登録情報 データベース : EMDB / ID : EMD-14707 ダウンロードとリンクタイトル Trypanosoma brucei gambiense ISG65 in complex with human complement component C3 マップデータ 詳細 試料複合体 : Trypanosoma brucei gambiense ISG65 in complex with human complement component C3複合体 : Complement C3 beta chainタンパク質・ペプチド : Complement C3 beta chain複合体 : 65 kDa invariant surface glycoproteinタンパク質・ペプチド : 65 kDa invariant surface glycoprotein, putative複合体 : Complement C3 alpha chainタンパク質・ペプチド : Complement C3 詳細 キーワード complement / complex / IMMUNE SYSTEM機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
C5L2 anaphylatoxin chemotactic receptor binding / oviduct epithelium development / regulation of triglyceride biosynthetic process / positive regulation of activation of membrane attack complex / vertebrate eye-specific patterning / positive regulation of apoptotic cell clearance / complement-mediated synapse pruning / Alternative complement activation / Activation of C3 and C5 / positive regulation of phagocytosis, engulfment ... C5L2 anaphylatoxin chemotactic receptor binding / oviduct epithelium development / regulation of triglyceride biosynthetic process / positive regulation of activation of membrane attack complex / vertebrate eye-specific patterning / positive regulation of apoptotic cell clearance / complement-mediated synapse pruning / Alternative complement activation / Activation of C3 and C5 / positive regulation of phagocytosis, engulfment / positive regulation of lipid storage / positive regulation of G protein-coupled receptor signaling pathway / complement receptor mediated signaling pathway / positive regulation of type IIa hypersensitivity / complement-dependent cytotoxicity / positive regulation of D-glucose transmembrane transport / complement activation / complement activation, alternative pathway / endopeptidase inhibitor activity / neuron remodeling / amyloid-beta clearance / B cell activation / positive regulation of vascular endothelial growth factor production / complement activation, classical pathway / Purinergic signaling in leishmaniasis infection / Peptide ligand-binding receptors / Regulation of Complement cascade / fatty acid metabolic process / Post-translational protein phosphorylation / response to bacterium / positive regulation of receptor-mediated endocytosis / Regulation of Insulin-like Growth Factor (IGF) transport and uptake by Insulin-like Growth Factor Binding Proteins (IGFBPs) / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / positive regulation of angiogenesis / azurophil granule lumen / positive regulation of protein phosphorylation / G alpha (i) signalling events / secretory granule lumen / blood microparticle / immune response / G protein-coupled receptor signaling pathway / inflammatory response / receptor ligand activity / endoplasmic reticulum lumen / signaling receptor binding / Neutrophil degranulation / cell surface / signal transduction / protein-containing complex / extracellular space / extracellular exosome / extracellular region / membrane / plasma membrane 類似検索 - 分子機能 Trypanosome invariant surface glycoprotein / Invariant surface glycoprotein / Complement C3-like, NTR domain / : / : / Complement component 3, CUB domain, second segment / Complement component 3, CUB domain, first segment / Alpha-2-macroglobulin, conserved site / Alpha-2-macroglobulin family thiolester region signature. / Complement C3/4/5, macroglobulin domain MG1 ... Trypanosome invariant surface glycoprotein / Invariant surface glycoprotein / Complement C3-like, NTR domain / : / : / Complement component 3, CUB domain, second segment / Complement component 3, CUB domain, first segment / Alpha-2-macroglobulin, conserved site / Alpha-2-macroglobulin family thiolester region signature. / Complement C3/4/5, macroglobulin domain MG1 / Macroglobulin domain MG1 / Anaphylatoxin, complement system domain / : / Anaphylatoxin domain signature. / Alpha-macro-globulin thiol-ester bond-forming region / Anaphylatoxin, complement system / Anaphylatoxin/fibulin / Anaphylotoxin-like domain / Anaphylatoxin domain profile. / Anaphylatoxin homologous domain / Netrin C-terminal Domain / Netrin module, non-TIMP type / UNC-6/NTR/C345C module / Macroglobulin domain MG4 / Macroglobulin domain MG4 / Netrin domain / NTR domain profile. / Alpha-macroglobulin, receptor-binding / Alpha-macroglobulin, receptor-binding domain superfamily / Macroglobulin domain MG3 / : / A-macroglobulin receptor binding domain / Macroglobulin domain MG3 / A-macroglobulin receptor / Tissue inhibitor of metalloproteinases-like, OB-fold / Alpha-2-macroglobulin / Macroglobulin domain / Alpha-2-macroglobulin, bait region domain / Alpha-macroglobulin-like, TED domain / Alpha-2-macroglobulin family / MG2 domain / A-macroglobulin TED domain / Alpha-2-macroglobulin bait region domain / Alpha-2-Macroglobulin / Alpha-2-macroglobulin family / Terpenoid cyclases/protein prenyltransferase alpha-alpha toroid / Immunoglobulin-like fold 類似検索 - ドメイン・相同性 65 kDa invariant surface glycoprotein, putative / Complement C3 類似検索 - 構成要素生物種 Homo sapiens (ヒト) / Trypanosoma brucei gambiense (ガンビアトリパノソーマ) / 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 : 3.58 Å 詳細 データ登録者Suelzen H / Zoll S 資金援助 チェコ, 1件 詳細 詳細を隠すOrganization Grant number 国 Grant Agency of the Czech Republic 22-21612S チェコ
引用ジャーナル : Nat Commun / 年 : 2023タイトル : Cryo-EM structures of Trypanosoma brucei gambiense ISG65 with human complement C3 and C3b and their roles in alternative pathway restriction.著者: Hagen Sülzen / Jakub Began / Arun Dhillon / Sami Kereïche / Petr Pompach / Jitka Votrubova / Farnaz Zahedifard / Adriana Šubrtova / Marie Šafner / Martin Hubalek / Maaike Thompson / ... 著者 : Hagen Sülzen / Jakub Began / Arun Dhillon / Sami Kereïche / Petr Pompach / Jitka Votrubova / Farnaz Zahedifard / Adriana Šubrtova / Marie Šafner / Martin Hubalek / Maaike Thompson / Martin Zoltner / Sebastian Zoll / 要旨 : African Trypanosomes have developed elaborate mechanisms to escape the adaptive immune response, but little is known about complement evasion particularly at the early stage of infection. Here we ... African Trypanosomes have developed elaborate mechanisms to escape the adaptive immune response, but little is known about complement evasion particularly at the early stage of infection. Here we show that ISG65 of the human-infective parasite Trypanosoma brucei gambiense is a receptor for human complement factor C3 and its activation fragments and that it takes over a role in selective inhibition of the alternative pathway C5 convertase and thus abrogation of the terminal pathway. No deposition of C4b, as part of the classical and lectin pathway convertases, was detected on trypanosomes. We present the cryo-electron microscopy (EM) structures of native C3 and C3b in complex with ISG65 which reveal a set of modes of complement interaction. Based on these findings, we propose a model for receptor-ligand interactions as they occur at the plasma membrane of blood-stage trypanosomes and may facilitate innate immune escape of the parasite. 履歴 登録 2022年4月3日 - ヘッダ(付随情報) 公開 2023年4月5日 - マップ公開 2023年4月5日 - 更新 2024年11月6日 - 現状 2024年11月6日 処理サイト : PDBe / 状態 : 公開
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