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. 2021 Sep 8;78(19-20):6645–6667. doi: 10.1007/s00018-021-03933-4

Table 2.

Overview of the typical CRAC channel hallmarks of STIM1 mutants

Without STIM1 STIM1 STIM1 Δα2 STIM1 F394A STIM1 F394H STIM1 F394D
Vrev [mV]
 Orai1 59.22 ± 5.92 43.85 ± 4.35 57.00 ± 5.59 55.60 ± 7.45
 Orai1 P245L 33.4 ± 1.88 40.16 ± 5.3 46.52 ± 9.81 41.39 ± 5.69 40.05 ± 9.39 43.27 ± 1.98
 Orai1 V102A 32.58 ± 1.85 49.31 ± 3.31 31.63 ± 4.71 46.70 ± 10.98 58.10 ± 2.97 27.41 ± 4.83
FCDI
 Orai1 P245L Yes No Yes No No
IDVF:ICa2+
 Orai1 P245L 0.5 5.5 2.7 2.1 0.6 2.2

Table summarizes the Vrev, FCDI and the ratio IDVF:ICa2+ of Orai1 and Orai1 P245L currents in the absence of STIM1 and the presence of STIM1, STIM1 Δα2, STIM1 F394A, STIM1 F394H and STIM1 F394D. Moreover, the Vrev of Orai1 V102A currents in the absence of STIM1 and the presence of STIM1, STIM1 Δα2, STIM1 F394A, STIM1 F394H and STIM1 F394D are listed