Abstract
The database of Clusters of Orthologous Groups of proteins (COGs), which represents an attempt on a phylogenetic classification of the proteins encoded in complete genomes, currently consists of 2791 COGs including 45 350 proteins from 30 genomes of bacteria, archaea and the yeast Saccharomyces cerevisiae (http://www.ncbi.nlm.nih. gov/COG). In addition, a supplement to the COGs is available, in which proteins encoded in the genomes of two multicellular eukaryotes, the nematode Caenorhabditis elegans and the fruit fly Drosophila melanogaster, and shared with bacteria and/or archaea were included. The new features added to the COG database include information pages with structural and functional details on each COG and literature references, improvements of the COGNITOR program that is used to fit new proteins into the COGs, and classification of genomes and COGs constructed by using principal component analysis.
MeSH Terms
Animals
Archaea/genetics
Bacteria/genetics
Caenorhabditis elegans/genetics
Databases, Factual
Drosophila melanogaster/genetics
Genome
Information Storage and Retrieval
Internet
Phylogeny
Proteins/classification,genetics
Saccharomyces cerevisiae/genetics
Sequence Alignment
Authors & Affiliations
10 authors, click to expand affiliations / ORCID
Tatusov R L
National Center for Biotechnology Information, National Library of Medicine, National Institutes of Health, Bethesda, MD 20894, USA.
Natale D A
Garkavtsev I V
Tatusova T A
Shankavaram U T
Rao B S
Kiryutin B
Galperin M Y
Fedorova N D
Koonin E V
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