Record Information
Version1.0
StatusDetected and Quantified
Creation Date2021-11-18 02:04:53 UTC
Update Date2022-08-31 18:31:00 UTC
Metabolite IDMMDBc0032160
Metabolite Identification
Common NameUDP-β-L-threo-pentapyranos-4-ulose
DescriptionUDP-beta-L-threo-pentapyranos-4-ulose is an intermediate in the polymixin resistance pathway. It is a substrate for the enzyme UDP-4-amino-4-deoxy-L-arabinose aminotransferase which catalyzes the reaction UDP-4-amino-4-deoxy-beta-L-arabinopyranose + 2-oxoglutarate = UDP-beta-L-threo-pentapyranos-4-ulose + L-glutamate. Some Gram-negative bacteria, specifically Salmonella typhimurium and Escherichia coli, can become resistant to polymyxin by the modification of their lipid A structure via the attachment of 4-amino-4-deoxy-L-arabinopyranose (L-Ara4N) groups to one or more phosphate groups. This addition causes an absolute increase in lipid A charge, thus lowering the affinity of positively charged polymyxins.
Structure
Synonyms
ValueSource
UDP-4''-KetopentoseChEBI
UDP-beta-L-Threo-pentapyranos-4-uloseChEBI
UDP-L-Ara4OChEBI
Uridine 5'-(beta-L-threo-pentapyranosyl-4''-ulose diphosphate)ChEBI
Uridine 5'-diphospho-beta-(L-threo-pentapyranosyl-4''-ulose)ChEBI
UDP-4-Keto-D-xyloseKegg
UDP-b-L-Threo-pentapyranos-4-uloseGenerator
Uridine 5'-(b-L-threo-pentapyranosyl-4''-ulose diphosphate)Generator
Uridine 5'-(b-L-threo-pentapyranosyl-4''-ulose diphosphoric acid)Generator
Uridine 5'-(beta-L-threo-pentapyranosyl-4''-ulose diphosphoric acid)Generator
Uridine 5'-(β-L-threo-pentapyranosyl-4''-ulose diphosphate)Generator
Uridine 5'-(β-L-threo-pentapyranosyl-4''-ulose diphosphoric acid)Generator
Uridine 5'-diphospho-b-(L-threo-pentapyranosyl-4''-ulose)Generator
Uridine 5'-diphospho-β-(L-threo-pentapyranosyl-4''-ulose)Generator
UDP-b-L-threo-Pentopyranos-4-uloseGenerator
UDP-β-L-threo-pentopyranos-4-uloseGenerator
UDP-β-L-threo-pentapyranos-4-uloseGenerator
Molecular FormulaC14H20N2O16P2
Average Mass534.26
Monoisotopic Mass534.028806568
IUPAC Name[({[(2R,3R,4R)-3,4-dihydroxy-5-oxooxan-2-yl]oxy}(hydroxy)phosphoryl)oxy]({[(2R,3S,4R,5R)-5-(2,4-dioxo-1,2,3,4-tetrahydropyrimidin-1-yl)-3,4-dihydroxyoxolan-2-yl]methoxy})phosphinic acid
Traditional Nameudp-L-ara4O
CAS Registry NumberNot Available
SMILES
O[C@@H]1[C@@H](COP(O)(=O)OP(O)(=O)O[C@H]2OCC(=O)[C@H](O)[C@H]2O)O[C@H]([C@@H]1O)N1C=CC(=O)NC1=O
InChI Identifier
InChI=1S/C14H20N2O16P2/c17-5-3-28-13(11(22)8(5)19)31-34(26,27)32-33(24,25)29-4-6-9(20)10(21)12(30-6)16-2-1-7(18)15-14(16)23/h1-2,6,8-13,19-22H,3-4H2,(H,24,25)(H,26,27)(H,15,18,23)/t6-,8+,9-,10-,11-,12-,13-/m1/s1
InChI KeyURJZIQLTPCJVMW-QNSCKLTRSA-N