Catecholamine-stimulated guanosine 5'-O-(3-thiotriphosphate) binding to the stimulatory GTP-binding protein of adenylate cyclase: kinetic analysis in reconstituted phospholipid vesicles.
Catecholamine-stimulated guanosine 5'-O-(3-thiotriphosphate) binding to the stimulatory GTP-binding protein of adenylate cyclase: kinetic analysis in reconstituted phospholipid vesicles.
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儿茶酚胺刺激的鸟苷 5-O-(3-硫代三磷酸) 与腺苷酸环化酶的刺激性 GTP 结合蛋白结合:重构磷脂囊泡的动力学分析。
DOI:
10.1021/bi00318a014
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发表时间:
1984
期刊:
影响因子:
2.9
通讯作者:
Ross,EM
中科院分区:
文献类型:
--
作者:
Asano,T;Ross,EM
(GTP7S) to Gs, equivalent to Gs activation by nucleotide, was studied with respect to the stimulation of this process by ß-adrenergic agonists and Mg2+. The rate of GTP7S binding displayed apparent first-order kinetics over a wide range of nucleotide, agonist, and Mg2+ concentrations. In the absence of agonist, the apparent first-order rate constant, Lapp, was 0.17-0.34 min" 1 and did not vary significantly with the con-centration of nucleotide. At 50 mM MgCl2, kapp increased somewhat, to 0.26-0.41 min" 1, and remained invariant with the nucleotide concentration. In the presence of agonist, kapp was dependent on nucleotide concentration. At 10" 9 M GTP7S, the addition of (-)-isoproterenol caused at most a 2-fold stimulation of kapp. However, kapp measured in the presence of isoproterenol increased as an apparently saturable function of the GTP7S concentration, such that isoproterenol caused a 17-fold increase in km at 1 µ GTP7S. The effect of isoproterenol on
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影响因子:
2.9
作者:
A. Tolkovsky;A. Levitzki
通讯作者:
A. Levitzki
DOI:
--
发表时间:
1983
期刊:
European Journal of Biochemistry
影响因子:
--
作者:
A. Gal;S. Braun;D. Feder;A. Levitzki
通讯作者:
A. Levitzki
DOI:
--
发表时间:
1982
影响因子:
11.1
作者:
A. Tolkovsky;S. Braun;A. Levitzki
通讯作者:
A. Levitzki
DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Northup,JK;Smigel,MD;Gilman,AG
通讯作者:
Gilman,AG
DOI:
10.1016/b978-0-12-571138-8.50019-6
发表时间:
1982
期刊:
Recent progress in hormone research
影响因子:
--
作者:
Smigel,MD;Northup,JK;Gilman,AG
通讯作者:
Gilman,AG