This family of proteins are functionally uncharacterised. This protein is found in bacteria and archaea. Proteins in this family are typically between 78 to 102 amino acids in length. It has been suggested that this family of proteins may be chaperones involved in Se or S trafficking in the cell [1].

1: Comparative genomics reveals new candidate genes involved in selenium metabolism in prokaryotes. Lin J, Peng T, Jiang L, Ni JZ, Liu Q, Chen L, Zhang Y; Genome Biol Evol. 2015;7:664-676. PMID:25638258