phosphoribulokinase
Pronunciation: fos′fō-rī′byū-lō-kī′nās
Definition: An enzyme that, in the presence of ATP, catalyzes the phosphorylation of d-ribulose 5-phosphate to d-ribulose 1,5-bisphosphate and ADP, a reaction of importance in the carbon dioxide fixation cycle of photosynthesis.
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Examples: glitazone, GI cocktail, etc.

