Multiple effects of N, N' dicyclohexyl carbodiimide on the beta-adrenergic receptor--adenylate cyclase system in frog erythrocytes.

Published

Journal Article

Treatment of frog erythrocytes with N,N' dicyclohexylcarbodiimide (DCCD) leads to a loss of catecholamine stimulated adenylate cyclase activity without any decrease in fluoride or PGE1 stimulated cyclase. However, the concentrations of the reagent which inhibit catecholamine sensitive adenylate cyclase activity are 10 fold lower than those which inhibit specific [3H]dihydroalprenolol ([3H]DHA) beta-adrenergic receptor binding. By contrast binding of the readiolabeled beta-adrenergic agonist [3H]hydroxybenzylisoproterenol ([3H]HBI) is considerably more sensitive than antagonist binding to the effects of DCCD. The data suggest that low concentrations of the reagent may modify the effector portion of the beta-adrenergic receptor leading to functional uncoupling of the beta-receptor adenylate cyclase system. At higher concentrations of the reagent the ligand bidning site of the beta-receptor appears also to be altered.

Full Text

Duke Authors

Cited Authors

  • Pike, LJ; Lefkowitz, RJ

Published Date

  • February 1, 1978

Published In

Volume / Issue

  • 4 / 1

Start / End Page

  • 27 - 34

PubMed ID

  • 205559

Pubmed Central ID

  • 205559

International Standard Serial Number (ISSN)

  • 0095-1544

Language

  • eng