期刊
PLANT PHYSIOLOGY AND BIOCHEMISTRY
卷 46, 期 3, 页码 275-291出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.plaphy.2008.01.001
关键词
Rubisco; structure-function studies; CO2/O-2 specificity; evolution; structure-based alignment
Ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) is the major enzyme assimilating CO2 into the biosphere. At the same time Rubisco is an extremely inefficient catalyst and its carboxylase activity is compromised by an opposing oxygenase activity involving atmospheric O-2. The shortcomings of Rubisco have implications for crop yield, nitrogen and water usage, and for the global carbon cycle. Numerous high-resolution crystal structures of different forms of Rubisco are now available, including structures of mutant enzymes. This review uses the information provided in these structures in a structure-based sequence alignment and discusses Rubisco function in the context of structural variations at all levels - amino acid sequence, fold, tertiary and quaternary structure - with an evolutionary perspective and an emphasis on the structural features of the enzyme that may determine its function as a carboxylase. (c) 2008 Elsevier Masson SAS. All rights reserved.
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