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Article Abstract
A comprehensive understanding of microalgal Rubiscos offers opportunities to enhance photosynthetic efficiency of crops. As food production fails to meet the needs of the expanding population, there is increasing concern about Ribulose-1, 5-diphosphate (RuBP) carboxylase/oxygenase (Rubisco), the enzyme that catalyzes CO fixation in photosynthesis. There have been many attempts to optimize Rubisco in crops, but the complex multicellular structure of higher plants makes optimization more difficult. Microalgae have the characteristics of rapid growth, simple structure and easy molecular modification, and the function and properties of their Rubiscos are basically the same as those of higher plants. Research on microalgal Rubiscos helps to broaden the understanding of Rubiscos of higher plants. Also, transferring all or part of better microalgal Rubiscos into crop cells or giving crop Rubiscos the advantages of microalgal Rubiscos can help improve the photosynthesis of crops. In this review, the distribution, origin, evolution, molecular structure, folding, assembly, activation and kinetic properties of microalgal Rubiscos are summarized. Moreover, the development of some effective methods to improve the properties and application of Rubiscos in microalgae are also described.
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