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基本情報
登録情報 | ![]() | |||||||||
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タイトル | Cryo-EM structure of murine Thrombopoietin receptor ectodomain in complex with Tpo | |||||||||
![]() | Refinement map from 3Dflex after non-uniform refinement. Sharpened with deepEMhancer | |||||||||
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![]() | Receptor / cytokine / signalling / haematopoiesis / CYTOKINE-RECEPTOR complex | |||||||||
機能・相同性 | ![]() thrombopoietin receptor activity / basophil homeostasis / regulation of chemokine production / monocyte homeostasis / thrombopoietin-mediated signaling pathway / positive regulation of hematopoietic stem cell proliferation / cell surface receptor signaling pathway via STAT / regulation of stem cell division / positive regulation of lymphocyte proliferation / megakaryocyte differentiation ...thrombopoietin receptor activity / basophil homeostasis / regulation of chemokine production / monocyte homeostasis / thrombopoietin-mediated signaling pathway / positive regulation of hematopoietic stem cell proliferation / cell surface receptor signaling pathway via STAT / regulation of stem cell division / positive regulation of lymphocyte proliferation / megakaryocyte differentiation / positive regulation of megakaryocyte differentiation / positive regulation of platelet formation / eosinophil homeostasis / regulation of stem cell proliferation / myeloid cell differentiation / neutrophil homeostasis / definitive hemopoiesis / platelet formation / megakaryocyte development / homeostasis of number of cells / immunoglobulin mediated immune response / cytokine activity / hormone activity / nuclear membrane / cell population proliferation / positive regulation of MAPK cascade / positive regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / positive regulation of ERK1 and ERK2 cascade / positive regulation of protein phosphorylation / DNA-binding transcription factor activity / external side of plasma membrane / signaling receptor binding / neuronal cell body / positive regulation of cell population proliferation / positive regulation of gene expression / negative regulation of apoptotic process / Golgi apparatus / cell surface / extracellular space / extracellular region / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | ![]() ![]() ![]() ![]() | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.6 Å | |||||||||
![]() | Sarson-Lawrence KS / Hardy JM / Leis A / Babon JJ / Kershaw NJ | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Cryo-EM structure of the extracellular domain of murine Thrombopoietin Receptor in complex with Thrombopoietin. 著者: Kaiseal T G Sarson-Lawrence / Joshua M Hardy / Josephine Iaria / Dina Stockwell / Kira Behrens / Tamanna Saiyed / Cyrus Tan / Leila Jebeli / Nichollas E Scott / Toby A Dite / Nicos A Nicola / ...著者: Kaiseal T G Sarson-Lawrence / Joshua M Hardy / Josephine Iaria / Dina Stockwell / Kira Behrens / Tamanna Saiyed / Cyrus Tan / Leila Jebeli / Nichollas E Scott / Toby A Dite / Nicos A Nicola / Andrew P Leis / Jeffrey J Babon / Nadia J Kershaw / ![]() 要旨: Thrombopoietin (Tpo) is the primary regulator of megakaryocyte and platelet numbers and is required for haematopoetic stem cell maintenance. Tpo functions by binding its receptor (TpoR, a homodimeric ...Thrombopoietin (Tpo) is the primary regulator of megakaryocyte and platelet numbers and is required for haematopoetic stem cell maintenance. Tpo functions by binding its receptor (TpoR, a homodimeric Class I cytokine receptor) and initiating cell proliferation or differentiation. Here we characterise the murine Tpo:TpoR signalling complex biochemically and structurally, using cryo-electron microscopy. Tpo uses opposing surfaces to recruit two copies of receptor, forming a 1:2 complex. Although it binds to the same, membrane-distal site on both receptor chains, it does so with significantly different affinities and its highly glycosylated C-terminal domain is not required. In one receptor chain, a large insertion, unique to TpoR, forms a partially structured loop that contacts cytokine. Tpo binding induces the juxtaposition of the two receptor chains adjacent to the cell membrane. The therapeutic agent romiplostim also targets the cytokine-binding site and the characterisation presented here supports the future development of improved TpoR agonists. | |||||||||
