+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-28378 | |||||||||
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タイトル | Structure of the C3bB proconvertase in complex with lufaxin and factor Xa | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | Complement / Alternative pathway / inhibitor / sand fly / IMMUNE SYSTEM | |||||||||
機能・相同性 | 機能・相同性情報 alternative-complement-pathway C3/C5 convertase / C5L2 anaphylatoxin chemotactic receptor binding / oviduct epithelium development / regulation of triglyceride biosynthetic process / positive regulation of activation of membrane attack complex / complement binding / vertebrate eye-specific patterning / positive regulation of apoptotic cell clearance / complement-mediated synapse pruning / Alternative complement activation ...alternative-complement-pathway C3/C5 convertase / C5L2 anaphylatoxin chemotactic receptor binding / oviduct epithelium development / regulation of triglyceride biosynthetic process / positive regulation of activation of membrane attack complex / complement binding / vertebrate eye-specific patterning / positive regulation of apoptotic cell clearance / complement-mediated synapse pruning / Alternative complement activation / positive regulation of lipid storage / coagulation factor Xa / positive regulation of phagocytosis, engulfment / positive regulation of G protein-coupled receptor signaling pathway / Activation of C3 and C5 / complement receptor mediated signaling pathway / positive regulation of type IIa hypersensitivity / Defective factor IX causes thrombophilia / Defective cofactor function of FVIIIa variant / Defective F9 variant does not activate FX / positive regulation of D-glucose transmembrane transport / complement-dependent cytotoxicity / complement activation / complement activation, alternative pathway / Extrinsic Pathway of Fibrin Clot Formation / endopeptidase inhibitor activity / neuron remodeling / B cell activation / amyloid-beta clearance / positive regulation of vascular endothelial growth factor production / positive regulation of TOR signaling / Purinergic signaling in leishmaniasis infection / Gamma-carboxylation of protein precursors / Transport of gamma-carboxylated protein precursors from the endoplasmic reticulum to the Golgi apparatus / Common Pathway of Fibrin Clot Formation / Removal of aminoterminal propeptides from gamma-carboxylated proteins / complement activation, classical pathway / Intrinsic Pathway of Fibrin Clot Formation / Peptide ligand-binding receptors / Regulation of Complement cascade / fatty acid metabolic process / Post-translational protein phosphorylation / response to bacterium / phospholipid binding / positive regulation of receptor-mediated endocytosis / Golgi lumen / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / positive regulation of angiogenesis / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / azurophil granule lumen / blood coagulation / toxin activity / G alpha (i) signalling events / secretory granule lumen / blood microparticle / receptor ligand activity / positive regulation of cell migration / inflammatory response / immune response / positive regulation of protein phosphorylation / G protein-coupled receptor signaling pathway / endoplasmic reticulum lumen / external side of plasma membrane / serine-type endopeptidase activity / signaling receptor binding / calcium ion binding / Neutrophil degranulation / cell surface / signal transduction / protein-containing complex / proteolysis / extracellular space / extracellular exosome / extracellular region / plasma membrane 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) / Lutzomyia longipalpis (昆虫) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.53 Å | |||||||||
