Induced by potassium chromate (K(2)Cr(2)O(7)) and cadmium chloride (CdCl(2)) (PubMed:22985357). Induction by Cr and Cd requires sigF (PubMed:22985357). Probably part of the CCNA_03001 to CCNA_02999 operon. Not essential even when cells grown in the presence of its inducers dichromate or cadmium. Belongs to the UPF0276 family.