+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 8xmm | ||||||
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タイトル | Voltage-gated sodium channel Nav1.7 variant M9 | ||||||
要素 | (Sodium channel ...) x 2 | ||||||
キーワード | MEMBRANE PROTEIN / Voltage-gated sodium channel | ||||||
機能・相同性 | 機能・相同性情報 corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / membrane depolarization during Purkinje myocyte cell action potential / regulation of atrial cardiac muscle cell membrane depolarization / cardiac conduction / regulation of sodium ion transmembrane transport / membrane depolarization during cardiac muscle cell action potential / positive regulation of sodium ion transport ...corticospinal neuron axon guidance / positive regulation of voltage-gated sodium channel activity / detection of mechanical stimulus involved in sensory perception / voltage-gated sodium channel activity involved in cardiac muscle cell action potential / membrane depolarization during Purkinje myocyte cell action potential / regulation of atrial cardiac muscle cell membrane depolarization / cardiac conduction / regulation of sodium ion transmembrane transport / membrane depolarization during cardiac muscle cell action potential / positive regulation of sodium ion transport / node of Ranvier / sodium channel inhibitor activity / membrane depolarization during action potential / voltage-gated sodium channel complex / cardiac muscle cell action potential involved in contraction / locomotion / regulation of ventricular cardiac muscle cell membrane repolarization / neuronal action potential propagation / Interaction between L1 and Ankyrins / voltage-gated sodium channel activity / sodium ion transport / behavioral response to pain / Phase 0 - rapid depolarisation / regulation of heart rate by cardiac conduction / detection of temperature stimulus involved in sensory perception of pain / membrane depolarization / intercalated disc / sodium channel regulator activity / sodium ion transmembrane transport / cardiac muscle contraction / T-tubule / sensory perception of pain / post-embryonic development / axon guidance / response to toxic substance / positive regulation of neuron projection development / Sensory perception of sweet, bitter, and umami (glutamate) taste / circadian rhythm / perikaryon / transmembrane transporter binding / cell adhesion / inflammatory response / axon / extracellular region / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) | ||||||
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: 2.89 Å | ||||||
データ登録者 | Yan, N. / Li, Z. / Wu, Q. / Huang, G. | ||||||
資金援助 | 中国, 1件
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引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2024 タイトル: Dissection of the structure-function relationship of Na channels. 著者: Zhangqiang Li / Qiurong Wu / Gaoxingyu Huang / Xueqin Jin / Jiaao Li / Xiaojing Pan / Nieng Yan / 要旨: Voltage-gated sodium channels (Na) undergo conformational shifts in response to membrane potential changes, a mechanism known as the electromechanical coupling. To delineate the structure-function ...Voltage-gated sodium channels (Na) undergo conformational shifts in response to membrane potential changes, a mechanism known as the electromechanical coupling. To delineate the structure-function relationship of human Na channels, we have performed systematic structural analysis using human Na1.7 as a prototype. Guided by the structural differences between wild-type (WT) Na1.7 and an eleven mutation-containing variant, designated Na1.7-M11, we generated three additional intermediate mutants and solved their structures at overall resolutions of 2.9-3.4 Å. The mutant with nine-point mutations in the pore domain (PD), named Na1.7-M9, has a reduced cavity volume and a sealed gate, with all voltage-sensing domains (VSDs) remaining up. Structural comparison of WT and Na1.7-M9 pinpoints two residues that may be critical to the tightening of the PD. However, the variant containing these two mutations, Na1.7-M2, or even in combination with two additional mutations in the VSDs, named Na1.7-M4, failed to tighten the PD. Our structural analysis reveals a tendency of PD contraction correlated with the right shift of the static inactivation I-V curves. We predict that the channel in the resting state should have a "tight" PD with down VSDs. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 8xmm.cif.gz | 291.8 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb8xmm.ent.gz | 215.7 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 8xmm.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 | 8xmm_validation.pdf.gz | 2.2 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 8xmm_full_validation.pdf.gz | 2.2 MB | 表示 | |
XML形式データ | 8xmm_validation.xml.gz | 53.6 KB | 表示 | |
CIF形式データ | 8xmm_validation.cif.gz | 77.1 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/xm/8xmm ftp://data.pdbj.org/pub/pdb/validation_reports/xm/8xmm | HTTPS FTP |
-関連構造データ
関連構造データ | 38482MC 8xmnC 8xmoC 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) |
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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 |
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1 |
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-要素
-Sodium channel ... , 2種, 2分子 AB
#1: タンパク質 | 分子量: 231572.266 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: SCN9A, NENA / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q15858 |
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#2: タンパク質 | 分子量: 26355.857 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: SCN1B / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q07699 |
-糖 , 2種, 8分子
#3: 多糖 | #4: 糖 | ChemComp-NAG / |
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-非ポリマー , 5種, 18分子
#5: 化合物 | ChemComp-CLR / | ||||||
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#6: 化合物 | ChemComp-LPE / #7: 化合物 | ChemComp-1PW / ( | #8: 化合物 | ChemComp-PCW / #9: 化合物 | ChemComp-P5S / | |
-詳細
研究の焦点であるリガンドがあるか | N |
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Has protein modification | Y |
-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
-試料調製
構成要素 | 名称: Voltage-gated sodium channel Nav1.7-M9 / タイプ: COMPLEX / Entity ID: #1-#2 / 由来: RECOMBINANT |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) |
緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
-電子顕微鏡撮影
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TITAN KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1800 nm / 最小 デフォーカス(公称値): 1500 nm |
撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
-解析
EMソフトウェア | 名称: PHENIX / バージョン: 1.18_3855: / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
3次元再構成 | 解像度: 2.89 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 483417 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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