The role of distal S6 hydrophobic residues in the voltage-dependent gating of CaV2.3 channels.


The hydrophobic locus VAVIM is conserved in the S6 transmembrane segment of domain IV (IVS6) in Ca(V)1 and Ca(V)2 families. Herein we show that glycine substitution of the VAVIM motif in Ca(V)2.3 produced whole cell currents with inactivation kinetics that were either slower (A1719G approximately V1720G), similar (V1718G), or faster (I1721G approximately… (More)


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