Erythrose 4-phosphate + fructose 6-phosphate sedoheptulose 7-phosphate + glyceraldehyde 3-phosphate This reaction is catalyzed by

Question

Erythrose 4-phosphate + fructose 6-phosphate <--> sedoheptulose 7-phosphate + glyceraldehyde 3-phosphate This reaction is catalyzed by

Quizplus · Accepted Answer

This is a transaldolase reaction, which involves the transfer of a three-carbon glycoaldehyde unit from one sugar phosphate to another, while also producing an aldose and a ketose sugar phosphate. In this case, erythrose 4-phosphate (a ketose) is transferred to fructose 6-phosphate (an aldose), producing sedoheptulose 7-phosphate (a ketose) and glyceraldehyde 3-phosphate (an aldose). Transaldolase is involved in the non-oxidative phase of the pentose phosphate pathway and is important for the interconversion of various sugar phosphates.

Erythrose 4-Phosphate + Fructose 6-Phosphate <--> Sedoheptulose 7-Phosphate + Glyceraldehyde