NM_001303618
NM_001303619
NM_006566
NM_001039148
NM_001039149
NM_178687
NP_001290547
NP_001290548
NP_006557
CD226 (Cluster of Differentiation 226), PTA1 (outdated term, 'platelet and T cell activation antigen 1') or DNAM-1 (DNAX Accessory Molecule-1) is a protein that in humans is encoded by the CD226 gene which is located on chromosome 18q22.3.