Key result
Mammalian Kir channels provide a favorable electrostatic environment for cations, with specific residues dictating conduction and rectification properties over long distances.
Population
Homology models of four mammalian inward-rectifier potassium channels based on the open-state model of…
Design
Preclinical
Authors
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No immediate clinical implications; extends biophysical models of Kir permeation for future investigation.
Computational modeling reveals that the unfavorable reaction field inside the long pore of mammalian Kir channels is compensated by the static field from protein charges, providing a favorable environment for cation permeation.
Robertson et al. (2008) studied Inward-rectifier potassium (Kir) channel function. Homology modeling and Poisson-Boltzmann calculations was evaluated on Electrostatic free energy of a K+ ion along the pore. Mammalian Kir channels provide a favorable electrostatic environment for cations, with specific residues dictating conduction and rectification properties over long distances.
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