Aliases for ORAI1 Gene
External Ids for ORAI1 Gene
Previous HGNC Symbols for ORAI1 Gene
Previous GeneCards Identifiers for ORAI1 Gene
The protein encoded by this gene is a membrane calcium channel subunit that is activated by the calcium sensor STIM1 when calcium stores are depleted. This type of channel is the primary way for calcium influx into T-cells. Defects in this gene are a cause of immune dysfunction with T-cell inactivation due to calcium entry defect type 1 (IDTICED1). [provided by RefSeq, Sep 2011]
GeneCards Summary for ORAI1 Gene
ORAI1 (ORAI Calcium Release-Activated Calcium Modulator 1) is a Protein Coding gene. Diseases associated with ORAI1 include Immunodeficiency 9 and Myopathy, Tubular Aggregate, 2. Among its related pathways are Cardiac conduction and Aldosterone synthesis and secretion. Gene Ontology (GO) annotations related to this gene include identical protein binding and store-operated calcium channel activity. An important paralog of this gene is ORAI2.
UniProtKB/Swiss-Prot for ORAI1 Gene
Ca(2+) release-activated Ca(2+) (CRAC) channel subunit which mediates Ca(2+) influx following depletion of intracellular Ca(2+) stores and channel activation by the Ca(2+) sensor, STIM1 (PubMed:16582901, PubMed:16645049, PubMed:16733527, PubMed:16766533, PubMed:16807233, PubMed:19249086, PubMed:23307288, PubMed:24351972, PubMed:24591628, PubMed:28219928). CRAC channels are the main pathway for Ca(2+) influx in T-cells and promote the immune response to pathogens by activating the transcription factor NFAT (PubMed:16582901).
STIM-Orai channels have recently been identified as the underlying molecular mechanism of store-operated calcium entry (SOCE). STIM (stromal interaction molecule) proteins are ER Ca2+ sensors. Orai proteins are STIM binding partners that form the channel pore.