...dimers and translocation to ER/plasmalemmal junctional regions, where they physically interact with store-operated channels (SOCs)
                                    to induce SOCE. Despite high homology, the two isoforms, STIM1 and STIM2, have subtly distinct functions. STIM1 seems to be
                                    the main SOC-activating isoform, while STIM2,  ~~~