GTP gamma S-dependent regulation of smooth muscle contractile elements.
GTP gamma S-dependent regulation of smooth muscle contractile elements.
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GTP γ S 依赖性平滑肌收缩元件的调节。
DOI:
10.1152/ajpcell.1992.262.2.c405
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发表时间:
1992
期刊:
影响因子:
--
通讯作者:
Stull,JT
中科院分区:
文献类型:
--
作者:
Kubota,Y;Nomura,M;Kamm,KE;Mumby,MC;Stull,JT
Guanosine 5'-O-(3-thiotriphosphate) (GTP gamma S) increases the sensitivity of the contractile response to activation by Ca2+ in permeabilized tracheal smooth muscle. Increased tension was associated with a proportional increase in myosin light chain phosphorylation. The site of phosphorylation was determined to be serine-19, which corresponds to the site rapidly phosphorylated by myosin light chain kinase. GTP gamma S did not affect the contraction induced by the protein phosphatase inhibitor okadaic acid but did enhance contraction produced by Ca(2+)-independent myosin light chain kinase. In tracheal homogenates Ca(2+)-dependent myosin light chain kinase activity was not affected by GTP gamma S; however, dephosphorylation of 32P-labeled heavy meromyosin by phosphatase was inhibited. Thus GTP gamma S may increase the Ca2+ sensitivity of contractile elements in tracheal smooth muscle by inhibition of protein phosphatase activity toward myosin light chain.
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影响因子:
4.8
作者:
D. Werth;J. Haeberle;D. Hathaway
通讯作者:
D. Hathaway
影响因子:
20.1
作者:
T. Fujiwara;T. Itoh;Y. Kubota;H. Kuriyama
通讯作者:
H. Kuriyama
DOI:
--
发表时间:
1989
期刊:
Journal of Physiology
影响因子:
--
作者:
T. Fujiwara;T. Itoh;Y. Kubota;H. Kuriyama
通讯作者:
H. Kuriyama
DOI:
--
发表时间:
1986
期刊:
Journal of Physiology
影响因子:
--
作者:
T. Itoh;Y. Kanmura;H. Kuriyama;K. Sumimoto
通讯作者:
K. Sumimoto
DOI:
10.1016/0006-291x(89)92189-x
发表时间:
1989-03-31
影响因子:
3.1
作者:
ISHIHARA, H;MARTIN, BL;HARTSHORNE, DJ
通讯作者:
HARTSHORNE, DJ