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| Ribulose-Bisphosphate - Reciprocal Net Common Molecule | Log in | ||
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Ribulose-BisphosphateRibulose bisphosphate is a compound that plays an important role in the Calvin-Benson cycle.
Chemical Formula:
C5H12O11P2
Other names:
Layman's explanation:
The process of incorporating carbon dioxide into cell carbon is called carbon fixation.
Ribulose bisphosphate is found in the stroma of a chloroplast where the
Calvin-Benson cycle takes place. The Calvin-Benson cycle is a carbon fixation pathway in which ribulose bisphosphate plays an important role.
Carbon dioxide binds with ribulose bisphosphate and then
immediately splits to form two 3-phosphoglycerate molecules (3-carbon
compounds) in the presence of an enzyme called Rubisco. The two
3-phosphoglycerate molecules are reduced to glyceraldehyde-3-phosphate; one of
which is converted to dihydroxyacetone phosphate, while the other is then
combined with dihydroxyacetone phosphate to form fructose-1,6-bisphosphate (a
6-carbon compound). Finally, this product is converted into
fructose-6-phosphate. Fructose can be converted into sucrose and is used to
synthesize all needed carbon intermediates that produces energy, such as
glucose. The rest of the Calvin-Benson cycle involves the regeneration of ribulose bisphosphate, thus completing the cycle.
Keywords:
carbon fixation,
photosynthesis
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Crystallographic
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