Background：The product of this gene is a calcium-binding protein localized in the endoplasmic reticulum （ER） and it is involved in such ER functions as protein folding and sorting. This protein belongs to a family of multiple EF-hand proteins （CERC） that include reticulocalbin, ERC-55, and Cab45 and the product of this gene. Alternatively spliced transcript variants encoding different isoforms have been identified
