2AGZ

Crystal structure of the carbinolamine intermediate in the reductive half-reaction of aromatic amine dehydrogenase (AADH) with tryptamine. F222 form

2AGZ の概要

• エントリーDOI: 10.2210/pdb2agz/pdb
• 関連するPDBエントリー: 2AGL 2AGU 2AGW 2AGX 2AGY 2AH0 2AH1
• 分子名称: Aromatic amine dehydrogenase, ZINC ION, (1S)-1-AMINO-2-(1H-INDOL-3-YL)ETHANOL, ... (5 entities in total)
• 機能のキーワード: oxidoreductase
• 由来する生物種: Alcaligenes faecalis; 詳細
• 細胞内の位置: Periplasm: P84887 P84888
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 109549.29

構造登録者

Masgrau, L.,Roujeinikova, A.,Johannissen, L.O.,Hothi, P.,Basran, J.,Ranaghan, K.E.,Mulholland, A.J.,Sutcliffe, M.J.,Scrutton, N.S.,Leys, D. (登録日: 2005-07-27, 公開日: 2006-04-25, 最終更新日: 2011-07-13)

主引用文献

Masgrau, L.,Roujeinikova, A.,Johannissen, L.O.,Hothi, P.,Basran, J.,Ranaghan, K.E.,Mulholland, A.J.,Sutcliffe, M.J.,Scrutton, N.S.,Leys, D.
Atomic description of an enzyme reaction dominated by proton tunneling
Science, 312:237-241, 2006

PubMed Abstract: We present an atomic-level description of the reaction chemistry of an enzyme-catalyzed reaction dominated by proton tunneling. By solving structures of reaction intermediates at near-atomic resolution, we have identified the reaction pathway for tryptamine oxidation by aromatic amine dehydrogenase. Combining experiment and computer simulation, we show proton transfer occurs predominantly to oxygen O2 of Asp(128)beta in a reaction dominated by tunneling over approximately 0.6 angstroms. The role of long-range coupled motions in promoting tunneling is controversial. We show that, in this enzyme system, tunneling is promoted by a short-range motion modulating proton-acceptor distance and no long-range coupled motion is required.

PubMed: 16614214
DOI: 10.1126/science.1126002

実験手法

X-RAY DIFFRACTION (1.6 Å)