Abstract
Membranes of mouse L cells that contain adenylate cyclase [ATP pyrophosphate-lyase (cyclizing), EC 4.6.1.1] but lack beta-adrenergic receptors have been solubilized with Lubrol 12A9. Addition of such adenylate cyclase-containing extracts to beta-adrenergic receptor-replete membranes from adenylate cyclase-deficient S49 lymphoma cells results in the production of a catecholamine-sensitive adenylate cyclase system. The effects of beta-adrenergic agonists and antagonists on the reconstituted system reproduce those that are characteristic of the wild-type S49 lymphoma cell. The uncoupled variant of the S49lymphoma contains adenylate cyclase, but donor extracts from this clone fail to reconstitute the hormone-sensitive enzyme activity when added to adenylate cyclase-deficient membranes. Thus, the uncoupled and adenylate cyclase-deficient variants of the S49 cell are not complementary.
MeSH Terms
Adenylyl Cyclases/metabolism
Binding, Competitive
Catecholamines/pharmacology
Cell Membrane/enzymology
Fluorides/pharmacology
Guanosine Triphosphate/pharmacology
Guanylyl Imidodiphosphate/pharmacology
Isoproterenol/pharmacology
Kinetics
L Cells/enzymology
Mutation
Receptors, Adrenergic/metabolism
Receptors, Adrenergic, beta/metabolism
Chemicals
Catecholamines
Receptors, Adrenergic
Receptors, Adrenergic, beta
Guanylyl Imidodiphosphate
Guanosine Triphosphate
Adenylyl Cyclases
Isoproterenol
Fluorides
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Ross E M
Gilman A G
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20 references, click to expand
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