+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7m6o | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
タイトル | Full length alpha1 Glycine receptor in presence of 0.1mM Glycine and 32uM Tetrahydrocannabinol | |||||||||
要素 | Glycine receptor subunit alphaZ1 | |||||||||
キーワード | MEMBRANE PROTEIN / Ions Ligands Receptors / Glycine receptor Recombinant Proteins | |||||||||
機能・相同性 | 機能・相同性情報 transmitter-gated monoatomic ion channel activity / Neurotransmitter receptors and postsynaptic signal transmission / extracellularly glycine-gated ion channel activity / extracellularly glycine-gated chloride channel activity / cellular response to ethanol / cellular response to zinc ion / regulation of neuron differentiation / neurotransmitter receptor activity / glycine binding / chloride channel complex ...transmitter-gated monoatomic ion channel activity / Neurotransmitter receptors and postsynaptic signal transmission / extracellularly glycine-gated ion channel activity / extracellularly glycine-gated chloride channel activity / cellular response to ethanol / cellular response to zinc ion / regulation of neuron differentiation / neurotransmitter receptor activity / glycine binding / chloride channel complex / ligand-gated monoatomic ion channel activity / transmembrane transporter complex / response to amino acid / monoatomic ion transport / chloride transmembrane transport / central nervous system development / cellular response to amino acid stimulus / transmembrane signaling receptor activity / perikaryon / postsynaptic membrane / neuron projection / dendrite / synapse / zinc ion binding / membrane / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | Danio rerio (ゼブラフィッシュ) | |||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 2.84 Å | |||||||||
データ登録者 | Kumar, A. / Chakrapani, S. | |||||||||
資金援助 | 米国, 2件
| |||||||||
引用 | ジャーナル: Nat Commun / 年: 2022 タイトル: Structural basis for cannabinoid-induced potentiation of alpha1-glycine receptors in lipid nanodiscs. 著者: Arvind Kumar / Kayla Kindig / Shanlin Rao / Afroditi-Maria Zaki / Sandip Basak / Mark S P Sansom / Philip C Biggin / Sudha Chakrapani / 要旨: Nociception and motor coordination are critically governed by glycine receptor (GlyR) function at inhibitory synapses. Consequentially, GlyRs are attractive targets in the management of chronic pain ...Nociception and motor coordination are critically governed by glycine receptor (GlyR) function at inhibitory synapses. Consequentially, GlyRs are attractive targets in the management of chronic pain and in the treatment of several neurological disorders. High-resolution mechanistic details of GlyR function and its modulation are just emerging. While it has been known that cannabinoids such as Δ-tetrahydrocannabinol (THC), the principal psychoactive constituent in marijuana, potentiate GlyR in the therapeutically relevant concentration range, the molecular mechanism underlying this effect is still not understood. Here, we present Cryo-EM structures of full-length GlyR reconstituted into lipid nanodisc in complex with THC under varying concentrations of glycine. The GlyR-THC complexes are captured in multiple conformational states that reveal the basis for THC-mediated potentiation, manifested as different extents of opening at the level of the channel pore. Taken together, these structural findings, combined with molecular dynamics simulations and functional analysis, provide insights into the potential THC binding site and the allosteric coupling to the channel pore. #1: ジャーナル: Nat Commun / 年: 2020 タイトル: Mechanisms of activation and desensitization of full-length glycine receptor in lipid nanodiscs. 著者: Arvind Kumar / Sandip Basak / Shanlin Rao / Yvonne Gicheru / Megan L Mayer / Mark S P Sansom / Sudha Chakrapani / 要旨: Glycinergic synapses play a central role in motor control and pain processing in the central nervous system. Glycine receptors (GlyRs) are key players in mediating fast inhibitory neurotransmission ...Glycinergic synapses play a central role in motor control and pain processing in the central nervous system. Glycine receptors (GlyRs) are key players in mediating fast inhibitory neurotransmission at these synapses. While previous high-resolution structures have provided insights into the molecular architecture of GlyR, several mechanistic questions pertaining to channel function are still unanswered. Here, we present Cryo-EM structures of the full-length GlyR protein complex reconstituted into lipid nanodiscs that are captured in the unliganded (closed), glycine-bound (open and desensitized), and allosteric modulator-bound conformations. A comparison of these states reveals global conformational changes underlying GlyR channel gating and modulation. The functional state assignments were validated by molecular dynamics simulations, and the observed permeation events are in agreement with the anion selectivity and conductance of GlyR. These studies provide the structural basis for gating, ion selectivity, and single-channel conductance properties of GlyR in a lipid environment. | |||||||||
履歴 |
|
-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
---|
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7m6o.cif.gz | 327.6 KB | 表示 | PDBx/mmCIF形式 |
---|---|---|---|---|
PDB形式 | pdb7m6o.ent.gz | 266.8 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7m6o.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 7m6o_validation.pdf.gz | 1.4 MB | 表示 | wwPDB検証レポート |
---|---|---|---|---|
文書・詳細版 | 7m6o_full_validation.pdf.gz | 1.4 MB | 表示 | |
XML形式データ | 7m6o_validation.xml.gz | 66.4 KB | 表示 | |
CIF形式データ | 7m6o_validation.cif.gz | 91 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/m6/7m6o ftp://data.pdbj.org/pub/pdb/validation_reports/m6/7m6o | HTTPS FTP |
-関連構造データ
関連構造データ | 23702MC 7m6mC 7m6nC 7m6pC 7m6qC 7m6rC 7m6sC M: このデータのモデリングに利用したマップデータ C: 同じ文献を引用 (文献) |
---|---|
類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-リンク
-集合体
登録構造単位 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 |
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
非結晶学的対称性 (NCS) | NCSドメイン:
NCSドメイン領域:
|