Record Information
Version1.0
StatusDetected and Quantified
Creation Date2021-11-17 23:52:59 UTC
Update Date2022-08-31 17:39:32 UTC
Metabolite IDMMDBc0030076
Metabolite Identification
Common NameL-Xylulose 5-phosphate
Description)Xylulose 5-phosphate (Xu-5-P) is a metabolite of the hexose monophosphate pathway that activates protein phosphatase 2A to mediate the acute effects of carbohydrate feeding on the glycolytic pathway, as well as the coordinate long-term control of the enzymes required for fatty acid and triglyceride synthesis. Xu-5-P is the signal for the coordinated control of lipogenesis. Feeding carbohydrate causes levels of glucose, Glucose-6-phosphate (Glc-6-P), and Fructose-6-phosphate (Fru-6-P) to rise. Elevation of Fru-6-P leads to elevation of Xu-5-P in reactions catalyzed by the near-equilibrium isomerases of the nonoxidative portion of the hexose monophosphate pathway (ribulose 5-phosphate (Ru5P) epimerase [EC 5.1.3.1], ribose 5-phosphate (Rib5P) isomerase [EC 5.3.1.6], transaldolase [EC 2.2.1.2], and transketolase [EC 2.2.1.1]). The elevation of Xu-5-P is the coordinating signal that both acutely activates phosphofructokinase [PFK
Structure
Synonyms
ValueSource
L-Xylulose -5-phosphoric acidGenerator
Molecular FormulaC7H13O6P
Average Mass224.15
Monoisotopic Mass224.046072296
IUPAC Name1-hydroxy-3,4-dimethyl-5-(phosphonatooxy)pentan-2-one
Traditional Name1-hydroxy-3,4-dimethyl-5-(phosphonatooxy)pentan-2-one
CAS Registry Number60802-29-1
SMILES
CC(COP([O-])([O-])=O)C(C)C(=O)CO
InChI Identifier
InChI=1S/C7H15O6P/c1-5(4-13-14(10,11)12)6(2)7(9)3-8/h5-6,8H,3-4H2,1-2H3,(H2,10,11,12)/p-2
InChI KeyGOBYCGYLQSIFMQ-UHFFFAOYSA-L