Xylulose-5-Phosphate

Xylulose-5-phosphate is an intermediate of the pentose phosphate pathway produced from ribulose-5-phosphate in the reaction catalyzed by phosphopentose epimerase or from glyceraldehyde-3-phosphate and sedoheptulose-7-phosphate in the reaction catalyzed by transketolase.

Xylulose-5-phosphate is also produced in the Calvin cycle by a reversal of the pentose phosphate pathway reaction catalyzed by transketolase.

See also: PPP Intermediates, Arabinose Operon

INTERNET LINKS:

> 1. Pentose Phosphate Pathway

> 2. CO 2 Fixation