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

Steven C. Huber, Markus Bachmann, Joan L. Huber

Research output: Contribution to journalReview articlepeer-review


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 effectors regulating the phosphorylation status of NR in vivo.

Original languageEnglish (US)
Pages (from-to)432-438
Number of pages7
JournalTrends in Plant Science
Issue number12
StatePublished - Dec 1996

ASJC Scopus subject areas

  • Plant Science


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