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    ORAI1

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    For Research Use Only. Not For Clinical Use.


    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]
    Protein class

    Disease related genes, Human disease related genes, Potential drug targets, Transporters

    Predicted location

    Membrane

    Single cell type specificity

    Cell type enhanced (dendritic cells, NK-cells, Theca cells)

    Immune cell specificity

    Low immune cell specificity

    Cell line specificity

    Cell line enhanced (NB-4)

    Interaction

    Interacts with STIM1 and STIM2; this regulates channel activity (PubMed:17905723, PubMed:19249086, PubMed:24351972, PubMed:28219928, PubMed:27185316, PubMed:30481768). Interacts with CALM; this may displace STIM1 and STIM2 and might thereby modulate channel activity (PubMed:23109337). Interacts with CRACR2A/EFCAB4B; the interaction is direct and takes place in absence of Ca(2+) (PubMed:20418871). Forms a complex with CRACR2A/EFCAB4B and STIM1 at low concentration of Ca(2+), the complex dissociates at elevated Ca(2+) concentrations. Interacts with ASPH (isoform 8) (PubMed:22586105). Interacts with SLC35G1 (PubMed:22084111). Interacts with UBQLN1 (PubMed:23307288). Interacts with ADCY8; interaction is calcium store depletion independent; interaction occurs in membrane raft; interaction increases markedly after store depletion; positively regulates SOCE-induced adenylate cyclase activity; contributes to the targeting of ADCY8 to discrete regions of the plasma membrane that are shielded from other calcium events (PubMed:22494970). Interacts with EFHB; the interaction takes place upon Ca(2+)-store depletion (PubMed:30481768). Interacts (via N- and C-termini) with ATP2C2 (via N-terminus); this interaction regulates Ca(2+) influx at the plasma membrane.

    Molecular function

    Calcium channel, Calmodulin-binding, Ion channel

    More Types Infomation
    Related Diseases
    Primary Immunodeficiency Primary Immunodeficiency
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