Journal
NATURE STRUCTURAL & MOLECULAR BIOLOGY
Volume 12, Issue 9, Pages 822-823Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nsmb971
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Funding
- NCRR NIH HHS [M01 RR00833] Funding Source: Medline
- NIGMS NIH HHS [GM031001] Funding Source: Medline
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Human microsomal cytochrome P450 2A6 (CYP2A6) contributes extensively to nicotine detoxication but also activates tobacco-specific procarcinogens to mutagenic products. The CYP2A6 structure shows a compact, hydrophobic active site with one hydrogen bond donor, Asn297, that orients coumarin for regioselective oxidation. The inhibitor methoxsalen effectively fills the active site cavity without substantially perturbing the structure. The structure should aid the design of inhibitors to reduce smoking and tobacco-related cancers.
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