データ登録者 | Andersen JF / Lei H | |||||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: Blood / 年: 2023 タイトル: A bispecific inhibitor of complement and coagulation blocks activation in complementopathy models via a novel mechanism. 著者: John F Andersen / Haotian Lei / Ethan C Strayer / Tapan Kanai / Van Pham / Xiang-Zuo Pan / Patricia Hessab Alvarenga / Gloria F Gerber / Oluwatoyin A Asojo / Ivo M B Francischetti / Robert A ...著者: John F Andersen / Haotian Lei / Ethan C Strayer / Tapan Kanai / Van Pham / Xiang-Zuo Pan / Patricia Hessab Alvarenga / Gloria F Gerber / Oluwatoyin A Asojo / Ivo M B Francischetti / Robert A Brodsky / Jesus G Valenzuela / José M C Ribeiro / 要旨: Inhibitors of complement and coagulation are present in the saliva of a variety of blood-feeding arthropods that transmit parasitic and viral pathogens. Here, we describe the structure and mechanism ...Inhibitors of complement and coagulation are present in the saliva of a variety of blood-feeding arthropods that transmit parasitic and viral pathogens. Here, we describe the structure and mechanism of action of the sand fly salivary protein lufaxin, which inhibits the formation of the central alternative C3 convertase (C3bBb) and inhibits coagulation factor Xa (fXa). Surface plasmon resonance experiments show that lufaxin stabilizes the binding of serine protease factor B (FB) to C3b but does not detectably bind either C3b or FB alone. The crystal structure of the inhibitor reveals a novel all β-sheet fold containing 2 domains. A structure of the lufaxin-C3bB complex obtained via cryo-electron microscopy (EM) shows that lufaxin binds via its N-terminal domain at an interface containing elements of both C3b and FB. By occupying this spot, the inhibitor locks FB into a closed conformation in which proteolytic activation of FB by FD cannot occur. C3bB-bound lufaxin binds fXa at a separate site in its C-terminal domain. In the cryo-EM structure of a C3bB-lufaxin-fXa complex, the inhibitor binds to both targets simultaneously, and lufaxin inhibits fXa through substrate-like binding of a C-terminal peptide at the active site as well as other interactions in this region. Lufaxin inhibits complement activation in ex vivo models of atypical hemolytic uremic syndrome (aHUS) and paroxysmal nocturnal hemoglobinuria (PNH) as well as thrombin generation in plasma, providing a rationale for the development of a bispecific inhibitor to treat complement-related diseases in which thrombosis is a prominent manifestation. | |||||||||
履歴 |
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-構造の表示
添付画像 |
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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_28378.map.gz | 96.3 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-28378-v30.xml emd-28378.xml | 23.8 KB 23.8 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_28378.png | 108.1 KB | ||
Filedesc metadata | emd-28378.cif.gz | 8.5 KB | ||
その他 | emd_28378_half_map_1.map.gz emd_28378_half_map_2.map.gz | 80.9 MB 80.9 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-28378 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-28378 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_28378_validation.pdf.gz | 955.7 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_28378_full_validation.pdf.gz | 955.2 KB | 表示 | |
XML形式データ | emd_28378_validation.xml.gz | 13 KB | 表示 | |
CIF形式データ | emd_28378_validation.cif.gz | 15.5 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-28378 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-28378 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_28378.map.gz / 形式: CCP4 / 大きさ: 103 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||||||||||||||||||
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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: 0.92 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
-ハーフマップ: half map 1
ファイル | emd_28378_half_map_1.map | ||||||||||||
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注釈 | half map 1 | ||||||||||||
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 2
ファイル | emd_28378_half_map_2.map | ||||||||||||
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注釈 | half map 2 | ||||||||||||
投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
-全体 : The C3 proconvertase from the alternative pathway of complement i...
全体 | 名称: The C3 proconvertase from the alternative pathway of complement in complex with lufaxin, a complement/coagulation inhibitor and coagulation factor Xa |
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要素 |
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-超分子 #1: The C3 proconvertase from the alternative pathway of complement i...
