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ICTV Virus Taxonomy Profile: Aoguangviridae 2023
Yifan Zhou1,2, Yongjie Wang3, Mart Krupovic1
1Institut Pasteur, Université Paris Cité, Archaeal Virology Unit, Paris 75015, France.
The Aoguangviridae family comprises large dsDNA viruses infecting marine archaea, identified via metagenomics. These viruses possess extensive DNA replication machinery, contributing to our understanding of archaeal virology.
Area of Science:
- Virology
- Microbiology
- Genomics
Background:
- The Aoguangviridae family consists of double-stranded DNA (dsDNA) viruses linked to marine archaea.
- Current knowledge of Aoguangviridae is primarily derived from metagenomic studies.
- Virion structure is predicted to include an icosahedral capsid and a helical tail, aligning with the Caudoviricetes class.
Purpose of the Study:
- To summarize the International Committee on Taxonomy of Viruses (ICTV) report on the Aoguangviridae family.
- To provide an overview of the characteristics and classification of Aoguangviridae.
- To highlight the significance of Aoguangviridae in marine archaeal ecosystems.
Main Methods:
- Metagenomic analysis to discover and characterize Aoguangviridae and related viruses.
- Bioinformatic analysis of viral genomes to predict structure and function.
- Review and summarization of the ICTV report on Aoguangviridae.
Main Results:
- Aoguangviridae possess some of the largest known archaeal virus genomes.
- These viruses encode a comprehensive suite of DNA replication machinery and auxiliary functions.
- The family includes the species Aobingvirus yangshanense, with numerous unclassified relatives ('magroviruses') found globally.
Conclusions:
- Aoguangviridae represent a significant group of large dsDNA viruses in marine archaea.
- Their complex genomes suggest sophisticated replication strategies.
- Ongoing metagenomic discovery continues to expand the known diversity within this viral family.
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