Docking analysis of a series of cytochrome P-450(14) alpha DM inhibiting azole antifungals

Drug Des Discov. 1998 May;15(3):181-90.

Abstract

Binding modes of a series of structurally diverse azole antifungals belonging to triazole and imidazole classes have been studied using molecular modeling techniques. The predictive model was derived from docking experiments. The analysis of the resulting model indicated that the N3 of imidazole and N4 of triazole rings are in coordinate bond forming distances with heme iron. The aromatic ring has been found to interact with Phe87, Tyr96, Val295, Val396 and Ile395 at the hydrophobic site of the cytochrome P-450cam. In addition, the hydrogen bonding interaction between an etherial oxygen of compounds 2, 5, 8, 9 and 12 and Tyr96 OH seem to have a significant role. Solvent accessible surface area calculations suggested that the active site of the cytochrome P-450cam is highly hydrophobic. The results are in consistent with the biological activity of these compounds. The proposed active orientation model of azole antifungals could be useful for the rational design of more potent inhibitors.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antifungal Agents / chemical synthesis
  • Antifungal Agents / chemistry*
  • Antifungal Agents / pharmacology*
  • Azoles / chemical synthesis
  • Azoles / chemistry*
  • Azoles / pharmacology*
  • Chemical Phenomena
  • Chemistry, Physical
  • Cytochrome P-450 Enzyme Inhibitors*
  • Energy Transfer
  • Enzyme Inhibitors / chemical synthesis
  • Enzyme Inhibitors / chemistry*
  • Enzyme Inhibitors / pharmacology*
  • Models, Molecular
  • Molecular Conformation
  • Oxidoreductases / antagonists & inhibitors*
  • Sterol 14-Demethylase
  • Structure-Activity Relationship
  • Surface Properties

Substances

  • Antifungal Agents
  • Azoles
  • Cytochrome P-450 Enzyme Inhibitors
  • Enzyme Inhibitors
  • Oxidoreductases
  • Sterol 14-Demethylase