超分子 | 名称: The C3 proconvertase from the alternative pathway of complement in complex with lufaxin, a complement/coagulation inhibitor and coagulation factor Xa タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#3, #5-#6 |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 348.3 KDa |
-分子 #1: Complement C3 beta chain
分子 | 名称: Complement C3 beta chain / 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: 71.39332 KDa |
配列 | 文字列: SPMYSIITPN ILRLESEETM VLEAHDAQGD VPVTVTVHDF PGKKLVLSSE KTVLTPATNH MGNVTFTIPA NREFKSEKGR NKFVTVQAT FGTQVVEKVV LVSLQSGYLF IQTDKTIYTP GSTVLYRIFT VNHKLLPVGR TVMVNIENPE GIPVKQDSLS S QNQLGVLP ...文字列: SPMYSIITPN ILRLESEETM VLEAHDAQGD VPVTVTVHDF PGKKLVLSSE KTVLTPATNH MGNVTFTIPA NREFKSEKGR NKFVTVQAT FGTQVVEKVV LVSLQSGYLF IQTDKTIYTP GSTVLYRIFT VNHKLLPVGR TVMVNIENPE GIPVKQDSLS S QNQLGVLP LSWDIPELVN MGQWKIRAYY ENSPQQVFST EFEVKEYVLP SFEVIVEPTE KFYYIYNEKG LEVTITARFL YG KKVEGTA FVIFGIQDGE QRISLPESLK RIPIEDGSGE VVLSRKVLLD GVQNPRAEDL VGKSLYVSAT VILHSGSDMV QAE RSGIPI VTSPYQIHFT KTPKYFKPGM PFDLMVFVTN PDGSPAYRVP VAVQGEDTVQ SLTQGDGVAK LSINTHPSQK PLSI TVRTK KQELSEAEQA TRTMQALPYS TVGNSNNYLH LSVLRTELRP GETLNVNFLL RMDRAHEAKI RYYTYLIMNK GRLLK AGRQ VREPGQDLVV LPLSITTDFI PSFRLVAYYT LIGASGQREV VADSVWVDVK DSCVGSLVVK SGQSEDRQPV PGQQMT LKI EGDHGARVVL VAVDKGVFVL NKKNKLTQSK IWDVVEKADI GCTPGSGKDY AGVFSDAGLT FTSSSGQQTA QRAELQC PQ PAA UniProtKB: Complement C3 |
-分子 #2: Complement C3b alpha' chain
分子 | 名称: Complement C3b alpha' chain / 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: Homo sapiens (ヒト) |
分子量 | 理論値: 104.073164 KDa |
配列 | 文字列: SNLDEDIIAE ENIVSRSEFP ESWLWNVEDL KEPPKNGIST KLMNIFLKDS ITTWEILAVS MSDKKGICVA DPFEVTVMQD FFIDLRLPY SVVRNEQVEI RAVLYNYRQN QELKVRVELL HNPAFCSLAT TKRRHQQTVT IPPKSSLSVP YVIVPLKTGL Q EVEVKAAV ...文字列: SNLDEDIIAE ENIVSRSEFP ESWLWNVEDL KEPPKNGIST KLMNIFLKDS ITTWEILAVS MSDKKGICVA DPFEVTVMQD FFIDLRLPY SVVRNEQVEI RAVLYNYRQN QELKVRVELL HNPAFCSLAT TKRRHQQTVT IPPKSSLSVP YVIVPLKTGL Q EVEVKAAV YHHFISDGVR KSLKVVPEGI RMNKTVAVRT LDPERLGREG VQKEDIPPAD LSDQVPDTES ETRILLQGTP VA QMTEDAV DAERLKHLIV TPSGCGEQNM IGMTPTVIAV HYLDETEQWE KFGLEKRQGA LELIKKGYTQ QLAFRQPSSA FAA FVKRAP STWLTAYVVK VFSLAVNLIA IDSQVLCGAV KWLILEKQKP DGVFQEDAPV IHQEMIGGLR NNNEKDMALT AFVL ISLQE AKDICEEQVN SLPGSITKAG DFLEANYMNL QRSYTVAIAG