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Keyword - Carboxysome (KW-1282)

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Broader

Definition

Protein located in or on the carboxysome, bacterial microcompartments in which ribulose bisphosphate carboxylase (RuBisCO)-mediated CO(2) fixation occurs. The cytoplasmic polyhedral inclusion bodies are surrounded by a thin protein coat. Found in cyanobacteria and some chemoautotrophs, they enhance autotrophic CO(2) fixation in air by increasing the CO(2) concentration around RuBisCO, thus reducing its reaction with O(2), a competing substrate. They contain carbonic anhydrase as part of the CO(2) concentration mechanism.

Category

Cellular component

Gene Ontology

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GOi

carboxysome [ GO:0031470 ]

Graphical

CarboxysomeBacterial microcompartmentCellular component
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