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TitlePhage proteins target and co-opt host ribosomes immediately upon infection.
Journal, issue, pagesNat Microbiol, Vol. 9, Issue 3, Page 787-800, Year 2024
Publish dateMar 4, 2024
AuthorsMilan Gerovac / Kotaro Chihara / Laura Wicke / Bettina Böttcher / Rob Lavigne / Jörg Vogel /
PubMed AbstractBacteriophages must seize control of the host gene expression machinery to replicate. To bypass bacterial anti-phage defence systems, this host takeover occurs immediately upon infection. A general ...Bacteriophages must seize control of the host gene expression machinery to replicate. To bypass bacterial anti-phage defence systems, this host takeover occurs immediately upon infection. A general understanding of phage mechanisms for immediate targeting of host transcription and translation processes is lacking. Here we introduce an integrative high-throughput approach to uncover phage-encoded proteins that target the gene expression machinery of Pseudomonas aeruginosa immediately upon infection with the jumbo phage ΦKZ. By integrating biochemical, genetic and structural analyses, we identify an abundant and conserved phage factor ΦKZ014 that targets the large ribosomal subunit by binding the 5S ribosomal RNA, and rapidly promotes replication in several clinical isolates. ΦKZ014 is among the earliest ΦKZ proteins expressed after infection and remains bound to ribosomes during the entire translation cycle. Our study provides a strategy to decipher molecular components of phage-mediated host takeover and argues that phage genomes represent an untapped discovery space for proteins that modulate the host gene expression machinery.
External linksNat Microbiol / PubMed:38443577 / PubMed Central
MethodsEM (single particle)
Resolution3.0 Å
Structure data

16566

8cd1

EMDB-16566: 70S-PHIKZ014 PHIKZ phage protein occupied ribosome
PDB-8cd1: 70S-PHIKZ014
Method: EM (single particle) / Resolution: 3.0 Å

Chemicals

ChemComp-MG:
Unknown entry

Source
  • Pseudomonas aeruginosa PAO1H2O (bacteria)
  • pseudomonas aeruginosa pao1 (bacteria)
  • pseudomonas phage phikz (virus)
KeywordsRIBOSOME / PHIKZ / Phage / hijacked / bacterial / Pseudomonas / PHIKZ014 / 5S rRNA

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