1Z10

Crystal Structure of Human Microsomal P450 2A6 with Coumarin Bound

1Z10 の概要

• エントリーDOI: 10.2210/pdb1z10/pdb
• 関連するPDBエントリー: 1PQ2 1R9O 1TQN 1Z11
• 分子名称: cytochrome P450, family 2, subfamily A, polypeptide 6, PROTOPORPHYRIN IX CONTAINING FE, COUMARIN, ... (5 entities in total)
• 機能のキーワード: cyp2a6, p450 2a6, p450, monooxygenase, drug metabolizing enzyme, coumarin 7-hydroxylase, nicotine oxidase, oxidoreductase, heme
• 由来する生物種: Homo sapiens (human)
• 細胞内の位置: Endoplasmic reticulum membrane; Peripheral membrane protein: P11509
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 221829.16

構造登録者

Yano, J.K.,Hsu, M.H.,Griffin, K.J.,Stout, C.D.,Johnson, E.F. (登録日: 2005-03-02, 公開日: 2005-08-16, 最終更新日: 2023-08-23)

主引用文献

Yano, J.K.,Hsu, M.H.,Griffin, K.J.,Stout, C.D.,Johnson, E.F.
Structures of human microsomal cytochrome P450 2A6 complexed with coumarin and methoxsalen
Nat.Struct.Mol.Biol., 12:822-823, 2005

PubMed Abstract: 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.

PubMed: 16086027
DOI: 10.1038/nsmb971

実験手法

X-RAY DIFFRACTION (1.9 Å)