Skip to Content
Medical Term:


Pronunciation: ri'byu-los


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.

© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.