May be involved in zinc transport out of the cell. Multimer. Localized on the basolateral surface of the enterocytes. Widely expressed. The protein is detected in duodenum and jejunum but not in ileum and colon. Slightly by zinc in the intestine, but not the liver. Belongs to the cation diffusion facilitator (CDF) transporter (TC 2.A.4) family. SLC30A subfamily.