Figure 7.
Variation in P mod with increasing P o. The figure shows current fluctuations of a single sheep cardiac RyR channel at a holding potential of +40 mV with 700 nM 21-amino-9α-hydroxy- ryanodine in the solution at the cytosolic face of the channel. Channel P o was increased by the addition of EMD 41000 to the solution at the cytosolic face of the channel (see text for details). Note the excess noise of the modified conductance state decreases as channel P o increases. C, closed; M, modified; O, open.