Cyclic GMP-AMP synthase

UniProtKB accession:  Q9KVG7

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UniProtKB description:  Cyclic nucleotide synthase (second messenger synthase) of a CBASS antivirus system (PubMed:22500802, PubMed:25131990). CBASS (cyclic oligonucleotide-based antiphage signaling system) provides immunity against bacteriophages. The CD-NTase protein (DncV, this 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 (PubMed:31533127, PubMed:32544385, PubMed:36755092). A type II-A(GA) CBASS system (PubMed:32839535).