title: Orai1, STIM1, and their associating partners.
abstract: Store-operated Ca(2+) (SOC) entry is one of the major mechanisms to raise intracellular Ca(2+) concentration in non-excitable cells. Ca(2+)-release-activated Ca(2+) (CRAC) channels are a subtype of SOC channels that are extensively characterized in immune cells. Identification of STIM1 as an endoplasmic reticulum Ca(2+) sensor and Orai1 as the pore subunit has dramatically advanced the molecular understanding of CRAC channels. Recent efforts have focused on understanding the physiological aspects of CRAC channels at an organism level using transgenic animal models and at a molecular level using electrophysiological and biochemical tools. In this review, we summarize our current understanding of the interacting partners of Orai and STIM proteins in the regulation of CRAC channel activity and other non-CRAC channel-related functions.
authors.affiliation: Department of Physiology, David Geffen School of Medicine at UCLA, Los Angeles, CA 90095, USA. ssrikanth@mednet.ucla.edu
authors.forename: Sonal
authors.initials: S
authors.lastname: Srikanth
authors.forename: Yousang
authors.initials: Y
authors.lastname: Gwack
mesh_terms: D000818:Animals; D015220:Calcium Channels / Q000737:chemistry / Q000276:immunology / Q000378:metabolism*; D020013:Calcium Signaling; D002135:Calcium-Binding Proteins / Q000378:metabolism; D000252:Calcium-Transporting ATPases / Q000378:metabolism; D002147:Calmodulin / Q000378:metabolism; D004721:Endoplasmic Reticulum / Q000378:metabolism; D006801:Humans; D008562:Membrane Glycoproteins / Q000737:chemistry / Q000276:immunology / Q000378:metabolism*; D008954:Models, Biological; D046912:Multiprotein Complexes; D013601:T-Lymphocytes / Q000276:immunology / Q000378:metabolism
chemical_list: D015220:Calcium Channels; D002135:Calcium-Binding Proteins; D002147:Calmodulin; D008562:Membrane Glycoproteins; D046912:Multiprotein Complexes; D000252:Calcium-Transporting ATPases