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How Atmospheric Oxygen is captured by Rubisco

Abstract : Fixation of carbon dioxide (CO2) through photosynthesis, which drives the global carbon cycle, is catalysed by the most abundant enzyme on Earth, ribulose 1,5-bisphosphate carboxylase/oxygenase (RuBisCo). Despite its evolutionary success, a major problem of this enzyme is its propensity to fix molecular oxygen (O2), which is a competitive inhibitor of CO2. Each year, ~100 gigatons of oxygen are fixed by RuBisCo, causing a huge liberation of CO2 through photorespiratory metabolism. Surprisingly, our understanding of how O2 reacts with RuBisCo has remained mysterious for decades.
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https://hal.inrae.fr/hal-03143944
Contributor : Olivier Dupre <>
Submitted on : Wednesday, February 17, 2021 - 10:43:35 AM
Last modification on : Thursday, February 18, 2021 - 3:33:03 AM

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Guillaume Tcherkez. How Atmospheric Oxygen is captured by Rubisco. Nature Reviews Molecular Cell Biology, Nature Publishing Group, 2021, pp.Early access. ⟨10.1038/s41580-021-00344-y⟩. ⟨hal-03143944⟩

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