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. 2011 Feb 14;6(2):e17078. doi: 10.1371/journal.pone.0017078

Figure 5. Model of the bidirectional regulation of HCN2 gating by cGMP.

Figure 5

cGMP shifts the voltage-dependence of HCN2 activation to more positive voltage (+ΔV) via direct interaction with the CNBD of HCN2 and induces a hyperpolarizing shift (−ΔV) by activating cGKII that is bound to the channel.