8ji9

From Proteopedia

Crystal Structure of cas7 and AcrIE10 complex

Structural highlights

8ji9 is a 4 chain structure with sequence from Klebsiella pneumoniae. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.54Å
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

A0A081LSX6_KLEPN

Publication Abstract from PubMed

The Klebsiella pneumoniae (K. pneumoniae, Kp) populations carrying both resistance-encoding and virulence-encoding mobile genetic elements (MGEs) significantly threaten global health. In this study, we identified a new anti-CRISPR gene (acrIE10) on a conjugative plasmid with self-target sequence in K. pneumoniae with type I-E* CRISPR-Cas system. AcrIE10 interacts with the Cas7* subunit of K. pneumoniae I-E* CRISPR-Cas system. The crystal structure of the AcrIE10-KpCas7* complex suggests that AcrIE10 suppresses the I-E* CRISPR-Cas by binding directly to Cas7 to prevent its hexamerization, thereby preventing the surveillance complex assembly and crRNA loading. Bioinformatic and functional analyses revealed that AcrIE10 is functionally widespread across diverse species. Our study reports a novel anti-CRISPR and highlights its potential role in spreading resistance and virulence among pathogens.

A new anti-CRISPR gene promotes the spread of drug-resistance plasmids in Klebsiella pneumoniae.,Jiang C, Yu C, Sun S, Lin J, Cai M, Wei Z, Feng L, Li J, Zhang Y, Dong K, Guo X, Qin J, Zhang Y Nucleic Acids Res. 2024 Jun 18:gkae516. doi: 10.1093/nar/gkae516. PMID:38888121^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Jiang C, Yu C, Sun S, Lin J, Cai M, Wei Z, Feng L, Li J, Zhang Y, Dong K, Guo X, Qin J, Zhang Y. A new anti-CRISPR gene promotes the spread of drug-resistance plasmids in Klebsiella pneumoniae. Nucleic Acids Res. 2024 Jun 18:gkae516. PMID:38888121 doi:10.1093/nar/gkae516