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データを開く
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基本情報
| 登録情報 | ![]() | ||||||||||||
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| タイトル | Human SCNN1B-SCNN1G ENaC dimers | ||||||||||||
マップデータ | Map of beta gamma ENaC dimers with Fabs and one of the two dimers masked. | ||||||||||||
試料 |
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キーワード | Ion channel / MEMBRANE PROTEIN | ||||||||||||
| 機能・相同性 | 機能・相同性情報sensory perception of salty taste / Sensory perception of salty taste / neutrophil-mediated killing of bacterium / aldosterone metabolic process / leukocyte activation involved in inflammatory response / cellular response to vasopressin / sensory perception of sour taste / cellular response to aldosterone / sodium channel complex / epithelial fluid transport ...sensory perception of salty taste / Sensory perception of salty taste / neutrophil-mediated killing of bacterium / aldosterone metabolic process / leukocyte activation involved in inflammatory response / cellular response to vasopressin / sensory perception of sour taste / cellular response to aldosterone / sodium channel complex / epithelial fluid transport / mucus secretion / sodium ion homeostasis / renal system process / neutrophil activation involved in immune response / artery smooth muscle contraction / multicellular organismal-level water homeostasis / potassium ion homeostasis / intracellular sodium ion homeostasis / sodium ion import across plasma membrane / lung alveolus development / ligand-gated sodium channel activity / WW domain binding / response to food / erythrocyte homeostasis / ciliary transition zone / monoatomic ion channel activity / cellular response to acidic pH / cytoplasmic vesicle membrane / sodium ion transmembrane transport / regulation of blood pressure / Stimuli-sensing channels / multicellular organism growth / gene expression / apical plasma membrane / response to xenobiotic stimulus / external side of plasma membrane / extracellular exosome / nucleoplasm / plasma membrane 類似検索 - 分子機能 | ||||||||||||
| 生物種 | Homo sapiens (ヒト) / ![]() | ||||||||||||
| 手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.68 Å | ||||||||||||
データ登録者 | Houser A / Baconguis I | ||||||||||||
| 資金援助 | 米国, 3件
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引用 | ジャーナル: Structure / 年: 2025タイトル: Structural insights into subunit-dependent functional regulation in epithelial sodium channels. 著者: Alexandra Houser / Isabelle Baconguis / ![]() 要旨: Epithelial sodium channels (ENaCs) play a crucial role in Na reabsorption in mammals. To date, four subunits have been identified-α, β, γ, and δ-believed to form different heteromeric complexes. ...Epithelial sodium channels (ENaCs) play a crucial role in Na reabsorption in mammals. To date, four subunits have been identified-α, β, γ, and δ-believed to form different heteromeric complexes. Currently, only the structure of the αβγ complex is known. To investigate the formation of channels with different subunit compositions and to determine how each subunit contributes to distinct channel properties, we co-expressed human δ, β, and γ. Using single-particle cryoelectron microscopy, we observed three distinct ENaC complexes. The structures unveil a pattern in which β and γ positions are conserved among the different complexes while the α position in αβγ trimer is occupied by either δ or another β. The δ subunit induces structural rearrangements in the γ subunit, which may contribute to the differences in channel activity between αβγ and δβγ channels. These structural changes provide molecular insights into how ENaC subunit composition modulates channel function. | ||||||||||||
| 履歴 |
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構造の表示
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ダウンロードとリンク
-EMDBアーカイブ
| マップデータ | emd_44896.map.gz | 161.5 MB | EMDBマップデータ形式 | |
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| ヘッダ (付随情報) | emd-44896-v30.xml emd-44896.xml | 30.2 KB 30.2 KB | 表示 表示 | EMDBヘッダ |
| FSC (解像度算出) | emd_44896_fsc.xml emd_44896_fsc_2.xml | 15.4 KB 14.6 KB | 表示 表示 | FSCデータファイル |
| 画像 | emd_44896.png | 44.8 KB | ||
| マスクデータ | emd_44896_msk_1.map | 325 MB | マスクマップ | |
| Filedesc metadata | emd-44896.cif.gz | 8.3 KB | ||
| その他 | emd_44896_additional_1.map.gz emd_44896_additional_2.map.gz emd_44896_half_map_1.map.gz emd_44896_half_map_2.map.gz | 160.8 MB 306.6 MB 301.6 MB 301.6 MB | ||
| アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-44896 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-44896 | HTTPS FTP |
-関連構造データ
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リンク
| EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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マップ
| ファイル | ダウンロード / ファイル: emd_44896.map.gz / 形式: CCP4 / 大きさ: 325 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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| 注釈 | Map of beta gamma ENaC dimers with Fabs and one of the two dimers masked. | ||||||||||||||||||||||||||||||||||||
| 投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
| ボクセルのサイズ | X=Y=Z: 0.826 Å | ||||||||||||||||||||||||||||||||||||
| 密度 |
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| 対称性 | 空間群: 1 | ||||||||||||||||||||||||||||||||||||
| 詳細 | EMDB XML:
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-添付データ
-マスク #1
| ファイル | emd_44896_msk_1.map | ||||||||||||
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| 投影像・断面図 |
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| 密度ヒストグラム |
-追加マップ: Raw map of beta gamma ENaC dimers. Collected...
