| Literature DB >> 6905765 |
W Krawietz, K Werdan, E Erdmann.
Abstract
Experiments have been carried out to characterize the influence of the positive inotropic trace element vanadium (used as Na3VO4) on beta-adrenergic receptor coupled adenylate cyclase activity from human myocardium. Na3VO4 (10(4)M) stimulates basal activity as well as isoprenaline (10 microM)- and Mg2+ (20 mM) activated enzyme activity 1.5-2.4-fold. In contrast, adenylate cyclase activity in the presence of maximally activating concentrations of Gpp(NH)p (10 microM) cannot be further increased by Na3VO4. The results confirm the assumption (5) that vanadate stimulates adenylate cyclase by interacting with the nucleotide-binding site of this enzyme.Entities:
Mesh:
Substances:
Year: 1980 PMID: 6905765 DOI: 10.1007/bf01908407
Source DB: PubMed Journal: Basic Res Cardiol ISSN: 0300-8428 Impact factor: 17.165