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Molecular modeling of human cytochrome P450-substrate interactions
1School of Biomedical and Life Sciences, University of Surrey, Guildford, UK. d.lewis@surrey.ac.uk
Drug Metabolism Reviews
|May 9, 2002
Summary
Homology modeling of ten human cytochrome P450 enzymes provides structural insights into drug metabolism. These validated models may aid in the pre-screening of new drug candidates.
Area of Science:
- Biochemistry
- Pharmacology
- Structural Biology
Background:
- Cytochrome P450 (CYP) enzymes are crucial for Phase 1 metabolism of xenobiotics.
- Understanding CYP active site interactions is vital for drug development.
Purpose of the Study:
- To generate homology models for ten key human CYP enzymes.
- To assess the utility of these models for predicting drug-enzyme interactions.
Main Methods:
- Homology modeling using the CYP102 hemoprotein domain template.
- Validation against experimental data for substrate metabolism and mutagenesis.
Main Results:
- Models for CYP1A2, CYP2A6, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, CYP2E1, CYP3A4, and CYP4A11 were successfully constructed.
- Substrate binding modes were consistent with experimental findings.
- Models demonstrated self-consistency, aligning with mutagenesis data.
Conclusions:
- The generated homology models are reliable for studying human CYP enzymes.
- These models show potential for the in silico pre-screening of novel drug candidates.
- Structural insights can guide future drug design and metabolism studies.