Ribulose 5-phosphate

Ribulose -5P

• 4151-19-3
• 2922-69-2 (L- isomer)
• 551-85-9 (D - isomer)

Template: Infobox chemical / molecular formula search available

D -ribulose -5-phosphate is phosphorylated at the C5 carbon atom form of D- ribulose, and plays a central role in several metabolic steps.

Biological Significance

Education

Ribulose -5-phosphate is formed by 6- phosphogluconate dehydrogenase catalyzes from 6- phosphogluconate. In this case, 6-phosphogluconate is decarboxylated through an intermediate stage, and NADP is reduced.

This is one of the first steps in the pentose phosphate pathway and also the Phosphoketolaseweg in the heterofermentative lactic acid fermentation. The reaction itself is so involved in many metabolic pathways, such as the Calvin cycle or in Ribulosemonophosphatweg.

Use

In the pentose phosphate pathway catalyzes a ribose-5- phosphate isomerase, the conversion of ribulose-5- phosphate Ribose -5-phosphate and ribulose phosphate -3 -epimerase, a conversion to xylulose- 5-phosphate.

In the Calvin cycle, ribulose -5-phosphate converted by ATP consumption in a diphosphorylated form, the D -ribulose -1 ,5- bisphosphate.

It is also used as a basic building block in the biosynthesis of isoalloxazine and pteridine.