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© Tessa Quax, David Prangishvili, Gerard Pehau-Arnaudet, Jean-Marc Panaud
VAPs (virus-associated pyramids) formed by the Sulfolobus islandicus rod-shaped virus 2 (SIRV2) in cells of its hyperthermophilic archaeal host. Negative contrast electron micrography.
Publication : Nature biotechnology

Taxonomic assignment of uncultivated prokaryotic virus genomes is enabled by gene-sharing networks

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Nature biotechnology - 06 May 2019

Bin Jang H, Bolduc B, Zablocki O, Kuhn JH, Roux S, Adriaenssens EM, Brister JR, Kropinski AM, Krupovic M, Lavigne R, Turner D, Sullivan MB

Link to Pubmed [PMID] – 31061483

Nat. Biotechnol. 2019 May;

Microbiomes from every environment contain a myriad of uncultivated archaeal and bacterial viruses, but studying these viruses is hampered by the lack of a universal, scalable taxonomic framework. We present vConTACT v.2.0, a network-based application utilizing whole genome gene-sharing profiles for virus taxonomy that integrates distance-based hierarchical clustering and confidence scores for all taxonomic predictions. We report near-identical (96%) replication of existing genus-level viral taxonomy assignments from the International Committee on Taxonomy of Viruses for National Center for Biotechnology Information virus RefSeq. Application of vConTACT v.2.0 to 1,364 previously unclassified viruses deposited in virus RefSeq as reference genomes produced automatic, high-confidence genus assignments for 820 of the 1,364. We applied vConTACT v.2.0 to analyze 15,280 Global Ocean Virome genome fragments and were able to provide taxonomic assignments for 31% of these data, which shows that our algorithm is scalable to very large metagenomic datasets. Our taxonomy tool can be automated and applied to metagenomes from any environment for virus classification.

https://www.ncbi.nlm.nih.gov/pubmed/31061483