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Structural changes in KstR due to ligand binding. A, superposition of monomer structures of ligand-free KstR (green; form II, dimer 1) and KstR in complex with 3OCh-CoA (blue). The movement of the DBD relative to the α8-α9 dimer interface is shown by red arrows. B, the ligand-induced movements of the KstR monomer are coordinated with a change in the conformation of Trp-164 (shown as a stick model).