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-EMDBアーカイブ
マップデータ | ![]() | 28.5 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 26.4 KB 26.4 KB | 表示 表示 | ![]() |
FSC (解像度算出) | ![]() | 7.5 KB | 表示 | ![]() |
画像 | ![]() | 117.7 KB | ||
Filedesc metadata | ![]() | 8.2 KB | ||
その他 | ![]() ![]() ![]() | 28.7 MB 28.4 MB 28.4 MB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-検証レポート
文書・要旨 | ![]() | 628.9 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 628.4 KB | 表示 | |
XML形式データ | ![]() | 14.4 KB | 表示 | |
CIF形式データ | ![]() | 18 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 8u18MC M: このマップから作成された原子モデル C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||
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注釈 | Refinement map from 3Dflex after non-uniform refinement. Sharpened with deepEMhancer | ||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 1.02626 Å | ||||||||||||||||||||
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-追加マップ: 3DFlex Refinement Map
ファイル | emd_41805_additional_1.map | ||||||||||||
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注釈 | 3DFlex Refinement 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: 3DFlex Half Map B
ファイル | emd_41805_half_map_1.map | ||||||||||||
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注釈 | 3DFlex Half Map B | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: 3DFlex Half Map A
ファイル | emd_41805_half_map_2.map | ||||||||||||
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注釈 | 3DFlex Half Map A | ||||||||||||
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 : 2:1 complex of the mouse thrombopoietin receptor ectodomain and m...
全体 | 名称: 2:1 complex of the mouse thrombopoietin receptor ectodomain and mouse thrombopoietin |
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要素 |
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-超分子 #1: 2:1 complex of the mouse thrombopoietin receptor ectodomain and m...
超分子 | 名称: 2:1 complex of the mouse thrombopoietin receptor ectodomain and mouse thrombopoietin タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#2 詳細: mTpoR was expressed as a fusion of residues 1-482 of mTPOR, followed by a GCN4 leucine zipper from Saccharomyces cerevisiae, a TEV protease site, the Fc domain of hlgG1, and a C-terminal FLAG ...詳細: mTpoR was expressed as a fusion of residues 1-482 of mTPOR, followed by a GCN4 leucine zipper from Saccharomyces cerevisiae, a TEV protease site, the Fc domain of hlgG1, and a C-terminal FLAG tag. The mTpoR signal peptide (1-25) was cleaved during expression and the Fc tag was cleaved by TEV before complexation. mTPO was expressed as a fusion of the mIL3 secretion signal (cleaved during expression), an N-terminal FLAG-tag followed by residues 22 to 184 of mTPO. |
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分子量 | 理論値: 131.698 KDa |
-超分子 #2: mouse thrombopoietin receptor ectodomain
超分子 | 名称: mouse thrombopoietin receptor ectodomain / 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: ![]() ![]() |
-超分子 #3: mouse thrombopoietin
超分子 | 名称: mouse thrombopoietin / タイプ: complex / ID: 3 / 親要素: 1 / 含まれる分子: #2 |
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由来(天然) | 生物種: ![]() ![]() |
-分子 #1: Thrombopoietin receptor,GCN4 isoform 1
分子 | 名称: Thrombopoietin receptor,GCN4 isoform 1 / タイプ: protein_or_peptide / ID: 1 / コピー数: 2 / 光学異性体: LEVO |
