A. Mean LFQ intensities of interaction candidates of three replicates each of pull-down experiments of HA-tagged STIM1A-mCherry and STIM1-mCherry after expression and TG activation in HEKS1/S2-/-cells. Eluates were analyzed via mass spectrometry and only hits with significant differential scores (p-values <0.05, Student T-test) are shown. 