics/btm193
PubMedhttp://www.ncbi.nlm.nih.gov/pubmed/17646342?dopt=Abstract