Novel ssDNA virus recovered from estuarine mollusc (Amphibola crenata) whose replication associated protein (Rep) shares similarities with Rep-like sequences of bacterial origin

Anisha Dayaram, Sharyn Goldstien, Peyman Zawar-Reza, Christopher Gomez, Jon S. Harding, Arvind Varsani

Research output: Contribution to journalArticle

18 Scopus citations

Abstract

Over the past couple of years highly diverse novel ssDNA viruses have been discovered. Here, we present the first ssDNA virus, Gastropod-associated circular ssDNA virus (GaCSV), recovered from a mollusc Amphibola crenata Martyn 1784, which is a deposit feeder that grazes microorganisms and organic detritus on the surface of tidal mudflats. The GaCSV (2351 nt) genome contains two large bidirectionally transcribed ORFs. The smaller ORF (874 nt) has similarities to viral replication-associated protein (Rep) sequences of some bacteria and circoviruses, whereas the larger ORF (955 nt) does not relate to any sequences in public databases and we presume it potentially encodes the capsid protein. Phylogenetic analysis shows that the GaCSV Rep clusters with Rep-like sequences of bacterial origin, highlighting the role of ssDNA viruses in horizontal gene transfer. The occurrence of previously unknown viruses in organisms associated with human pollution is a relatively unexplored field.

Original languageEnglish (US)
Pages (from-to)1104-1110
Number of pages7
JournalJournal of General Virology
Volume94
Issue numberPART 5
DOIs
StatePublished - May 1 2013
Externally publishedYes

ASJC Scopus subject areas

  • Virology

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