Characterization of a Ca2+/Calmodulin-dependent Protein Kinase Cascade
Characterization of a Ca2+/Calmodulin-dependent Protein Kinase Cascade
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Ca2/钙调蛋白依赖性蛋白激酶级联的表征
DOI:
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发表时间:
1995
影响因子:
4.8
通讯作者:
T. Soderling
中科院分区:
文献类型:
--
作者:
H. Tokumitsu;T. Soderling
Recent studies have demonstrated that Ca2+/calmodulin-dependent protein kinase IV (CaM-kinase IV) can mediate Ca2+-dependent regulation of gene expression through the phosphorylation of transcriptional activating proteins. We have previously identified and purified a 68-kDa rat brain CaM-kinase kinase that phosphorylates and increases total and Ca2+-independent activities of CaM-kinase IV (Tokumitsu, H., Brickey, D. A., Gold, J., Hidaka, H., Sikela, J., and Soderling, T. R.(1994) J. Biol. Chem. 269, 28640-28647). Using a partial amino acid sequence of the purified brain kinase, a CaM-kinase kinase cDNA was cloned from a rat brain cDNA library. Northern blot analysis showed that CaM-kinase kinase mRNA (3.4 kilobases) was expressed in rat brain, thymus, and spleen. Sequence analyses revealed that the cDNA encoded a 505-amino acid protein, which contained consensus protein kinase motifs and was 30-40% homologous with members of the CaM-kinase family. Expression of the cDNA in COS-7 cells yielded an apparent 68-kDa CaM-binding protein, which catalyzed in vitro activation in the presence of Mg2+/ATP and Ca2+/CaM of CaM-kinases I and IV but not of CaM-kinase II. Co-expression of CaM-kinase kinase with CaM-kinase IV gave a 14-fold enhancement of cAMP-response element-binding protein-dependent gene expression compared with CaM-kinase IV alone. These results are consistent with the hypothesis that CaM-kinases I and IV are regulated through a unique signal transduction cascade involving CaM-kinase kinase.
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DOI:
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发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Enslen,H;Sun,P;Brickey,D;Soderling,SH;Klamo,E;Soderling,TR
通讯作者:
Soderling,TR
DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Lee,JC;Edelman,AM
通讯作者:
Edelman,AM
DOI:
10.1016/b978-0-12-152831-7.50007-x
发表时间:
1990
期刊:
Current topics in cellular regulation
影响因子:
--
作者:
Colbran,RJ;Soderling,TR
通讯作者:
Soderling,TR
DOI:
--
发表时间:
1992
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Picciotto,MR;Cohn,JA;Bertuzzi,G;Greengard,P;Nairn,AC
通讯作者:
Nairn,AC
DOI:
10.1073/pnas.88.7.2850
发表时间:
1991-04-01
影响因子:
11.1
作者:
JENSEN, KF;OHMSTEDE, CA;SAHYOUN, N
通讯作者:
SAHYOUN, N