title: Reconstitution of catecholamine-sensitive adenylate cyclase activity: interaction of components following cell-cell and membrane-cell fusion.
abstract: Heterokaryons formed by the fusion of adenylate cyclase-deficient S49 cells and beta-adrenergic receptor-deficient B82 cells in the presence of cycloheximide display a catecholamine-sensitive adenylate cyclase activity. Similar complementation can be observed when receptor-replete membranes from the cyclase-deficient cell are fused with intact B82 cells. Using the cell fusion technique it can be demonstrated that the uncoupled S49 cell variant has a functional beta-adrenergic receptor but that this variant and the adenylate cyclase-deficient variant are not complementary. Hypothetically, both clones may share a common defect in regulatory components of adenylate cyclase or both may lack a specific coupling factor.
mesh_terms: D000262:Adenylyl Cyclases / Q000378:metabolism*; D000818:Animals; D002395:Catecholamines / Q000494:pharmacology*; D002459:Cell Fusion; D002460:Cell Line; D002462:Cell Membrane / Q000378:metabolism; D002478:Cells, Cultured; D004789:Enzyme Activation / Q000187:drug effects; D006160:Guanosine Triphosphate / Q000494:pharmacology; D007545:Isoproterenol / Q000494:pharmacology; D051379:Mice; D011433:Propranolol / Q000494:pharmacology; D011458:Prostaglandins E / Q000494:pharmacology
chemical_list: D002395:Catecholamines; D011458:Prostaglandins E; D006160:Guanosine Triphosphate; D011433:Propranolol; D000262:Adenylyl Cyclases; D007545:Isoproterenol