Species specificity of insulin binding and insulin receptor protein tyrosine kinase activity

R. Cordera, G. Andraghetti, R. Gherzi, L. Adezati, A. Montemurro, R. Lauro, I. D. Goldfine, R. De Pirro

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of monoclonal anti-insulin receptor antibody MA 10 on [125I]insulin binding and on insulin receptor protein tyrosine kinase activity was investigated in human and rat tissues. It was observed that MA 10 inhibits insulin binding to human, but not rat, tissues while inhibiting insulin-stimulated receptor autophosphorylation and protein tyrosine kinase activity in both human and rat tissues. These data suggest that MA 10 is directed against a region of the insulin receptor that is in between the insulin-binding domain and the β-subunit and that in human, but not rat, tissues, this region is involved in insulin binding.

Original languageEnglish
Pages (from-to)2007-2010
Number of pages4
JournalEndocrinology
Volume121
Issue number6
Publication statusPublished - 1987

ASJC Scopus subject areas

  • Endocrinology
  • Endocrinology, Diabetes and Metabolism

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