Anti-HD1 antibodies enable researchers to detect and measure the HD1 antigen in biological samples. This target is a reported synonym of the HDAC1 gene, which encodes histone deacetylase 1. This protein is known to function in chromatin organization and chromatin remodeling, among other biological roles. The human version of HD1 has a canonical amino acid length of 482 residues and a protein mass of 55.1 kilodaltons. It is reported to be localized in the nucleus of cells and widely expressed in many tissue types. HD1 is a member of the Histone deacetylase protein family.