6POA

Structure of human neuronal nitric oxide synthase R354A/G357D mutant heme domain in complex with 7-(3-(Aminomethyl)-4-(pyridin-3-ylmethoxy)phenyl)-4-methylquinolin-2-amine

6POA の概要

• エントリーDOI: 10.2210/pdb6poa/pdb
• 分子名称: Nitric oxide synthase, brain, PROTOPORPHYRIN IX CONTAINING FE, 5,6,7,8-TETRAHYDROBIOPTERIN, ... (6 entities in total)
• 機能のキーワード: nitric oxide synthase inhibitor complex heme enzyme, oxidoreductase, oxidoreductase-oxidoreductase inhibitor complex, oxidoreductase/oxidoreductase inhibitor
• 由来する生物種: Homo sapiens (Human)
• タンパク質・核酸の鎖数: 2
• 化学式量合計: 100461.21

構造登録者

Li, H.,Poulos, T.L. (登録日: 2019-07-03, 公開日: 2020-04-29, 最終更新日: 2023-10-11)

主引用文献

Cinelli, M.A.,Reidl, C.T.,Li, H.,Chreifi, G.,Poulos, T.L.,Silverman, R.B.
First Contact: 7-Phenyl-2-Aminoquinolines, Potent and Selective Neuronal Nitric Oxide Synthase Inhibitors That Target an Isoform-Specific Aspartate.
J.Med.Chem., 63:4528-4554, 2020

PubMed Abstract: Inhibition of neuronal nitric oxide synthase (nNOS), an enzyme implicated in neurodegenerative disorders, is an attractive strategy for treating or preventing these diseases. We previously developed several classes of 2-aminoquinoline-based nNOS inhibitors, but these compounds had drawbacks including off-target promiscuity, low activity against human nNOS, and only modest selectivity for nNOS over related enzymes. In this study, we synthesized new nNOS inhibitors based on 7-phenyl-2-aminoquinoline and assayed them against rat and human nNOS, human eNOS, and murine and (in some cases) human iNOS. Compounds with a -relationship between the aminoquinoline and a positively charged tail moiety were potent and had up to nearly 900-fold selectivity for human nNOS over human eNOS. X-ray crystallography indicates that the amino groups of some compounds occupy a water-filled pocket surrounding an nNOS-specific aspartate residue (absent in eNOS). This interaction was confirmed by mutagenesis studies, making 7-phenyl-2-aminoquinolines the first aminoquinolines to interact with this residue.

PubMed: 32302123
DOI: 10.1021/acs.jmedchem.9b01573

実験手法

X-RAY DIFFRACTION (1.809 Å)