A bacterial immunity protein directly senses two disparate phage proteins

T Zhang, A Cepauskas, A Nadieina, A Thureau… - Nature, 2024 - nature.com
Eukaryotic innate immune systems use pattern recognition receptors to sense infection by
detecting pathogen-associated molecular patterns, which then triggers an immune …

Conformational change as a mechanism for toxin activation in bacterial toxin-antitoxin systems

V Sanchez-Torres, HJ Hwang, TK Wood - Journal of Virology, 2024 - journals.asm.org
Toxin/antitoxin (TA) systems are present in nearly every prokaryotic genome and play the
important physiological roles of phage inhibition by reducing metabolism (this includes …

Anti-viral defence by an mRNA ADP-ribosyltransferase that blocks translation

CN Vassallo, CR Doering, MT Laub - Nature, 2024 - nature.com
Host–pathogen conflicts are crucibles of molecular innovation,. Selection for immunity to
pathogens has driven the evolution of sophisticated immunity mechanisms throughout …

Toxic small alarmone synthetase FaRel2 inhibits translation by pyrophosphorylating tRNAGly and tRNAThr

T Kurata, M Takegawa, T Ohira, EA Syroegin… - Science …, 2024 - science.org
Translation-targeting toxic small alarmone synthetases (toxSAS) are effectors of bacterial
toxin-antitoxin systems that pyrophosphorylate the 3′-CCA end of transfer RNA (tRNA) to …

Bacteria renew an OLD protein to cleave host tRNAs and block phage translation

KD Gibbs, M LeRoux - Cell Host & Microbe, 2024 - cell.com
Anti-phage defenses must rapidly sense and respond to diverse viruses. A recent pair of
papers in Nature reveal via structural and functional assays how the PARIS defense system …

Chaperones help TACkle phage infection

SR Margolis, AJ Meeske - Cell Host & Microbe, 2024 - Elsevier
Bacteria have evolved anti-viral defenses, but the mechanisms of sensing and stopping
infection are still under investigation. In this issue of Cell Host & Microbe, Mets, Kurata, Ernits …