Everything OLD is new again: How structural, functional, and bioinformatic advances have redefined a neglected nuclease family.
Mol Microbiol
; 120(2): 122-140, 2023 08.
Article
em En
| MEDLINE
| ID: mdl-37254295
ABSTRACT
Overcoming lysogenization defect (OLD) proteins are a conserved family of ATP-powered nucleases that function in anti-phage defense. Recent bioinformatic, genetic, and crystallographic studies have yielded new insights into the structure, function, and evolution of these enzymes. Here we review these developments and propose a new classification scheme to categorize OLD homologs that relies on gene neighborhoods, biochemical properties, domain organization, and catalytic machinery. This taxonomy reveals important similarities and differences between family members and provides a blueprint to contextualize future in vivo and in vitro findings. We also detail how OLD nucleases are related to PARIS and Septu anti-phage defense systems and discuss important mechanistic questions that remain unanswered.
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Base de dados:
MEDLINE
Assunto principal:
Bactérias
/
Bacteriófagos
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Esterases
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article