A member of the nucleic acid/nucleotide deaminase superfamily prototyped by Bdellovibrio Bd3614 [1]. They are typified by a distinct N-terminal globular domain. The Bdellovibrio version occurs in a predicted operon with a 23S rRNA G2445-modifying methylase suggesting that it might be involved in RNA editing [1].

1: Evolution of the deaminase fold and multiple origins of eukaryotic editing and mutagenic nucleic acid deaminases from bacterial toxin systems. Iyer LM, Zhang D, Rogozin IB, Aravind L; Nucleic Acids Res. 2011; [Epub ahead of print] PMID:21890906