Seems to form a multimeric complex. Expressed in the germline only. Expressed throughout development (at protein level) (PubMed:22269071). Highly expressed in embryos and L1 stage larvae (at protein level) (PubMed:22269071). No visible phenotype, with no change in growth rate at 20 or 26 degrees Celsius, general morphology or lifespan compared to wild-type (PubMed:22269071). Does not affect brood size, embryonic development or defecation rates of itr-1 (sa73) mutants (PubMed:22269071). No change in development or survival compared to wild-type animals following exposure to ER stress inducing agents such as tunicamycin and dithiothreitol (PubMed:22269071). Belongs to the band 7/mec-2 family. Unlike mammalian homologs, does not play an essential role in the endoplasmic reticulum-associated degradation (ERAD) of inositol 1,4,5-triphosphate receptors (IP3Rs).