Post-translational regulation of nitrate reductase activity: A role for Ca2+ and 14-3-3 proteins

被引:121
作者
Huber, SC
Bachmann, M
Huber, JL
机构
[1] US Dept. of Agriculture, Agric. Res. Serv. Plant Sci. Res. C., North Carolina State University, Raleigh
关键词
D O I
10.1016/S1360-1385(96)10046-7
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The control of nitrate reductase (NR) activity by reversible protein phosphorylation is a two-stage process: the enzyme is reversibly phosphorylated, and the phosphorylated form then binds an inhibitor protein. Recent results indicate that the phosphorylation reaction is Ca2+-dependent and that the inhibitor is a member of the 14-3-3 family of proteins. These results suggest the convergence of several signal transduction pathways in the control of nitrate assimilation. Recent results also implicate metabolites and 5'-AMP as possible effecters regulating the phosphorylation status of NR in vivo.
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页码:432 / 438
页数:7
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