Title
Databases of homologous gene families for comparative genomics.
Abstract
Comparative genomics is a central step in many sequence analysis studies, from gene annotation and the identification of new functional regions in genomes, to the study of evolutionary processes at the molecular level (speciation, single gene or whole genome duplications, etc.) and phylogenetics. In that context, databases providing users high quality homologous families and sequence alignments as well as phylogenetic trees based on state of the art algorithms are becoming indispensable.We developed an automated procedure allowing massive all-against-all similarity searches, gene clustering, multiple alignments computation, and phylogenetic trees construction and reconciliation. The application of this procedure to a very large set of sequences is possible through parallel computing on a large computer cluster.Three databases were developed using this procedure: HOVERGEN, HOGENOM and HOMOLENS. These databases share the same architecture but differ in their content. HOVERGEN contains sequences from vertebrates, HOGENOM is mainly devoted to completely sequenced microbial organisms, and HOMOLENS is devoted to metazoan genomes from Ensembl. Access to the databases is provided through Web query forms, a general retrieval system and a client-server graphical interface. The later can be used to perform tree-pattern based searches allowing, among other uses, to retrieve sets of orthologous genes. The three databases, as well as the software required to build and query them, can be used or downloaded from the PBIL (Pôle Bioinformatique Lyonnais) site at http://pbil.univ-lyon1.fr/.
Year
DOI
Venue
2009
10.1186/1471-2105-10-S6-S3
BMC Bioinformatics
Keywords
Field
DocType
sequence analysis,gene family,algorithms,client server,graphical interface,similarity search,bioinformatics,sequence alignment,microarrays,comparative genomics,genomics,software requirements,phylogenetic tree,parallel computer,cluster analysis,gene cluster,phylogeny,multiple alignment,internet
Genome,Phylogenetic tree,Biology,Genomics,Comparative genomics,Computational biology,Phylogenetics,Functional genomics,Bioinformatics,Genetics,Gene Annotation,Database,Sequence analysis
Journal
Volume
Issue
ISSN
10 Suppl 6
S-6
1471-2105
Citations 
PageRank 
References 
41
1.29
16
Authors
8
Name
Order
Citations
PageRank
Simon Penel117314.56
Anne-Muriel Arigon2543.72
Jean-François Dufayard31189.11
Anne-Sophie Sertier4411.29
Vincent Daubin51185.65
Laurent Duret624121.45
Manolo Gouy722636.03
Guy Perrière829240.35