D-Xylulose 5-phosphate sodium salt

D-Xylulose 5-phosphate (D-Xu-5-P) is a metabolite of the hexose monophosphate pathway activating protein phosphatase 2A to mediate the acute effects of carbohydrate feeding on the glycolytic pathway, the coordinated control of enzymes required in fatty acid & triglyceride synthesis. D-Xylulose 5-phosphate is the signal for the coordinated control of lipogenesis. The elevation of D-Xylulose 5-phosphate is the coordinating signal that both acutely activates phosphofructokinase in glycolysis and promotes the action of the transcription factor ChREBP to increase transcription of the genes for the enzymes of lipogenesis, the hexose mono-phosphate shunt, and glycolysis, all of which are required for the de novo synthesis of fat.

Xylulose-5-phoshate (Xu-5-P) is a metabolite of glucose via the pentose phosphate pathway. In the presence of excess glucose, liver Xu-5-P may act as a signaling molecule that regulates the nuclear transport of carbohydrate response element binding protein (ChREBP), a transcription factor that induces the expression of enzymes involved in glucose metabolism and lipogenesis.