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The structural determinants of electrostatics of ion stabilization within EcClC, a ClC-type chloride channel homologue from Escherichia coli, are studied using a continuum dielectric approximation. Specifically, the ion occupancy is investigated in the wild-type protein and a mutant thereof, and the contribution to the electrostatic binding free energy of local and non-local interactions is characterized...
Detailed three-dimensional structures at atomic resolution are essential to understand how voltage-activated K + channels function. The X-ray crystallographic structure of the KvAP channel has offered the first view at atomic resolution of the molecular architecture of a voltage-activated K + channel [Jiang et al. (2003) Nature 423, 33]. In the crystal, the voltage sensors are bound...
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