A CA(2+)-DEPENDENT PROTEIN-KINASE PHOSPHORYLATES PHOSPHOENOLPYRUVATE CARBOXYLASE IN MAIZE

被引：29
|
作者：
OGAWA, N [1 ]
OKUMURA, S [1 ]
IZUI, K [1 ]
机构：
[1] KYOTO UNIV,FAC SCI,DEPT CHEM,KYOTO 60601,JAPAN
来源：
FEBS LETTERS | 1992年 / 302卷 / 01期
关键词：
PHOSPHOENOLPYRUVATE CARBOXYLASE; C(4) PHOTOSYNTHESIS; PHOSPHORYLATION; PROTEIN KINASE INHIBITOR; CA(2+)-DEPENDENT PROTEIN KINASE; MAIZE;
D O I：
10.1016/0014-5793(92)80291-N
中图分类号：
Q5 [生物化学]; Q7 [分子生物学];
学科分类号：
071010 ; 081704 ;
摘要：
In C4 plants the activity of phosphoenolpyruvate carboxylase (PEPC; EC 4.1.1.31) is regulated by phosphorylation/dephosphorylation which is mediated by light/dark signals. The study using protein kinase inhibitors showed that the inhibition pattern of maize PEPC-protein kinase (PEPC-PK) is similar to that of myosin light chain kinase, a Ca2+-calmodulin-dependent PK. The kinase activity was also inhibited by EGTA and the inhibition was relieved by Ca2+. These results suggest that PEPC-PK is Ca2+-dependent in contrast with previous observations by other research groups.
引用
收藏
页码：86 / 88
页数：3
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