the human high-affinity receptor for interleukin 2 ( il-2 ) has been proposed as being a membrane complex composed of at least two distinct polypeptide chains : p55 ( alpha chain ) , recognized by the anti-tac monoclonal antibody ( mab ) , and p75 ( beta chain ) , both of which are capable of binding il-2 .
C0086418
human
C0021756
il-2