| ファイル | emd_44896_additional_1.map | ||||||||||||
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| 注釈 | Raw map of beta gamma ENaC dimers. Collected with a raw pixel size of 0.413. Micrographs were F-cropped by 0.5, box size for particles is 440. | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
-追加マップ: Sharpened map of masked single beta gamma dimer...
| ファイル | emd_44896_additional_2.map | ||||||||||||
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| 注釈 | Sharpened map of masked single beta gamma dimer used for model building. | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
-ハーフマップ: Half map A of the raw unmasked map
| ファイル | emd_44896_half_map_1.map | ||||||||||||
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| 注釈 | Half map A of the raw unmasked map | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
-ハーフマップ: Half map B of the raw unmasked map
| ファイル | emd_44896_half_map_2.map | ||||||||||||
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| 注釈 | Half map B of the raw unmasked map | ||||||||||||
| 投影像・断面図 |
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| 密度ヒストグラム |
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試料の構成要素
-全体 : Amiloride-sensitive sodium channel subunits BETA, and GAMMA in co...
| 全体 | 名称: Amiloride-sensitive sodium channel subunits BETA, and GAMMA in complex with 10D4 Fab |
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| 要素 |
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-超分子 #1: Amiloride-sensitive sodium channel subunits BETA, and GAMMA in co...
| 超分子 | 名称: Amiloride-sensitive sodium channel subunits BETA, and GAMMA in complex with 10D4 Fab タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#4 / 詳細: Fab fragment from 10D4 IgG |
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-超分子 #2: Human beta subunit isoform 1
| 超分子 | 名称: Human beta subunit isoform 1 / タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #1 |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
-超分子 #3: Human gamma subunit isoform 1
| 超分子 | 名称: Human gamma subunit isoform 1 / タイプ: complex / ID: 3 / 親要素: 1 / 含まれる分子: #3 |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
-超分子 #4: Fab fragment from 10D4 IgG
| 超分子 | 名称: Fab fragment from 10D4 IgG / タイプ: complex / ID: 4 / 親要素: 1 / 含まれる分子: #2, #4 |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
-分子 #1: Amiloride-sensitive sodium channel subunit beta
| 分子 | 名称: Amiloride-sensitive sodium channel subunit beta / タイプ: protein_or_peptide / ID: 1 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 72.728891 KDa |
| 組換発現 | 生物種: Homo sapiens (ヒト) |
| 配列 | 文字列: MHVKKYLLKG LHRLQKGPGY TYKELLVWYC DNTNTHGPKR IICEGPKKKA MWFLLTLLFA ALVCWQWGIF IRTYLSWEVS VSLSVGFKT MDFPAVTICN ASPFKYSKIK HLLKDLDELM EAVLERILAP ELSHANATRN LNFSIWNHTP LVLIDERNPH H PMVLDLFG ...文字列: MHVKKYLLKG LHRLQKGPGY TYKELLVWYC DNTNTHGPKR IICEGPKKKA MWFLLTLLFA ALVCWQWGIF IRTYLSWEVS VSLSVGFKT MDFPAVTICN ASPFKYSKIK HLLKDLDELM EAVLERILAP ELSHANATRN LNFSIWNHTP LVLIDERNPH H PMVLDLFG DNHNGLTSSS ASEKICNAHG CKMAMRLCSL NRTQCTFRNF TSATQALTEW YILQATNIFA QVPQQELVEM SY PGEQMIL ACLFGAEPCN YRNFTSIFYP HYGNCYIFNW GMTEKALPSA NPGTEFGLKL ILDIGQEDYV PFLASTAGVR LML HEQRSY PFIRDEGIYA MSGTETSIGV LVDKLQRMGE PYSPCTVNGS EVPVQNFYSD YNTTYSIQAC LRSCFQDHMI RNCN CGHYL YPLPRGEKYC NNRDFPDWAH CYSDLQMSVA QRETCIGMCK ESCNDTQYKM TISMADWPSE ASEDWIFHVL SQERD QSTN ITLSRKGIVK LNIYFQEFNY RTIEESAANN IVWLLSNLGG QFGFWMGGSV LCLIEFGEII IDFVWITIIK LVALAK SLR QRRAQASYAG PPPTVAELVE AHTNFGFQPD TAPRSPNTGP YPSEQALPIP GTPPPNYDSL RLQPLDVIES DSEGDAI UniProtKB: Epithelial sodium channel subunit beta |
-分子 #2: 10D4 Fab
