Fig. 2.
ARC channel activity is selectively inhibited by an antibody targeted to the exposed extracellular N-terminal of plasma membrane STIM1. (A) Currents via CRAC channels and ARC channels recorded following incubation with a control IgG2 antibody (IgG – green) compared to those recorded following an identical incubation with an N-terminal STIM1 antibody (Ab – brown). (B) Representative current-voltage relationships of the currents through the ARC channels following incubation with the relevant antibodies. All incubations were for 30-40 minutes at room temperature and at an antibody concentration of 5 μg ml−1. Other details as in Fig. 1. Data redrawn from [21].