Formation of a Chloride-conducting State in the Maltose ATP-binding Cassette (ABC) Transporter.

Abstract excerpt

ATP-binding cassette transporters use an alternating access mechanism to move substrates across cellular membranes. This mode of transport ensures the selective passage of molecules while preserving membrane impermeability. The crystal structures of MalFGK2, inward- and outward-facing, show that the transporter is sealed against ions and small molecules. It has yet to be determined whether membrane impermeability...

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