Anti-TCR zeta chain antibodies are protein reagents that detect specific antigens. The TCR zeta chain antigen is another term for the human protein CD247 molecule, encoded by the CD247 gene. The protein is known to be a part of the TCR-CD3 complex present on T-lymphocyte cell surface that plays an essential role in adaptive immune response. Canonically, it has an amino acid length of 164 residues and a mass of 18.7 kilodaltons. Its subcellular localization is in the cell membrane and it is expressed in the spleen, lymph node, endometrium, bone marrow, and appendix. The TCR zeta chain protein is a member of the CD3Z/FCER1G protein family. Other alias names for TCR zeta chain include CD3-ZETA, CD3-ZETA, and CD3H. Western Blot is the most common application for the TCR zeta chain antibodies listed below. ELISA and Immunohistochemistry are also common applications.