4ZJ8

Structures of the human OX1 orexin receptor bound to selective and dual antagonists

4ZJ8 の概要

• エントリーDOI: 10.2210/pdb4zj8/pdb
• 関連するPDBエントリー: 4ZJC
• 分子名称: human OX1R fusion protein to P.abysii glycogen synthase, [(7R)-4-(5-chloro-1,3-benzoxazol-2-yl)-7-methyl-1,4-diazepan-1-yl][5-methyl-2-(2H-1,2,3-triazol-2-yl)phenyl]methanone, OLEIC ACID, ... (4 entities in total)
• 機能のキーワード: orexin, suvorexant, sb674042, signaling protein
• 由来する生物種: Homo sapiens (Human); 詳細
• 細胞内の位置: Cell membrane; Multi-pass membrane protein: O43613
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 64830.72

構造登録者

Yin, J.,Brautigam, C.A.,Shao, Z.,Clark, L.,Harrell, C.M.,Gotter, A.L.,Coleman, P.,Renger, J.J.,Rosenbaum, D.M. (登録日: 2015-04-29, 公開日: 2016-03-09, 最終更新日: 2024-10-23)

主引用文献

Yin, J.,Babaoglu, K.,Brautigam, C.A.,Clark, L.,Shao, Z.,Scheuermann, T.H.,Harrell, C.M.,Gotter, A.L.,Roecker, A.J.,Winrow, C.J.,Renger, J.J.,Coleman, P.J.,Rosenbaum, D.M.
Structure and ligand-binding mechanism of the human OX1 and OX2 orexin receptors.
Nat.Struct.Mol.Biol., 23:293-299, 2016

PubMed Abstract: The orexin (also known as hypocretin) G protein-coupled receptors (GPCRs) regulate sleep and other behavioral functions in mammals, and are therapeutic targets for sleep and wake disorders. The human receptors hOX1R and hOX2R, which are 64% identical in sequence, have overlapping but distinct physiological functions and potential therapeutic profiles. We determined structures of hOX1R bound to the OX1R-selective antagonist SB-674042 and the dual antagonist suvorexant at 2.8-Å and 2.75-Å resolution, respectively, and used molecular modeling to illuminate mechanisms of antagonist subtype selectivity between hOX1R and hOX2R. The hOX1R structures also reveal a conserved amphipathic α-helix, in the extracellular N-terminal region, that interacts with orexin-A and is essential for high-potency neuropeptide activation at both receptors. The orexin-receptor crystal structures are valuable tools for the design and development of selective orexin-receptor antagonists and agonists.

PubMed: 26950369
DOI: 10.1038/nsmb.3183

実験手法

X-RAY DIFFRACTION (2.751 Å)