Ready-to-use ELISA kits are available for the detection of ETI-1, an alias of the protein, solute carrier family 39 member 2. The official gene symbol is SLC39A2. The protein, with a mass of 32.7 kDa and length of 309 residues, is reported to be membrane-associated. It is a member of the ZIP transporter (TC 2.A.5) family and may be known by other names, including: ZIP-2, ETI-1, zinc uptake transporter 2, solute carrier family 39 (zinc transporter) member 2, Zrt- and Irt-like protein 2, and zinc transporter ZIP2.