A single bacterial enzyme i(NHI)bits phage DNA replication

Cell Host Microbe. 2022 Apr 13;30(4):417-419. doi: 10.1016/j.chom.2022.03.025.

Abstract

In this issue of Cell Host & Microbe, Nayeemul Bari et al. discover an anti-phage immune system in bacteria that uses a single enzyme to accomplish the challenging feat of detecting phage DNA and limiting its replication. Unlike CRISPR-Cas and restriction modification (R-M) systems, which use sequence motifs, nuclease-helicase immunity (Nhi) is proposed to target phage-specific replication intermediates.

Publication types

  • Comment

MeSH terms

  • Bacteria / genetics
  • Bacteriophages* / genetics
  • CRISPR-Cas Systems
  • DNA Helicases / genetics
  • DNA Replication

Substances

  • DNA Helicases