Conserved genome contexts in NAD+-derived nucleotide-activated effector systems predict a function as a previously-uncharacterised nucleotide synthetase [1].

1: Identification of Uncharacterized Components of Prokaryotic Immune Systems and Their Diverse Eukaryotic Reformulations. Burroughs AM, Aravind L; J Bacteriol. 2020; [Epub ahead of print] PMID:32868406