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. 1971 Dec;48(6):707–711. doi: 10.1104/pp.48.6.707

Involvement of Photosynthetic Carbon Reduction Cycle Intermediates in CO2 Fixation and O2 Evolution by Isolated Chloroplasts 1

Bernice Schacter a,2, J H Eley a,3, Martin Gibbs a
PMCID: PMC396933  PMID: 16657865

Abstract

The photosynthetic carbon reduction cycle intermediates can be divided into three classes according to their effects on the rate of photosynthetic CO2 evolution by whole spinach (Spinacia oleracea) chloroplasts and on their ability to affect reversal of certain inhibitors (nigericin, arsenate, arsenite, iodoacetate, antimycin A) of photosynthesis: class I (maximal): fructose 1, 6-diphosphate, dihydroxyacetone phosphate, glyceraldehyde-3-phosphate, ribose-5-phosphate; class 2 (slight): glucose 6-phosphate, fructose 6-phosphate, ribulose-1, 5-diphosphate; class 3 (variable): glycerate 3-phosphate. While class 1 compounds influence the photosynthetic rate, they do not lower the Michaelis constant of the chloroplast for bicarbonate or affect strongly other photosynthetic properties such as the isotopic distribution pattern. It was concluded that the class 1 compounds influence the chloroplast by not only supplying components to the carbon cycle but also by activating or stabilizing a structural component of the chloroplast.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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