Abstract
Ribulose biphosphate oxygenase/carboxylase is a very interesting enzyme in several respects. It is the enzyme that provides the glycolate associated with photorespiration in C3 plants by catalyzing the reaction of the substrate with molecular oxygen (Metzler, 1977). If carbon dioxide is encountered instead of dioxygen, the product of the reaction is 3-phosphoglycerate (2 equivalents), which enters the Calvin cycle via reduction to glyceraldehyde-3-phosphate (Figure 17–1). This enzyme thus accounts for all light-dependent carbon fixation as well as the substrate for photorespiration. Since the purpose of photorespiration is not understood, the competing reactions of this enzyme are fascinating.
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References
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© 1985 Plenum Press, New York
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Ingraham, L.L., Meyer, D.L. (1985). Ribulose Biphosphate Oxygenase. In: Biochemistry of Dioxygen. Biochemistry of the Elements, vol 4. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-2475-1_17
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DOI: https://doi.org/10.1007/978-1-4613-2475-1_17
Publisher Name: Springer, Boston, MA
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