Family in the SLOG superfamily, fused to or operonically associating with SLATT domain in diverse prokaryotes. Predicted to function as ligand sensor in conjunction with the SLATT transmembrane domain [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