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Article Dans Une Revue Trends in Plant Science Année : 2018

The Hidden Face of Rubisco

Résumé

Ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) fixes atmospheric CO2 into organic compounds and is composed of eight copies each of a large subunit (RbcL) and a small subunit (RbcS). Recent reports have revealed unusual RbcS, which are expressed in particular tissues and confer higher catalytic rate, lesser affinity for CO2, and a more acidic profile of the activity versus pH. The resulting Rubisco was proposed to be adapted to a high CO2 environment and recycle CO2 generated by the metabolism. These RbcS belong to a cluster named T (for trichome), phylogenetically distant from cluster M, which gathers well-characterized RbcS expressed in mesophyll or bundle-sheath tissues. Cluster T is largely represented in different plant phyla, including pteridophytes and bryophytes, indicating an ancient origin.
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Dates et versions

hal-04400285 , version 1 (17-01-2024)

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Mathieu Pottier, Dimitri Gilis, Marc Boutry. The Hidden Face of Rubisco. Trends in Plant Science, 2018, 23 (5), pp.382-392. ⟨10.1016/j.tplants.2018.02.006⟩. ⟨hal-04400285⟩
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