NUDIX domain with distinctive features in the substrate-interacting region observed associating with SMODS domain synthetases. Predicted to cleave nucleotide diphosphate bonds, potentially to regulate flux through the pore formed by fused 2TM module [1].

1: Comparative genomic analyses reveal a vast, novel network of nucleotide-centric systems in biological conflicts, immunity and signaling. Burroughs AM, Zhang D, Schaffer DE, Iyer LM, Aravind L; Nucleic Acids Res. 2015;43:10633-10654. PMID:26590262