+
データを開く
-
基本情報
| 登録情報 | データベース: PDB / ID: 9i2h | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| タイトル | A 3.3 angstrom cryo-EM structure of an engineered high-affinity human prothrombinase complex | |||||||||||||||||||||||||||
要素 |
| |||||||||||||||||||||||||||
キーワード | BLOOD CLOTTING / enzyme / complex / prothrombinase | |||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報response to vitamin K / coagulation factor Xa / platelet alpha granule / Cargo concentration in the ER / COPII-coated ER to Golgi transport vesicle / Defective factor IX causes thrombophilia / Defective cofactor function of FVIIIa variant / Defective F9 variant does not activate FX / COPII-mediated vesicle transport / : ...response to vitamin K / coagulation factor Xa / platelet alpha granule / Cargo concentration in the ER / COPII-coated ER to Golgi transport vesicle / Defective factor IX causes thrombophilia / Defective cofactor function of FVIIIa variant / Defective F9 variant does not activate FX / COPII-mediated vesicle transport / : / blood circulation / positive regulation of TOR signaling / Transport of gamma-carboxylated protein precursors from the endoplasmic reticulum to the Golgi apparatus / : / Gamma-carboxylation of protein precursors / Removal of aminoterminal propeptides from gamma-carboxylated proteins / : / endoplasmic reticulum-Golgi intermediate compartment membrane / platelet alpha granule lumen / Post-translational protein phosphorylation / phospholipid binding / Golgi lumen / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / blood coagulation / Platelet degranulation / extracellular vesicle / positive regulation of cell migration / endoplasmic reticulum lumen / copper ion binding / serine-type endopeptidase activity / external side of plasma membrane / calcium ion binding / proteolysis / : / extracellular region / membrane / 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: 3.28 Å | |||||||||||||||||||||||||||
データ登録者 | Huntington, J.A. / Faille, A. / Ustok, F.I. | |||||||||||||||||||||||||||
| 資金援助 | 英国, 2件
| |||||||||||||||||||||||||||
引用 | ジャーナル: Blood / 年: 2026タイトル: A 3.3-Å cryo-EM structure of an engineered high-affinity human prothrombinase complex. 著者: Fatma Işık Üstok / Alexandre Faille / James A Huntington / ![]() 要旨: Thrombin is generated from prothrombin through cleavage at 2 sites by the enzyme prothrombinase, composed of factor Xa (fXa) and fVa. The affinity of fXa for fVa is low, with assembly and function ...Thrombin is generated from prothrombin through cleavage at 2 sites by the enzyme prothrombinase, composed of factor Xa (fXa) and fVa. The affinity of fXa for fVa is low, with assembly and function dependent on phospholipid (PL) membranes. Some snakes have evolved venom versions of fXa that bind to fVa with high affinity and efficiently activate prothrombin in the absence of PL. We created a similar high-affinity, PL-independent human prothrombinase with 17 mutations to human fXa (M17). The increase in affinity enabled cryogenic electron microscopy (cryo-EM) structure determination of M17-prothrombinase to a resolution of 3.3 Å. All protein domains were well resolved in the map, except for the γ-carboxyglutamic acid domain of fXa. The main contacts involve the serine protease and epidermal growth factor-like domain 2 (EGF2) domains of fXa and the A2 and A3 domains of fVa, resulting in the burying of a total surface area of 4900 Å2. The map is of sufficient quality to resolve side-chain interactions, including several key M17 mutations. To aid in the placement of the loop C-terminal to the A2 domain (a2-loop), we solved a high-resolution crystal structure of fXa in complex with a synthetic a2 peptide. The acidic a2-loop interacts with the basic heparin-binding site of fXa, involving a conserved antiparallel β-strand interaction. The M17-prothrombinase structure is compatible with data from biochemical and mutagenesis research and provides important new insights into the assembly and function of the prothrombinase complex. | |||||||||||||||||||||||||||
| 履歴 |
|
-
構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
|---|
-
ダウンロードとリンク
-
ダウンロード
| PDBx/mmCIF形式 | 9i2h.cif.gz | 448.4 KB | 表示 | PDBx/mmCIF形式 |
|---|---|---|---|---|
| PDB形式 | pdb9i2h.ent.gz | 表示 | PDB形式 | |
| PDBx/mmJSON形式 | 9i2h.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/i2/9i2h ftp://data.pdbj.org/pub/pdb/validation_reports/i2/9i2h | HTTPS FTP |
|---|
-関連構造データ
| 関連構造データ | ![]() 52585MC ![]() 9i24C 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 ( |
|---|---|
| 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 |
|
-
要素
-タンパク質 , 2種, 2分子 HL
| #1: タンパク質 | 分子量: 28789.916 Da / 分子数: 1 変異: E129N, S130E, T132K, K134D, N166H, K169M, S173D, I175R, A233R, D239K 由来タイプ: 組換発現 詳細: Mutations given using chymotrypsin template numbering as in the coordinates. 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: F10 / プラスミド: pCEP4 / 細胞株 (発現宿主): HEK/EBNA / 発現宿主: Cytomegalovirus (ウイルス) / 参照: UniProt: P00742 |
|---|---|
| #2: タンパク質 | 分子量: 15765.613 Da / 分子数: 1 / 変異: S90R, L91A, D92F, H101K, E102R, E103V, N105S / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: F10 / プラスミド: pCEP4 / 細胞株 (発現宿主): HEK/EBNA / 発現宿主: Cytomegalovirus (ウイルス) / 参照: UniProt: P00742 |
-Coagulation factor V ... , 2種, 2分子 AB
| #3: タンパク質 | 分子量: 81354.453 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: TYS is a sulphated Tyrosine. / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: F5 / Cell (発現宿主): BHK-M / 発現宿主: unidentified plasmid (未定義) / 参照: UniProt: P12259 |
|---|---|
| #4: タンパク質 | 分子量: 75283.008 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: F5 / Cell (発現宿主): BHK-M / 発現宿主: unidentified plasmid (未定義) / 参照: UniProt: P12259 |
-糖 , 4種, 4分子
| #5: 多糖 | alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-[alpha-L-fucopyranose-(1-6)]2-acetamido-2-deoxy-beta-D-glucopyranose |
|---|---|
| #6: 多糖 | alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2- ...alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
| #7: 多糖 | alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)-alpha-D- ...alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-3)-[alpha-D-mannopyranose-(1-6)-alpha-D-mannopyranose-(1-6)]beta-D-mannopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose |
| #8: 多糖 | alpha-L-fucopyranose-(1-6)-2-acetamido-2-deoxy-beta-D-glucopyranose |
-非ポリマー , 4種, 5分子 






