Cyclic AMP-AMP-AMP synthase

UniProtKB accession:  P0DTF7

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UniProtKB description:  Cyclic nucleotide synthase (second messenger synthase) of a CBASS antivirus system (PubMed:31932165). 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).