7SAA

Glycine and glutamate bound GluN1a-GluN2B NMDA receptors in non-active 1 conformation at 2.97 Angstrom resolution

7SAA の概要

• エントリーDOI: 10.2210/pdb7saa/pdb
• 関連するPDBエントリー: 7SAB 7SAC 7SAD
• EMDBエントリー: 24946 24947 24948 24949
• 分子名称: Glutamate receptor ionotropic, NMDA 1, Glutamate receptor ionotropic, NMDA 2B, 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose, ... (6 entities in total)
• 機能のキーワード: ligand-gated ion channel, ionotropic glutamate receptor, synaptic protein, voltage-gate ion channel, transport protein
• 由来する生物種: Rattus norvegicus (Rat); 詳細
• タンパク質・核酸の鎖数: 4
• 化学式量合計: 391716.91

構造登録者

Chou, T.-H.,Furukawa, H. (登録日: 2021-09-22, 公開日: 2022-07-20, 最終更新日: 2024-11-13)

主引用文献

Chou, T.H.,Epstein, M.,Michalski, K.,Fine, E.,Biggin, P.C.,Furukawa, H.
Structural insights into binding of therapeutic channel blockers in NMDA receptors.
Nat.Struct.Mol.Biol., 29:507-518, 2022

PubMed Abstract: Excitatory signaling mediated by N-methyl-D-aspartate receptor (NMDAR) is critical for brain development and function, as well as for neurological diseases and disorders. Channel blockers of NMDARs are of medical interest owing to their potential for treating depression, Alzheimer's disease, and epilepsy. However, precise mechanisms underlying binding and channel blockade have remained limited owing to challenges in obtaining high-resolution structures at the binding site within the transmembrane domains. Here, we monitor the binding of three clinically important channel blockers: phencyclidine, ketamine, and memantine in GluN1-2B NMDARs at local resolutions of 2.5-3.5 Å around the binding site using single-particle electron cryo-microscopy, molecular dynamics simulations, and electrophysiology. The channel blockers form different extents of interactions with the pore-lining residues, which control mostly off-speeds but not on-speeds. Our comparative analyses of the three unique NMDAR channel blockers provide a blueprint for developing therapeutic compounds with minimal side effects.

PubMed: 35637422
DOI: 10.1038/s41594-022-00772-0

実験手法

ELECTRON MICROSCOPY (2.97 Å)