6p8r
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proteopedia linkproteopedia linkStructure of P. aeruginosa ATCC27853 HORMA2
Structural highlights
FunctionCAP7_PSEAI CBASS (cyclic oligonucleotide-based antiphage signaling system) provides immunity against bacteriophage. The CD-NTase protein synthesizes cyclic nucleotides in response to infection; these serve as specific second messenger signals. The signals activate a diverse range of effectors, leading to bacterial cell death and thus abortive phage infection. A type III-C(AAA) CBASS system (PubMed:32839535).[1] [2] The sensor protein for this CBASS system. Binds to a closure peptide (consensus Glu-Val-Met-Glu-Phe-Asn-Pro), which allows it to activate CdnD for second messenger synthesis.[3] References
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