Abstract
Fluorescent derivatives of insulin and epidermal growth factor bound to 3T3 mouse fibroblasts are mobile on the cell surface, with similar diffusion coefficients, D approximately (3--5) x 10(-10) cm2/sec at 23 degrees C. Increasing the temperature to 37 degrees C results in rapid receptor immobilization. The immobilization is attributed to aggregation of hormone-receptor complexes, their internalization, or a combination of both processes.
MeSH Terms
Azides/pharmacology
Binding, Competitive
Cell Line
Cell Membrane/metabolism
Epidermal Growth Factor/metabolism
Fibroblasts/metabolism
Fluorescent Dyes
Insulin/metabolism
Kinetics
Peptides/metabolism
Receptor, Insulin/metabolism
Receptors, Cell Surface/metabolism
Chemicals
Azides
Fluorescent Dyes
Insulin
Peptides
Receptors, Cell Surface
Epidermal Growth Factor
Receptor, Insulin
Authors & Affiliations
5 authors, click to expand affiliations / ORCID
Schlessinger J
Shechter Y
Cuatrecasas P
Willingham M C
Pastan I
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27 references, click to expand
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