YALAQMGRLK GPLLNKFLTT AKDKNRWEDP GKQLY NVEA TSYALLALLQ LKDFDFVPPV VRWLNEQRYY GGGYGSTQAT FMVFQALAQY QKDAPDHQEL NLDVSLQLPS RSSKIT HRI HWESASLLRS EETKENEGFT VTAEGKGQGT LSVVTMYHAK AKDQLTCNKF DLKVTIKPAP ETEKRPQDAK NTMILEI CT RYRGDQDATM SILDISMMTG FAPDTDDLKQ LANGVDRYIS KYELDKAFSD RNTLIIYLDK VSHSEDDCLA FKVHQYFN V ELIQPGAVKV YAYYNLEESC TRFYHPEKED GKLNKLCRDE LCRCAEENCF IQKSDDKVTL EERLDKACEP GVDYVYKTR LVKVQLSNDF DEYIMAIEQT IKSGSDEVQV GQQRTFISPI KCREALKLEE KKHYLMWGLS SDFWGEKPNL SYIIGKDTWV EHWPEEDEC QDEENQKQCQ DLGAFTESMV VFGCPN UniProtKB: Complement C3 |
-分子 #3: Complement factor B
分子 | 名称: Complement factor B / タイプ: protein_or_peptide / ID: 3 / コピー数: 1 / 光学異性体: LEVO / EC番号: alternative-complement-pathway C3/C5 convertase |
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由来(天然) | 生物種: Homo sapiens (ヒト) |
分子量 | 理論値: 85.510617 KDa |
配列 | 文字列: GSNLSPQLCL MPFILGLLSG GVTTTPWSLA RPQGSCSLEG VEIKGGSFRL LQEGQALEYV CPSGFYPYPV QTRTCRSTGS WSTLKTQDQ KTVRKAECRA IHCPRPHDFE NGEYWPRSPY YNVSDEISFH CYDGYTLRGS ANRTCQVNGR WSGQTAICDN G AGYCSNPG ...文字列: GSNLSPQLCL MPFILGLLSG GVTTTPWSLA RPQGSCSLEG VEIKGGSFRL LQEGQALEYV CPSGFYPYPV QTRTCRSTGS WSTLKTQDQ KTVRKAECRA IHCPRPHDFE NGEYWPRSPY YNVSDEISFH CYDGYTLRGS ANRTCQVNGR WSGQTAICDN G AGYCSNPG IPIGTRKVGS QYRLEDSVTY HCSRGLTLRG SQRRTCQEGG SWSGTEPSCQ DSFMYDTPQE VAEAFLSSLT ET IEGVDAE DGHGPGEQQK RKIVLDPSGS MNIYLVLDGS DSIGASNFTG AKKCLVNLIE KVASYGVKPR YGLVTYATYP KIW VKVSEA DSSNADWVTK QLNEINYEDH KLKSGTNTKK ALQAVYSMMS WPDDVPPEGW NRTRHVIILM TDGLHNMGGD PITV IDEIR DLLYIGKDRK NPREDYLDVY VFGVGPLVNQ VNINALASKK DNEQHVFKVK DMENLEDVFY QMIDESQSLS LCGMV WEHR KGTDYHKQPW QAKISVIRPS KGHESCMGAV VSEYFVLTAA HCFTVDDKEH SIKVSVGGEK RDLEIEVVLF HPNYNI NGK KEAGIPEFYD YDVALIKLKN KLKYGQTIRP ICLPCTEGTT RALRLPPTTT CQQQKEELLP AQDIKALFVS EEEKKLT RK EVYIKNGDKK GSCERDAQYA PGYDKVKDIS EVVTPRFLCT GGVSPYADPN TCRGDSGGPL IVHKRSRFIQ VGVISWGV V DVCKNQKRQK QVPAHARDFH INLFQVLPWL KEKLQDEDLG FL UniProtKB: Complement factor B |
-分子 #4: Lufaxin
分子 | 名称: Lufaxin / 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: Lutzomyia longipalpis (昆虫) |
分子量 | 理論値: 33.354586 KDa |
組換発現 | 生物種: Homo sapiens (ヒト) |
