Abstract
X-ray analysis, circular dichroism, receptor binding and biological potencies of chemically modified insulins suggest that the conformation of the insulin molecule is critical to the formation of both the zinc insulin hexamer and the insulin–receptor complex. Results are consistent with an insulin receptor-binding region including many of the hydrophobic residues important to dimerisation in addition to more polar surface residues. There is a further possibility of formation of an antiparallel sheet structure between the insulin and receptor molecules in the complex similar to that between monomers in the insulin dimer.
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Pullen, R., Lindsay, D., Wood, S. et al. Receptor-binding region of insulin. Nature 259, 369–373 (1976). https://doi.org/10.1038/259369a0
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DOI: https://doi.org/10.1038/259369a0
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