Anti-HOX1 antibodies enable researchers to detect and measure the HOX1 antigen in biological samples. This target is a reported synonym of the HOXA3 gene, which encodes homeobox A3. This protein is known to function in angiogenesis and cartilage development, among other biological roles. The human version of HOX1 has a canonical amino acid length of 443 residues and a protein mass of 46.4 kilodaltons. It is reported to be localized in the nucleus of cells. HOX1 is a member of the Antp homeobox protein family.