this piece corresponds to the legacy myPDB login in the form of a bootstrap modal, will likely retire-->



QUE is found in 24 entries

QUE as free ligands, exist in 24 entries. Example includes: 3LJ0 2JJ2 1E8W

Find related ligands: Stereoisomers Similar ligands Chemical Structure Search

View summary at Ligand Expo

Chemical Component Summary

FormulaC15 H10 O7
Molecular Weight302.24 g/mol
Isomeric SMILESOc1cc(O)c2c(c1)oc(-c1ccc(O)c(O)c1)c(O)c2=O

Chemical Details

Formal Charge0
Atom Count32
Chiral Atom Count0
Chiral Atomsn/a
Bond Count34
Aromatic Bond Count18
Leaving Atomsn/a

Drug Info: DrugBank

DrugBank IDDB04216 Stereoisomeric match
DescriptionA flavonol widely distributed in plants. It is an antioxidant, like many other phenolic heterocyclic compounds. Glycosylated forms include RUTIN and quercetrin. [PubChem]
Mechanism of actionQuercetin is a specific quinone reductase 2 (QR2) inhibitor, an enzyme (along with the human QR1 homolog) which catalyzes metabolism of toxic quinolines. Inhibition of QR2 in plasmodium may potentially cause lethal oxidative stress. The inhibition of antioxidant activity in plasmodium may contribute to killing the malaria causing parasites.
  • Antioxidants
  • BCRP/ABCG2 Inhibitors
  • Benzopyrans
  • Chemical Actions and Uses
  • Chromones
CAS number117-39-5
Drug Info/Drug Targets: DrugBank 3.0: a comprehensive resource for 'omics' research on drugs. Knox C, Law V, Jewison T, Liu P, Ly S, Frolkis A, Pon A, Banco K, Mak C, Neveu V, Djoumbou Y, Eisner R, Guo AC, Wishart DS. Nucleic Acids Res. 2011 Jan; 39 (Database issue):D1035-41. | PMID:21059682