Viruses defined by the position of the virosphere within the replicator space

EV Koonin, VV Dolja, M Krupovic… - … and Molecular Biology …, 2021 - Am Soc Microbiol
Originally, viruses were defined as miniscule infectious agents that passed through filters
that retain even the smallest cells. Subsequently, viruses were considered obligate …

Architecture of the bacteriophage lambda tail

C Wang, J Duan, Z Gu, X Ge, J Zeng, J Wang - Structure, 2024 - cell.com
Bacteriophage lambda has a double-stranded DNA genome and a long, flexible, non-
contractile tail encoded by a contiguous block of 11 genes downstream of the head genes …

Identification and genomic analysis of temperate Halomonas bacteriophage vB_HmeY_H4907 from the surface sediment of the Mariana Trench at a depth of 8,900 m

Y Su, W Zhang, Y Liang, H Wang, Y Liu… - Microbiology …, 2023 - Am Soc Microbiol
Viruses play crucial roles in the ecosystem by modulating the host community structure,
mediating biogeochemical cycles, and compensating for the metabolism of host cells …

Co-evolution of gene transfer agents and their alphaproteobacterial hosts

R Kogay, O Zhaxybayeva - Journal of Bacteriology, 2024 - Am Soc Microbiol
Gene transfer agents (GTAs) are enigmatic elements that resemble small viruses and are
known to be produced during nutritional stress by some bacteria and archaea. The …

Archaeal Host Cell Recognition and Viral Binding of HFTV1 to Its Haloferax Host

S Schwarzer, T Hackl, HM Oksanen, TEF Quax - MBio, 2023 - Am Soc Microbiol
Viruses are highly abundant and the main predator of microorganisms. Microorganisms of
each domain of life are infected by dedicated viruses. Viruses infecting archaea are …

A Novel Phage Infecting Alteromonas Represents a Distinct Group of Siphophages Infecting Diverse Aquatic Copiotrophs

R Ma, J Lai, X Chen, L Wang, Y Yang, S Wei, N Jiao… - Msphere, 2021 - Am Soc Microbiol
Bacteriophages play critical roles in impacting microbial community succession both
ecologically and evolutionarily. Although the majority of phage genetic diversity has been …

Exploring host-binding machineries of mycobacteriophages with AlphaFold2

C Cambillau, A Goulet - Journal of Virology, 2023 - Am Soc Microbiol
Although more than 12,000 bacteriophages infecting mycobacteria (mycobacteriophages)
have been isolated so far, there is a knowledge gap on their structure-function relationships …

Loss of the Rhodobacter capsulatus Serine Acetyl Transferase Gene, cysE1, Impairs Gene Transfer by Gene Transfer Agents and Biofilm Phenotypes

D Sherlock, PCM Fogg - Applied and Environmental Microbiology, 2022 - Am Soc Microbiol
Biofilms are widespread in the environment, where they allow bacterial species to survive
adverse conditions. Cells in biofilms are densely packed, and this proximity is likely to …

About bacteriophage tail terminator and tail completion proteins: structure of the proximal extremity of siphophage T5 tail

R Linares, C Breyton - Journal of Virology, 2024 - journals.asm.org
Bacteriophages are viruses infecting bacteria. The vast majority of them bear a tail, allowing
host recognition, cell wall perforation, and DNA injection into the host cytoplasm. Using …

New evidence supports the prophage origin of RcGTA

Y Xu, B Liu, N Jiao, J Liu, F Chen - Applied and Environmental …, 2024 - journals.asm.org
Gene transfer agents (GTAs) are phage-like entities that package and transfer random host
genome fragments between prokaryotes. RcGTA, produced by Rhodobacter capsulatus, is …