期刊
PLANT PHYSIOLOGY AND BIOCHEMISTRY
卷 41, 期 6-7, 页码 523-532出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/S0981-9428(03)00065-2
关键词
C-4 photosynthesis; C-3 plant; PPDK; PPDK regulatory protein; protein phosphorylation/dephosphorylation; pyruvate; Pi dikinase; RP
Pyruvate, orthophosphate dikinase (PPDK, E.C. 2.7.9.1) is a cardinal carbon-assimilating, stromal enzyme of the C, photosynthetic pathway. Like several other photosynthetic pathway enzymes, its activity is strictly and reversibly regulated by light. This regulation is conferred by the PPDK regulatory protein (RP), a bifunctional protein kinase/phosphatase that catalyzes the ADP-/Pi-dependent, reversible phosphorylation of an active-site threonine residue. In this minireview, we highlight how plastidic PPDK in leaves and developing seeds of C-3 plants is regulated in an identical manner as C-4 PPDK via a putative C-3-RP isoform. Additionally, we also detail the progress in research concerning C-4 RP. since this highly unusual regulatory enzyme was last reviewed nearly two decades ago. (C) 2003 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
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