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Molecular mechanism of Rubisco activase: Dynamic assembly and Rubisco remodeling.


ABSTRACT: Ribulose-1,5-bisphosphate (RuBP) carboxylase-oxygenase (Rubisco) enzyme is the limiting step of photosynthetic carbon fixation, and its activation is regulated by its co-evolved chaperone, Rubisco activase (Rca). Rca removes the intrinsic sugar phosphate inhibitors occupying the Rubisco active site, allowing RuBP to split into two 3-phosphoglycerate (3PGA) molecules. This review summarizes the evolution, structure, and function of Rca and describes the recent findings regarding the mechanistic model of Rubisco activation by Rca. New knowledge in these areas can significantly enhance crop engineering techniques used to improve crop productivity.

SUBMITTER: Waheeda K 

PROVIDER: S-EPMC9951593 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature

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Molecular mechanism of Rubisco activase: Dynamic assembly and Rubisco remodeling.

Waheeda Kazi K   Kitchel Heidi H   Wang Quan Q   Chiu Po-Lin PL  

Frontiers in molecular biosciences 20230210


Ribulose-1,5-bisphosphate (RuBP) carboxylase-oxygenase (Rubisco) enzyme is the limiting step of photosynthetic carbon fixation, and its activation is regulated by its co-evolved chaperone, Rubisco activase (Rca). Rca removes the intrinsic sugar phosphate inhibitors occupying the Rubisco active site, allowing RuBP to split into two 3-phosphoglycerate (3PGA) molecules. This review summarizes the evolution, structure, and function of Rca and describes the recent findings regarding the mechanistic m  ...[more]

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