配列 | 文字列: DGDEYFIGKY KEKDETLFFA SYGLKRDPCQ IVLGYKCSNN QTHFVLNFKT NKKSCISAIK LTSYPKINQN SDLTRNLYCQ TGGIGTDNC KLVFKKRKRQ IAANIEIYGI PAKKCSFKDR YIGADPLHVD SYGLSYQFDQ EHGWNLERNN IFKDTRFSTE V FYHKNGLF ...文字列: DGDEYFIGKY KEKDETLFFA SYGLKRDPCQ IVLGYKCSNN QTHFVLNFKT NKKSCISAIK LTSYPKINQN SDLTRNLYCQ TGGIGTDNC KLVFKKRKRQ IAANIEIYGI PAKKCSFKDR YIGADPLHVD SYGLSYQFDQ EHGWNLERNN IFKDTRFSTE V FYHKNGLF NTQITYLAEE DSFSEAREIT AKDIKKKFSI ILPNEEYKRI SFLDVYWFQE TMRKKPKYPY IHYNGECSNE NK TCELVFD TDELMTYALV KVFTNPESDG SRLKEEDLGR GHHHHHH UniProtKB: Lufaxin |
-分子 #5: Factor X light chain
分子 | 名称: Factor X light chain / タイプ: protein_or_peptide / ID: 5 / 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: 15.210793 KDa |
配列 | 文字列: EEMKKGHLER ECMEETCSYE EAREVFEDSD KTNEFWNKYK DGDQCETSPC QNQGKCKDGL GEYTCTCLEG FEGKNCELFT RKLCSLDNG DCDQFCHEEQ NSVVCSCARG YTLADNGKAC IPTGPYPCGK QTLER UniProtKB: Coagulation factor X |
-分子 #6: Activated factor Xa heavy chain
分子 | 名称: Activated factor Xa heavy chain / タイプ: protein_or_peptide / ID: 6 / 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: 28.550596 KDa |
配列 | 文字列: IVGGQECKDG ECPWQALLIN EENEGFCGGT ILSEFYILTA AHCLYQAKRF KVRVGDRNTE QEEGGEAVHE VEVVIKHNRF TKETYDFDI AVLRLKTPIT FRMNVAPACL PERDWAESTL MTQKTGIVSG FGRTHEKGRQ STRLKMLEVP YVDRNSCKLS S SFIITQNM ...文字列: IVGGQECKDG ECPWQALLIN EENEGFCGGT ILSEFYILTA AHCLYQAKRF KVRVGDRNTE QEEGGEAVHE VEVVIKHNRF TKETYDFDI AVLRLKTPIT FRMNVAPACL PERDWAESTL MTQKTGIVSG FGRTHEKGRQ STRLKMLEVP YVDRNSCKLS S SFIITQNM FCAGYDTKQE DACQGDSGGP HVTRFKDTYF VTGIVSWGEG CARKGKYGIY TKVTAFLKWI DRSMKTRGLP KA KSHAPEV ITSSPLK UniProtKB: Coagulation factor X |
-分子 #8: MAGNESIUM ION
分子 | 名称: MAGNESIUM ION / タイプ: ligand / ID: 8 / コピー数: 1 / 式: MG |
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分子量 | 理論値: 24.305 Da |
-分子 #9: 2-acetamido-2-deoxy-beta-D-glucopyranose
分子 | 名称: 2-acetamido-2-deoxy-beta-D-glucopyranose / タイプ: ligand / ID: 9 / コピー数: 2 / 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 |
-試料調製
濃度 | 1.5 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: C-flat-1.2/1.3 / 材質: GOLD / 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 | ||||||||||||
凍結 | 凍結剤: ETHANE | ||||||||||||
詳細 | The sample was monodisperse |
-電子顕微鏡法
顕微鏡 | TFS GLACIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 58.31 e/Å2 |
電子線 | 加速電圧: 200 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2.2 µm / 最小 デフォーカス(公称値): 0.3 µm / 倍率(公称値): 45000 |