Regulatory subunit of cAMP-dependent protein kinase inhibits phosphoprotein phosphatase.
Regulatory subunit of cAMP-dependent protein kinase inhibits phosphoprotein phosphatase.
复制标题
cAMP 依赖性蛋白激酶的调节亚基抑制磷蛋白磷酸酶。
DOI:
10.1016/0006-291x(85)90454-1
复制
发表时间:
1985
影响因子:
3.1
通讯作者:
Corbin,JD
中科院分区:
文献类型:
--
作者:
Khatra,BS;Printz,R;Cobb,CE;Corbin,JD
The activity of a purified high molecular weight phosphoprotein phosphatase was inhibited by purified type II cAMP-dependent protein kinase. This effect required cAMP and was obtained in the absence of ATP. The isolated type II regulatory subunits (R-subunits) from several species also inhibited the phosphatase activity in both crude extracts and purified preparations. Half maximal inhibition was observed at 0.06–0.25μM, well within the physiological range of R-subunit concentrations. The inhibitory potency of R-subunit was greater using the thiophosphorylated form. Limited trypsinization of the R-subunit abolished the inhibitory activity. The C-subunit released the bound cAMP when combined with R-subunit, but the phosphatase did not, implying that the inhibited species is a R.cAMP-phosphatase complex. The results suggest that the R-subunit might have at least one physiological role in addition to inhibition of the C-subunit, i.e., inhibition of phosphatase. The latter would occur only when cAMP is elevated.
登录
查看更多内容
影响因子:
3.5
作者:
P. Gergely;G. Bot
通讯作者:
G. Bot
影响因子:
3.5
作者:
B. Khatra;J. Chiasson;Shikama Hisataka;J. Exton;T. Soderling
通讯作者:
T. Soderling
影响因子:
2.9
作者:
L. Ballou;D. Brautigan;E. Fischer
通讯作者:
L. Ballou;D. Brautigan;E. Fischer
DOI:
10.1111/j.1432-1033.1984.tb08521.x
发表时间:
1984-01-01
期刊:
EUROPEAN JOURNAL OF BIOCHEMISTRY
影响因子:
--
作者:
TUNG, HYL;COHEN, P
通讯作者:
COHEN, P
DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Foulkes,JG;Cohen,P;Strada,SJ;Everson,WV;Jefferson,LS
通讯作者:
Jefferson,LS