1R3J: Potassium Channel Kcsa-Fab Complex In High Concentration Of
reference: The occupancy of ions in the K+ selectivity filter: charge balance and coupling of ion binding to a protein conformational change underlie high conduction rates., Zhou Y, MacKinnon R, J Mol Biol 2003 Nov 7;333(5):965-75. PMID: 14583193

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