Anti-CT5.3 antibodies enable researchers to detect and measure the CT5.3 antigen in biological samples. This target is a reported synonym of the ZNF165 gene, which encodes zinc finger protein 165. This protein is known to function in the regulation of transcription, among other biological roles. The human version of CT5.3 has a canonical amino acid length of 485 residues and a protein mass of 55.8 kilodaltons. It is reported to be localized in the nucleus of cells. CT5.3 is a member of the Krueppel C2H2-type zinc-finger protein family.