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Inhibition of photosynthesis in isolated spinach chloroplasts by inorganic phosphate or inorganic pyrophosphatase in the presence of pyrophosphate and magnesium ions

Authors
Journal
Biochimica et Biophysica Acta (BBA) - Bioenergetics
0005-2728
Publisher
Elsevier
Publication Date
Volume
333
Issue
1
Identifiers
DOI: 10.1016/0005-2728(74)90169-8
Disciplines
  • Biology

Abstract

Abstract Inhibition of photosynthesis in isolated spinach chloroplasts by P i is decreased by the presence of PP i and increased with increasing Mg 2+ concentration. Previously reported regulation of this photosynthesis by protein factors from spinach leaves appears to be due mostly to pyrophosphate phosphohydrolase (EC 3.6.1.1) activity which converts PP i to P i and to the effects of PP i and Mg 2+ on this pyrophosphatase activity.

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