Activation of Jun Kinase/Stress-activated Protein Kinase by GTPase-deficient Mutants of Gα12 and Gα13(*)
Activation of Jun Kinase/Stress-activated Protein Kinase by GTPase-deficient Mutants of Gα12 and Gα13(*)
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Gα12 和 Gα13 的 GTP 酶缺陷突变体对 Jun 激酶/应激激活蛋白激酶的激活 (*)
DOI:
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发表时间:
1995
影响因子:
4.8
通讯作者:
N. Dhanasekaran
中科院分区:
文献类型:
--
作者:
M. V. Prasad;J. M. Dermott;L. Heasley;G. Johnson;N. Dhanasekaran
Signal transduction pathways regulated by G12 and G13 heterotrimeric G proteins are largely unknown. Expression of activated, GTPase-deficient mutants of α12 and α13 alter physiological responses such as Na+/H+ exchanger activity, but the effector pathways controlling these responses have not been defined. We have found that the expression of GTPase-deficient mutants of α12 (α12Q229L) or α13 (α13Q226L) leads to robust activation of the Jun kinase/stress-activated protein kinase (JNK/SAPK) pathway. Inducible α12Q229L and α13Q226L expression vectors stably transfected in NIH 3T3 cells demonstrated JNK/SAPK activation but not extracellular response/mitogen-activated protein kinase activation. Transient transfection of α12Q229L and α13Q226L also activated the JNK/SAPK pathway in COS-1 cells. Expression of the GTPase-deficient mutant of αq (αqQ209L) but not αi (αiQ205L) or αs (αsQ227L) was also able to activate the JNK/SAPK pathway. Functional Ras signaling was required for α12Q229L and α13Q226L activation of the JNK/SAPK pathway; expression of competitive inhibitory N17Ras inhibited JNK/SAPK activation in response to both α12Q229L and α13Q226L. The results describe for the first time a Ras-dependent signal transduction pathway involving JNK/SAPK regulated by α12 and α13.
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影响因子:
56.9
作者:
HAN, J;LEE, JD;ULEVITCH, RJ
通讯作者:
ULEVITCH, RJ
DOI:
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发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Voyno-Yasenetskaya,T;Conklin,BR;Gilbert,RL;Hooley,R;Bourne,HR;Barber,DL
通讯作者:
Barber,DL
影响因子:
8
作者:
VaraPrasad,MV;Shore,SK;Dhanasekaran,N
通讯作者:
Dhanasekaran,N
DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Dhanasekaran,N;Prasad,MV;Wadsworth,SJ;Dermott,JM;vanRossum,G
通讯作者:
vanRossum,G
影响因子:
20.3
作者:
Johnson,GL;Dhanasekaran,N
通讯作者:
Dhanasekaran,N