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. 2024 Oct 9;18(1):2402749. doi: 10.1080/19336950.2024.2402749

Figure 5.

Panel A shows the rate constant kOB of TPrA binding for KcvNTS and KcvS. The curve for KcvNTS lies higher than that for KcvS. Both rise with positive voltages. Panel B shows the rate constant kBO of TPrA dissociation for KcvNTS and KcvS. The curve for KcvNTS lies higher than that of KcvS. Both decrease with positive voltages.

Kinetics of the open-state block with TPrA for the two channel isoforms KcvNTS (filled symbols, no cytosolic gate) and KcvS open symbols, with cytosolic gate) (Figure 2a,c). (a) Rate constant kOB of blocker binding and (b) rate constant kBO = koff of blocker release for 0.1 mM cytosolic TPrA. Averages ± sd of three experiments each. The small errors are a typical benefit of Kcv channels.