External Ids for STIM2 Gene
Previous GeneCards Identifiers for STIM2 Gene
This gene is a member of the stromal interaction molecule (STIM) family and likely arose, along with related family member STIM1, from a common ancestral gene. The encoded protein functions to regulate calcium concentrations in the cytosol and endoplasmic reticulum, and is involved in the activation of plasma membrane Orai Ca(2+) entry channels. This gene initiates translation from a non-AUG (UUG) start site. A signal peptide is cleaved from the resulting protein. Multiple transcript variants result from alternative splicing. [provided by RefSeq, Dec 2009]
GeneCards Summary for STIM2 Gene
STIM2 (Stromal Interaction Molecule 2) is a Protein Coding gene. Among its related pathways are Calcium signaling pathway and Ca, cAMP and Lipid Signaling. GO annotations related to this gene include calcium ion binding and store-operated calcium channel activity. An important paralog of this gene is STIM1.
UniProtKB/Swiss-Prot for STIM2 Gene
Plays a role in mediating store-operated Ca(2+) entry (SOCE), a Ca(2+) influx following depletion of intracellular Ca(2+) stores. Functions as a highly sensitive Ca(2+) sensor in the endoplasmic reticulum which activates both store-operated and store-independent Ca(2+)-influx. Regulates basal cytosolic and endoplasmic reticulum Ca(2+) concentrations. Upon mild variations of the endoplasmic reticulum Ca(2+) concentration, translocates from the endoplasmic reticulum to the plasma membrane where it probably activates the Ca(2+) release-activated Ca(2+) (CRAC) channels ORAI1, ORAI2 and ORAI3. May inhibit STIM1-mediated Ca(2+) influx.
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.