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Crystal structures of membrane transporters with bound lipid. a, dDAT crystal structure (4XP4) bound to cholesterol at the interface of TM1a, 5 and 7 and a cholesteryl hemisuccinate bound at TM2, 7 and 11. b, POPG molecules found at the interface of the BetP trimer (4C7R). A third molecule in the trimer was removed for clarity. Head group of the lipid is in close proximity to gating helices.