| 分子 | 名称: 10D4 Fab / タイプ: protein_or_peptide / ID: 2 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: ![]() |
| 分子量 | 理論値: 9.890183 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) ...文字列: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK) (UNK)(UNK)(UNK) |
-分子 #3: Amiloride-sensitive sodium channel subunit gamma
| 分子 | 名称: Amiloride-sensitive sodium channel subunit gamma / タイプ: protein_or_peptide / ID: 3 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 分子量 | 理論値: 74.352984 KDa |
| 組換発現 | 生物種: Homo sapiens (ヒト) |
| 配列 | 文字列: MAPGEKIKAK IKKNLPVTGP QAPTIKELMR WYCLNTNTHG CRRIVVSRGR LRRLLWIGFT LTAVALILWQ CALLVFSFYT VSVSIKVHF RKLDFPAVTI CNINPYKYST VRHLLADLEQ ETREALKSLY GFPESRKRRE AESWNSVSEG KQPRFSHRIP L LIFDQDEK ...文字列: MAPGEKIKAK IKKNLPVTGP QAPTIKELMR WYCLNTNTHG CRRIVVSRGR LRRLLWIGFT LTAVALILWQ CALLVFSFYT VSVSIKVHF RKLDFPAVTI CNINPYKYST VRHLLADLEQ ETREALKSLY GFPESRKRRE AESWNSVSEG KQPRFSHRIP L LIFDQDEK GKARDFFTGR KRKVGGSIIH KASNVMHIES KQVVGFQLCS NDTSDCATYT FSSGINAIQE WYKLHYMNIM AQ VPLEKKI NMSYSAEELL VTCFFDGVSC DARNFTLFHH PMHGNCYTFN NRENETILST SMGGSEYGLQ VILYINEEEY NPF LVSSTG AKVIIHRQDE YPFVEDVGTE IETAMVTSIG MHLTESFKLS EPYSQCTEDG SDVPIRNIYN AAYSLQICLH SCFQ TKMVE KCGCAQYSQP LPPAANYCNY QQHPNWMYCY YQLHRAFVQE ELGCQSVCKE ACSFKEWTLT TSLAQWPSVV SEKWL LPVL TWDQGRQVNK KLNKTDLAKL LIFYKDLNQR SIMESPANSI EMLLSNFGGQ LGLWMSCSVV CVIEIIEVFF IDFFSI IAR RQWQKAKEWW AWKQAPPCPE APRSPQGQDN PALDIDDDLP TFNSALHLPP ALGTQVPGTP PPKYNTLRLE RAFSNQL TD TQMLDEL UniProtKB: Epithelial sodium channel subunit gamma |
-分子 #4: 10D4 Fab
| 分子 | 名称: 10D4 Fab / タイプ: protein_or_peptide / ID: 4 / コピー数: 1 / 光学異性体: LEVO |
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| 由来(天然) | 生物種: ![]() |
| 分子量 | 理論値: 6.230672 KDa |
| 組換発現 | 生物種: ![]() |
| 配列 | 文字列: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK) ...文字列: (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) (UNK)(UNK) (UNK)(UNK)(UNK)(UNK)(UNK)(UNK)(UNK) |
-分子 #7: 2-acetamido-2-deoxy-beta-D-glucopyranose
| 分子 | 名称: 2-acetamido-2-deoxy-beta-D-glucopyranose / タイプ: ligand / ID: 7 / コピー数: 5 / 式: NAG |
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| 分子量 | 理論値: 221.208 Da |
| Chemical component information | ![]() ChemComp-NAG: |
-実験情報
-構造解析
| 手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
| 試料の集合状態 | particle |
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試料調製
| 濃度 | 2.275 mg/mL | ||||||||||||
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| 緩衝液 | pH: 7.4 構成要素:
詳細: Vitrobot blot parameters were set to a wait time of 0s, blot time of 2s, and a blot force of 1 | ||||||||||||
| グリッド | モデル: Quantifoil R2/1 / 材質: GOLD / メッシュ: 200 / 支持フィルム - 材質: CARBON / 支持フィルム - トポロジー: HOLEY / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 60 sec. / 前処理 - 雰囲気: OTHER | ||||||||||||
| 凍結 | 凍結剤: ETHANE / チャンバー内湿度: 70 % / チャンバー内温度: 295.15 K / 装置: FEI VITROBOT MARK IV | ||||||||||||
| 詳細 | Monodisperse sample of beta and gamma ENaC with 10D4 Fab for the beta subunit |
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電子顕微鏡法
| 顕微鏡 | FEI TITAN KRIOS |
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| 撮影 | フィルム・検出器のモデル: FEI FALCON III (4k x 4k) 検出モード: SUPER-RESOLUTION / 撮影したグリッド数: 1 / 実像数: 6021 / 平均電子線量: 50.0 e/Å2 |
| 電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
| 電子光学系 | 照射モード: SPOT SCAN / 撮影モード: DIFFRACTION / Cs: 2.7 mm / 最大 デフォーカス(公称値): 2.5 µm / 最小 デフォーカス(公称値): 0.8 µm |
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
ムービー
コントローラー
万見について




キーワード
Homo sapiens (ヒト)
データ登録者
米国, 3件
引用




Z (Sec.)
Y (Row.)
X (Col.)





























































解析
FIELD EMISSION GUN


