NMR studies of the free and DNA-bound states of the lac represser headpiece show that formation of the hinge helix requires protein–protein interactions and occurs only when the represser binds to the full lac operator.
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Ligand-specific changes in conformational flexibility mediate long-range allostery in the lac repressor
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Spronk, C., Slijper, M., van Boom, J. et al. Formation of the hinge helix in the lac represser is induced upon binding to the lac operator. Nat Struct Mol Biol 3, 916–919 (1996). https://doi.org/10.1038/nsb1196-916
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DOI: https://doi.org/10.1038/nsb1196-916
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