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Kinetics and Energetics of Light-Driven Chloroplast Glutamine Synthesis
Cary A. Mitchell and C. Ralph Stocking
Vol. 55, No. 1 (Jan., 1975), pp. 59-63
Published by: American Society of Plant Biologists (ASPB)
Stable URL: http://www.jstor.org/stable/4263867
Page Count: 5
You can always find the topics here!Topics: Chloroplasts, Plastids, Nitrogen, Plants, Peas, Spinach, pH, Photosynthesis, Photophosphorylation, Amino acids
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Chloroplasts contain the enzyme glutamine synthetase. Formation of glutamine by isolated chloroplasts is light-dependent and requires an intact outer envelope. Addition of exogenous glutamic acid, as well as nitrogen donors such as nitrite or ammonium, stimulate the synthesis of this amide. Photosynthetic generation of ATP satisfies the light requirement of glutamine synthesis. The process is supported by cyclic as well as noncyclic photophosphorylation.
Plant Physiology © 1975 American Society of Plant Biologists (ASPB)