3U81

Crystal structure of a SAH-bound semi-holo form of rat Catechol-O-methyltransferase

3U81 の概要

• エントリーDOI: 10.2210/pdb3u81/pdb
• 関連するPDBエントリー: 3nwb 3nwe 3r6t 3s68
• 分子名称: Catechol O-methyltransferase, S-ADENOSYL-L-HOMOCYSTEINE, POTASSIUM ION, ... (4 entities in total)
• 機能のキーワード: methyltransferase, neurotransmitter degradation, transferase-transferase inhibitor complex, transferase/transferase inhibitor
• 由来する生物種: Rattus norvegicus (rat)
• 細胞内の位置: Isoform 2: Cytoplasm. Isoform 1: Cell membrane; Single-pass type II membrane protein; Extracellular side: P22734
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 25117.84

構造登録者

Ehler, A.,Schlatter, D.,Stihle, M.,Benz, J.,Rudolph, M.G. (登録日: 2011-10-15, 公開日: 2012-02-01, 最終更新日: 2024-02-28)

主引用文献

Ellermann, M.,Lerner, C.,Burgy, G.,Ehler, A.,Bissantz, C.,Jakob-Roetne, R.,Paulini, R.,Allemann, O.,Tissot, H.,Grunstein, D.,Stihle, M.,Diederich, F.,Rudolph, M.G.
Catechol-O-methyltransferase in complex with substituted 3'-deoxyribose bisubstrate inhibitors.
Acta Crystallogr.,Sect.D, 68:253-260, 2012

PubMed Abstract: The biological activity of catechol neurotransmitters such as dopamine in the synapse is modulated by transporters and enzymes. Catechol-O-methyltransferase (COMT; EC 2.1.1.6) inactivates neurotransmitters by catalyzing the transfer of a methyl group from S-adenosylmethionine to catechols in the presence of Mg²⁺. This pathway also inactivates L-DOPA, the standard therapeutic for Parkinson's disease. Depletion of catechol neurotransmitters in the prefrontal cortex has been linked to schizophrenia. The inhibition of COMT therefore promises improvements in the treatment of these diseases. The concept of bisubstrate inhibitors for COMT has been described previously. Here, ribose-modified bisubstrate inhibitors were studied. Three high-resolution crystal structures of COMT in complex with novel ribose-modified bisubstrate inhibitors confirmed the predicted binding mode but displayed subtle alterations at the ribose-binding site. The high affinity of the inhibitors can be convincingly rationalized from the structures, which document the possibility of removing and/or replacing the ribose 3'-hydroxyl group and provide a framework for further inhibitor design.

PubMed: 22349227
DOI: 10.1107/S0907444912001138

実験手法

X-RAY DIFFRACTION (1.13 Å)