Ca(2+) release-activated Ca(2+)-like (CRAC-like) channel subunit which mediates Ca(2+) influx and increase in Ca(2+)-selective current by synergy with the Ca(2+) sensor, stim-1. Required for Ca(2+) and IP3-dependent contractile activity of sheath cells and the spermatheca. Affects brood size and somatic cell function (By similarity). Belongs to the Orai family.