The insulin-like growth factor II receptor is phosphorylated by a tyrosine kinase in adipocyte plasma membranes.


Incorporation of 32P from [gamma-32P]ATP into tyrosine residues of the insulin-like growth factor (IGF)-II receptor was observed in a Triton X-100-insoluble fraction of rat adipocyte plasma membranes. IGF-II receptor phosphorylation proceeded to a stoichiometry of approximately 0.5 mol of phosphate/IGF-II binding site after 10 min of incubation at 4 degrees… (More)


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