<p>Members of this protein family are found exclusively in genomes that contain putative set of labile selenium-dependent enzyme accessory proteins as well as homologues of a labile selenium-dependent purine hydroxylase. A mutant in this gene in <taxon tax_id="562">Escherichia coli</taxon> had improved stationary phase viability. The function of this protein is unknown.</p> Putative selenium metabolism protein SsnA