Ready-to-use ELISA kits are available for the detection of H6 homeobox 3, an alias of the protein, H6 family homeobox 3. The official gene symbol is HMX3. The protein, with a mass of 37.8 kDa and length of 357 residues, is reported to be nuclear. It is a member of the HMX homeobox family and may be known by other names, including: NKX5.1, NKX-5.1, homeobox protein H6 family member 3, homeobox (H6 family) 3, homeo box (H6 family) 3, and homeobox protein HMX3.