Purification and characterization of a multifunctional calmodulin-dependent protein kinase from canine myocardial cytosol.
Purification and characterization of a multifunctional calmodulin-dependent protein kinase from canine myocardial cytosol.
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从犬心肌细胞质中纯化和表征多功能钙调蛋白依赖性蛋白激酶。
DOI:
10.1016/0003-9861(86)90396-6
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发表时间:
1986
影响因子:
3.9
通讯作者:
E. Miyamoto
中科院分区:
文献类型:
--
作者:
T. Iwasa;N. Inoue;Kohji Fukunaga;Toshiaki Isobe;Tsuneo Okuyama;E. Miyamoto
A calmodulin-dependent protein kinase from canine myocardial cytosol was purified 1150-fold to apparent homogeneity with a 1.5% yield. The purified enzyme had aMrof 550,000 with a sedimentation coefficient of 16.6 S, and showed a single protein band with aMrof 55,000 (55K protein), determined by sodium dodecyl sulfate-polyacrylamide gel electrophoresis. The purified enzyme had a specific activity of 1.6 μmol/mg protein/min, andKavalues of 67 nM and 1.1 μM for calmodulin and Ca2+, respectively, using chicken gizzard myosin light chain as substrate. Calmodulin bound to the 55K protein. The purified enzyme had a broad substrate specificity. Endogenous proteins including glycogen synthase, phospholamban, and troponin I from the canine heart were phosphorylated by the enzyme. These results suggest that the purified enzyme works as a multifunctional protein kinase in the Ca2+, calmodulin-dependent cellular functions of the canine myocardium, and that the enzyme resembles enzymes detected in the brain, liver, and skeletal muscle.
DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Robertson,SP;Johnson,JD;Holroyde,MJ;Kranias,EG;Potter,JD;Solaro,RJ
通讯作者:
Solaro,RJ
DOI:
--
发表时间:
1983
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Payne,ME;Schworer,CM;Soderling,TR
通讯作者:
Soderling,TR
DOI:
--
发表时间:
1982
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Kirchberger,MA;Antonetz,T
通讯作者:
Antonetz,T