NCIt definition : Interleukin-2 receptor subunit alpha (272 aa, 31 kDa) is encoded by the human IL2RA
gene. This protein plays a role in interleukin-2-dependent signaling.;
NCIt note : The interleukin 2 (IL2) receptor alpha (IL2RA) and beta (IL2RB) chains, together with
the common gamma chain (IL2RG), constitute the high-affinity IL2 receptor. Homodimeric
alpha chains (IL2RA) result in low-affinity receptor, while homodimeric beta (IL2RB)
chains produce a medium-affinity receptor. Normally an integral-membrane protein,
soluble IL2RA has been isolated and determined to result from extracellular proteolysis.
(LocusLink);