Members of this uncharacterised protein family are found in a number of alphaproteobacteria, including root nodule bacteria, Brucella suis, Caulobacter crescentus, and Rhodopseudomonas palustris. Conserved residues include two well-separated cysteines, suggesting a disulfide bond. The function is unknown.
Jiyao W et al.(2023). "The conserved domain database in 2023.",