+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7dsv | ||||||
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タイトル | Structure of a human NHE1-CHP1 complex under pH 6.5 | ||||||
要素 |
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キーワード | MEMBRANE PROTEIN / Transporter | ||||||
機能・相同性 | 機能・相同性情報 negative regulation of phosphatase activity / positive regulation of sodium:proton antiporter activity / cation-transporting ATPase complex / positive regulation of calcium:sodium antiporter activity / Sodium/Proton exchangers / regulation of the force of heart contraction by cardiac conduction / transporter complex / positive regulation of protein glycosylation / Hyaluronan uptake and degradation / membrane docking ...negative regulation of phosphatase activity / positive regulation of sodium:proton antiporter activity / cation-transporting ATPase complex / positive regulation of calcium:sodium antiporter activity / Sodium/Proton exchangers / regulation of the force of heart contraction by cardiac conduction / transporter complex / positive regulation of protein glycosylation / Hyaluronan uptake and degradation / membrane docking / regulation of cardiac muscle cell membrane potential / cellular response to electrical stimulus / positive regulation of phospholipid biosynthetic process / potassium:proton antiporter activity / negative regulation of protein autophosphorylation / sodium:proton antiporter activity / positive regulation of action potential / positive regulation of protein transport / maintenance of cell polarity / regulation of pH / positive regulation of calcineurin-NFAT signaling cascade / sodium ion export across plasma membrane / cardiac muscle cell differentiation / membrane organization / cellular response to acidic pH / sodium ion import across plasma membrane / microtubule bundle formation / protein phosphatase 2B binding / intracellular sodium ion homeostasis / response to acidic pH / regulation of stress fiber assembly / cardiac muscle cell contraction / regulation of cardiac muscle contraction by calcium ion signaling / positive regulation of mitochondrial membrane permeability / cellular response to cold / negative regulation of calcineurin-NFAT signaling cascade / cellular response to antibiotic / regulation of focal adhesion assembly / negative regulation of protein import into nucleus / negative regulation of NF-kappaB transcription factor activity / small GTPase-mediated signal transduction / positive regulation of cardiac muscle hypertrophy / protein kinase inhibitor activity / positive regulation of the force of heart contraction / cellular response to organic cyclic compound / endoplasmic reticulum-Golgi intermediate compartment / protein complex oligomerization / intercalated disc / positive regulation of protein targeting to membrane / potassium channel regulator activity / monoatomic ion transport / cytoplasmic microtubule organization / phosphatidylinositol-4,5-bisphosphate binding / transport vesicle / negative regulation of protein ubiquitination / T-tubule / potassium ion transmembrane transport / cellular response to epinephrine stimulus / response to muscle stretch / protein export from nucleus / proton transmembrane transport / negative regulation of protein phosphorylation / stem cell differentiation / regulation of intracellular pH / negative regulation of protein kinase activity / potassium ion transport / kinase binding / phospholipid binding / cellular response to insulin stimulus / cellular response to mechanical stimulus / calcium-dependent protein binding / microtubule cytoskeleton / cell migration / lamellipodium / protein-macromolecule adaptor activity / cellular response to hypoxia / microtubule binding / positive regulation of cell growth / basolateral plasma membrane / molecular adaptor activity / membrane fusion / calmodulin binding / protein stabilization / positive regulation of apoptotic process / membrane raft / apical plasma membrane / Golgi membrane / focal adhesion / calcium ion binding / negative regulation of apoptotic process / perinuclear region of cytoplasm / cell surface / endoplasmic reticulum / positive regulation of transcription by RNA polymerase II / mitochondrion / extracellular exosome / nucleoplasm / identical protein binding / membrane / nucleus 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: 3.4 Å | ||||||
データ登録者 | Dong, Y. / Gao, Y. / Li, B. / Zhang, X.C. / Zhao, Y. | ||||||
引用 | ジャーナル: Nat Commun / 年: 2021 タイトル: Structure and mechanism of the human NHE1-CHP1 complex. 著者: Yanli Dong / Yiwei Gao / Alina Ilie / DuSik Kim / Annie Boucher / Bin Li / Xuejun C Zhang / John Orlowski / Yan Zhao / 要旨: Sodium/proton exchanger 1 (NHE1) is an electroneutral secondary active transporter present on the plasma membrane of most mammalian cells and plays critical roles in regulating intracellular pH and ...Sodium/proton exchanger 1 (NHE1) is an electroneutral secondary active transporter present on the plasma membrane of most mammalian cells and plays critical roles in regulating intracellular pH and volume homeostasis. Calcineurin B-homologous protein 1 (CHP1) is an obligate binding partner that promotes NHE1 biosynthetic maturation, cell surface expression and pH-sensitivity. Dysfunctions of either protein are associated with neurological disorders. Here, we elucidate structures of the human NHE1-CHP1 complex in both inward- and inhibitor (cariporide)-bound outward-facing conformations. We find that NHE1 assembles as a symmetrical homodimer, with each subunit undergoing an elevator-like conformational change during cation exchange. The cryo-EM map reveals the binding site for the NHE1 inhibitor cariporide, illustrating how inhibitors block transport activity. The CHP1 molecule differentially associates with these two conformational states of each NHE1 monomer, and this association difference probably underlies the regulation of NHE1 pH-sensitivity by CHP1. | ||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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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 | 7dsv.cif.gz | 228.6 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7dsv.ent.gz | 172.5 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7dsv.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
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ds/7dsv ftp://data.pdbj.org/pub/pdb/validation_reports/ds/7dsv | HTTPS FTP |
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-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
#1: タンパク質 | 分子量: 52893.367 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: SLC9A1, APNH1, NHE1 / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: P19634 #2: タンパク質 | 分子量: 21369.830 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CHP1, CHP / 細胞株 (発現宿主): HEK293 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q99653 #3: 化合物 | ChemComp-LBN / 研究の焦点であるリガンドがあるか | N | |
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-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 |
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分子量 |
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由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 6.5 | ||||||||||||||||||||||||||||
試料 | 濃度: 6 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: The NHE1-CHP1 complex was reconstituted into lipid nanodiscs. | ||||||||||||||||||||||||||||
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil | ||||||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK III / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 277 K |
-電子顕微鏡撮影
実験機器 | モデル: Talos Arctica / 画像提供: FEI Company |
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顕微鏡 | モデル: FEI TALOS ARCTICA |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 200 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / 倍率(公称値): 13000 X / 最大 デフォーカス(公称値): 2200 nm / 最小 デフォーカス(公称値): 1200 nm / Cs: 2.7 mm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 50 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) 撮影したグリッド数: 1 / 実像数: 2205 |
電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 20 eV |
画像スキャン | 横: 3838 / 縦: 3710 / 動画フレーム数/画像: 32 / 利用したフレーム数/画像: 1-32 |
-解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 3.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 100503 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: AB INITIO MODEL |