Photosynthetic Phosphorylation by Chloroplasts of Higher Plants

  • Richard E. McCarty


Photosynthesis in green plants may be described as the light-dependent reduction of carbon dioxide to the level of carbohydrates coupled to the oxidation of water to molecular oxygen. In 1931, van Niel suggested that the light-driven step in photosynthesis is the photolysis of water. Water photooxidation would produce reducing equivalents, which van Niel proposed were used to reduce carbon dioxide, and molecular oxygen. Van Neil’s scheme was supported by Hill’s pioneering biochemical investigations of photosynthesis. Hill (1937) demonstrated that cell-free extracts of green leaves that contain broken chloroplasts catalyze the reduction of ferric ions to ferrous ions, concomitant with the evolution of oxygen. Only much later was it demonstrated that nicotinamide adenine dinucleotide phosphate (NADP+)* is the natural electron acceptor for the Hill reaction.


Thylakoid Membrane Electron Flow Coupling Factor Spinach Chloroplast Cyclic Electron Flow 
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Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • Richard E. McCarty
    • 1
  1. 1.Section of Biochemistry, Molecular and Cell BiologyCornell UniversityIthacaUSA

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