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Regulation of spinach-leaf nitrate reductase by reversible phosphorylation
1Department of Biochemistry, University of Dundee, UK.
Biochimica Et Biophysica Acta
|October 6, 1992
Abstract:
Okadaic acid and microcystin (but not the inactive methyl esters of these toxins) prevented the rapid light-induced activation of nitrate reductase (NR) in intact spinach leaves. In vitro, nitrate reductase was inactivated by a protein kinase and activated by PP2A. The role of reversible protein phosphorylation in regulation of light-coupled cytoplasmic metabolism is discussed.