3L9W TRANSPORT PROTEIN, POTASSIUM CHANNEL REGULATION, POTASSIUM EFFLUX, GLUTATHIONE, KTN(RCK) DOMAINS, ANTIPORT, CELL INNER MEMBRANE, CELL MEMBRANE, ION TRANSPORT, MEMBRANE, POTASSIUM, POTASSIUM TRANSPORT, TRANSMEMBRANE, TRANSPORT KEFC C-TERMINAL DOMAIN IN COMPLEX WITH KEFF AND GSH