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eggNOG 4.5: a hierarchical orthology framework with improved functional annotations for eukaryotic, prokaryotic and viral sequences

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Item Type:Article
Title:eggNOG 4.5: a hierarchical orthology framework with improved functional annotations for eukaryotic, prokaryotic and viral sequences
Creators Name:Huerta-Cepas, J. and Szklarczyk, D. and Forslund, K. and Cook, H. and Heller, D. and Walter, M.C. and Rattei, T. and Mende, D.R. and Sunagawa, S. and Kuhn, M. and Jensen, L.J. and von Mering, C. and Bork, P.
Abstract:eggNOG is a public resource that provides Orthologous Groups (OGs) of proteins at different taxonomic levels, each with integrated and summarized functional annotations. Developments since the latest public release include changes to the algorithm for creating OGs across taxonomic levels, making nested groups hierarchically consistent. This allows for a better propagation of functional terms across nested OGs and led to the novel annotation of 95 890 previously uncharacterized OGs, increasing overall annotation coverage from 67% to 72%. The functional annotations of OGs have been expanded to also provide Gene Ontology terms, KEGG pathways and SMART/Pfam domains for each group. Moreover, eggNOG now provides pairwise orthology relationships within OGs based on analysis of phylogenetic trees. We have also incorporated a framework for quickly mapping novel sequences to OGs based on precomputed HMM profiles. Finally, eggNOG version 4.5 incorporates a novel data set spanning 2605 viral OGs, covering 5228 proteins from 352 viral proteomes. All data are accessible for bulk downloading, as a web-service, and through a completely redesigned web interface. The new access points provide faster searches and a number of new browsing and visualization capabilities, facilitating the needs of both experts and less experienced users. eggNOG v4.5 is available at http://eggnog.embl.de.
Keywords:Algorithms, Archaeal Proteins, Bacterial Proteins, Eukaryota, Molecular Sequence Annotation, Protein Databases, Protein Sequence Analysis, Proteome, Viral Proteins
Source:Nucleic Acids Research
ISSN:0305-1048
Publisher:Oxford University Press (U.K.)
Volume:44
Number:D1
Page Range:D286-D293
Date:4 January 2016
Official Publication:https://doi.org/10.1093/nar/gkv1248
PubMed:View item in PubMed

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