| #9: 化合物 | | #10: 化合物 | ChemComp-NA / | #11: 化合物 | ChemComp-0GJ / | #12: 化合物 | ChemComp-CU / | |
|---|
-詳細
| 研究の焦点であるリガンドがあるか | Y |
|---|---|
| Has protein modification | Y |
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
|---|---|
| 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: prothrombinase, a complex of fVa and fXa / タイプ: COMPLEX 詳細: M17-prothrombinase was formed by mixing fVa with EGRCK-inhibited M17-fXa at a 1:6 molar ratio with a final concentration of 1.68uM in 20mM HEPES pH 7.5, 150mM NaCl and 5mM CaCl2 Entity ID: #1-#4 / 由来: RECOMBINANT |
|---|---|
| 分子量 | 実験値: NO |
| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: unidentified (未定義) |
| 緩衝液 | pH: 7.5 / 詳細: 20mM HEPES, 150mM NaCl and 5mM CaCl2 |
| 試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: M17-prothrombinase was formed by mixing fVa with EGRCK-inhibited M17-fXa at a 1:6 molar ratio with a final concentration of 1.68uM |
| 試料支持 | 詳細: using a Pelco EasiGlow / グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R0.6/1 |
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 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 |
|---|---|
| 顕微鏡 | モデル: TFS 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): 2000 nm / 最小 デフォーカス(公称値): 1000 nm |
| 撮影 | 電子線照射量: 45.74 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: 1.21.1_5286 / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.28 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 70154 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
| 原子変位パラメータ | Biso mean: 110.91 Å2 | ||||||||||||||||||||||||
| 拘束条件 |
|
ムービー
コントローラー
万見について




Homo sapiens (ヒト)
英国, 2件
引用

PDBj












Cytomegalovirus (ウイルス)
FIELD EMISSION GUN