C7orf19, CAP binding protein complex interacting protein 2, CBCIP 2, CBCIP2, Chromosome 7 open reading frame 19, FLJ12474, FLJ14733, FLJ44818, H_NH0514P08.8, Orai 2, ORAI calcium release activated calcium modulator 2, Protein orai 2, TMEM 142B, TMEM142B, Transmembrane protein 142B.
Orai2 is a 254 amino acid multi-pass membrane protein that belongs to the orai family of proteins. Localizing to the plasma membrane, Orai2 plays an important role in store-operated calcium (SOC) entry, a process involving Ca2+ influx and replenishment of Ca2+ stores formerly emptied through the action of inositol 1,4,5-trisphosphate production and other Ca2+ mobilizing agents. CRAC channels are responsible for medi-ating calcium influx in T-cells and play an important role in the immune response. Orai2 specifically increases the Ca2+-selective current through coaction with the Ca2+ sensor Stim1.
