The interactions of proinsulin with the insulin-specific receptors were investigated in purified rat liver plasma membranes. These studies were designed to characterize the binding of proinsulin to the insulin receptors, to search for proinsulin-specific receptor sites, and to examine the possibility of proinsulin conversion at the insulin receptor site. Proinsulin was only 3-5% as potent as insulin in binding to insulin receptors. Proinsulin reacted with all of the insulin-specific receptors, and direct binding studies of [125I]porcine proinsulin and [125I]rat proinsulin did not reveal proinsulin-specific receptor sites other than the insulin receptors in rat liver membranes.
Pierre Freychet
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Ciba Foundation Symposium 44 - Research and Medical Practice: Their Interaction | 2008 |
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The Journal of Cell Biology | 1984 |
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La Revue de Médecine Interne | 1984 |
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Journal of Clinical Investigation | 1982 |
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The Journal of biological chemistry | 1981 |
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Meiotic Maturation in Xenopus laevis Oocytes Initiated by Insulin
M El-Etr, S Schorderet-Slatkine, EE Baulieu |
Science | 1979 |
Mechanism of insulin resistance in adipocytes of rats fed a high-fat diet
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Journal of lipid research | 1979 |
Nonsuppressible insulin-like activity (NSILA) from human serum: Recent accomplishments and their physiologic implications
J Zapf, E Rinderknecht, RE Humbel, ER Froesch |
Metabolism | 1978 |
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Biochimica et Biophysica Acta (BBA) - General Subjects | 1978 |
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Biochimica et Biophysica Acta (BBA) - General Subjects | 1977 |
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HD SUMM, H SCHIEMANN, HD VOLKMANN |
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Interactions of polypeptide hormones with cell membrane specific receptors: Studies with insulin and glucagon: Minkowski award lecture 1975
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The American Journal of Digestive Diseases | 1949 |