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Pronunciation: ri'byu-los

Definition: The 2-keto isomer of ribose. As the 5-phosphate, it participates in the pentose monophosphate shunt; as the 1,5-bisphosphate, it combines with CO2 at the start of the photosynthetic process in green plants (“carbon dioxide trap”); d-ribulose is the epimer of d-xylulose.

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.