EFCAB4B Proteins

Protein Information

CRACR2A is a Ca(2+)-binding protein that plays a key role in store-operated Ca(2+) entry (SOCE) in T-cells by regulating CRAC channel activation. CRACR2A acts as a cytoplasmic calcium-sensor that facilitates the clustering of ORAI1 and STIM1 at the junctional regions between the plasma membrane and the endoplasmic reticulum upon low Ca(2+) concentration. Further, CRACR2A regulates CRAC channel activation, including translocation and clustering of ORAI1 and STIM1. Upon increase of cytoplasmic Ca(2+) resulting from opening of CRAC channels, CRACR2A dissociates from ORAI1 and STIM1, thereby destabilizing the ORAI1-STIM1 complex.

Synonyms

Ca2+ release-activated Ca2+ (CRAC) channel regulator 2A; calcium release activated channel regulator 2A; calcium release-activated calcium channel regulator 2A; Calcium release-activated channel regulator 2A; CRAC channel regulator 2A; CRAC regulator 2A; Cracr2a; Efcab4b; EF-hand calcium binding domain 4B; EF-hand calcium-binding domain-containing protein 4B; Gm1073; Gm462; RGD1563719