6NGA

Structure of human neuronal nitric oxide synthase R354A/G357D mutant heme domain in complex with 6-(3-(3-(dimethylamino)propyl)-2,6-difluorophenethyl)-4-methylpyridin-2-amine

6NGA の概要

• エントリーDOI: 10.2210/pdb6nga/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 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: 100016.71

構造登録者

Li, H.,Poulos, T.L. (登録日: 2018-12-21, 公開日: 2019-03-13, 最終更新日: 2023-10-11)

主引用文献

Do, H.T.,Li, H.,Chreifi, G.,Poulos, T.L.,Silverman, R.B.
Optimization of Blood-Brain Barrier Permeability with Potent and Selective Human Neuronal Nitric Oxide Synthase Inhibitors Having a 2-Aminopyridine Scaffold.
J. Med. Chem., 62:2690-2707, 2019

PubMed Abstract: Effective delivery of therapeutic drugs into the human brain is one of the most challenging tasks in central nervous system drug development because of the blood-brain barrier (BBB). To overcome the BBB, both passive permeability and efflux transporter liability of a compound must be addressed. Herein, we report our optimization related to BBB penetration of neuronal nitric oxide synthase (nNOS) inhibitors toward the development of new drugs for neurodegenerative diseases. Various approaches, including enhancing lipophilicity and rigidity of new inhibitors and modulating the p K of amino groups, have been employed. In addition to determining inhibitor potency and selectivity, crystal structures of most newly designed compounds complexed to various nitric oxide synthase isoforms have been determined. We have discovered a new analogue (21), which exhibits not only excellent potency ( K < 30 nM) in nNOS inhibition but also a significantly low P-glycoprotein and breast-cancer-resistant protein substrate liability as indicated by an efflux ratio of 0.8 in the Caco-2 bidirectional assay.

PubMed: 30802056
DOI: 10.1021/acs.jmedchem.8b02032

実験手法

X-RAY DIFFRACTION (1.98 Å)