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由来(天然) | 生物種: ![]() ![]() |
分子量 | 理論値: 56.559676 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: QDVFLLALGT EPLNCFSQTF EDLTCFWDEE EAAPSGTYQL LYAYRGEKPR ACPLYSQSVP TFGTRYVCQF PAQDEVRLFF PLHLWVKNV SLNQTLIQRV LFVDSVGLPA PPRVIKARGG SQPGELQIHW EAPAPEISDF LRHELRYGPT DSSNATAPSV I QLLSTETC ...文字列: QDVFLLALGT EPLNCFSQTF EDLTCFWDEE EAAPSGTYQL LYAYRGEKPR ACPLYSQSVP TFGTRYVCQF PAQDEVRLFF PLHLWVKNV SLNQTLIQRV LFVDSVGLPA PPRVIKARGG SQPGELQIHW EAPAPEISDF LRHELRYGPT DSSNATAPSV I QLLSTETC CPTLWMPNPV PVLDQPPCVH PTASQPHGPA PFLTVKGGSC LVSGLQAGKS YWLQLRSQPD GVSLRGSWGP WS FPVTVDL PGDAVTIGLQ CFTLDLKMVT CQWQQQDRTS SQGFFRHSRT RCCPTDRDPT WEKCEEEEPR PGSQPALVSR CHF KSRNDS VIHILVEVTT AQGAVHSYLG SPFWIHQAVL LPTPSLHWRE VSSGRLELEW QHQSSWAAQE TCYQLRYTGE GRED WKVLE PSLGARGGTL ELRPRARYSL QLRARLNGPT YQGPWSAWSP PARVSTGSET AWRMKQLEDK VEELLSKNYH LENEV ARLK KLVGERTGTG GAPENLYFQ UniProtKB: Thrombopoietin receptor, GCN4 isoform 1 |
-分子 #2: Thrombopoietin
分子 | 名称: Thrombopoietin / 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: 19.611674 KDa |
組換発現 | 生物種: ![]() |
配列 | 文字列: ASISARQDYK DDDDKTRQSP VAPACDPRLL NKLLRDSHLL HSRLSQCPDV DPLSIPVLLP AVDFSLGEWK TQTEQSKAQD ILGAVSLLL EGVMAARGQL EPSCLSSLLG QLSGQVRLLL GALQGLLGTQ LPLQGRTTAH KDPNALFLSL QQLLRGKVRF L LLVEGPTL CVRRTLPTTA VPS UniProtKB: Thrombopoietin |
-分子 #4: 2-acetamido-2-deoxy-beta-D-glucopyranose
分子 | 名称: 2-acetamido-2-deoxy-beta-D-glucopyranose / タイプ: ligand / ID: 4 / コピー数: 4 / 式: NAG |
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分子量 | 理論値: 221.208 Da |
Chemical component information | ![]() ChemComp-NAG: |
-分子 #5: alpha-D-mannopyranose
分子 | 名称: alpha-D-mannopyranose / タイプ: ligand / ID: 5 / コピー数: 2 / 式: MAN |
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分子量 | 理論値: 180.156 Da |
Chemical component information | ![]() ChemComp-MAN: |
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 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 | 0.55 mg/mL | |||||||||
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緩衝液 | pH: 7.5 構成要素:
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グリッド | モデル: Quantifoil R1.2/1.3 / 材質: COPPER / メッシュ: 300 / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 60 sec. / 前処理 - 雰囲気: AIR | |||||||||
凍結 | 凍結剤: ETHANE / チャンバー内湿度: 90 % / チャンバー内温度: 277.15 K / 装置: FEI VITROBOT MARK IV 詳細: Blot time of 4 s, blot force of 6 and no wait time or drain time.. | |||||||||
詳細 | TpoR1-479-LeuZ and TPON were combined with a molar ratio of 1:1.5 and applied to superdex 200 10/300 increased column equilibrated in TBS pH7.5. The resultant peaks were analysed by SDS-PAGE and SEC-MALS, and those corresponding to the complex were pooled and concentrated to 0.55 mg/ml. CTAB (Hexadecyl-trimethylammonium bromide) was added right before plunge freezing to a concentration of 0.005% (w/v). |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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特殊光学系 | エネルギーフィルター - 名称: GIF Bioquantum |
撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 6130 / 平均露光時間: 2.38 sec. / 平均電子線量: 50.57 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / Cs: 2.7 mm / 最大 デフォーカス(公称値): 3.6 µm / 最小 デフォーカス(公称値): 0.4 µm / 倍率(公称値): 130000 |
試料ステージ | 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER ホルダー冷却材: NITROGEN |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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画像解析
-原子モデル構築 1
初期モデル | Chain - Source name: AlphaFold / Chain - Initial model type: in silico model 詳細: Multimer complex of the complete assembly was produced using AlphaFold2 on Google CoLab |
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詳細 | ChimeraX was used to perform rigid-body fitting of domains and modelling was performed using Coot and ISOLDE. Refinement was carried out in PHENIX. |
精密化 | 空間: REAL / プロトコル: FLEXIBLE FIT 当てはまり具合の基準: Cross-correlation coefficient |
得られたモデル | ![]() PDB-8u18: |