Background:
Acts as a regulator of store-operated Ca2+ entry (SOCE) at junctional sites that connect the endoplasmic reticulum (ER) and plasma membrane (PM), called ER-plasma membrane (ER-PM) junction or cortical ER (PubMed:26322679, PubMed:26644574).SOCE is a Ca2+ influx following depletion of intracellular Ca2+ stores (PubMed:26322679).Acts by interacting with STIM1, promoting STIM1 conformational switch (PubMed:26322679).Involved in STIM1 relocalization to ER-PM junctions (PubMed:26644574).Contributes to the maintenance and reorganization of store-dependent ER-PM junctions (PubMed:26644574).