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データを開く
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基本情報
| 登録情報 | データベース: PDB / ID: 8vsp | ||||||
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| タイトル | Cryo-EM structure of human invariant chain in complex with HLA-DQ | ||||||
要素 |
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キーワード | IMMUNE SYSTEM / Antigen presentation / membrane protein / trimeric complex | ||||||
| 機能・相同性 | 機能・相同性情報negative regulation of peptide secretion / macrophage migration inhibitory factor signaling pathway / NOS2-CD74 complex / MHC class II protein binding, via antigen binding groove / antigen processing and presentation of endogenous antigen / positive regulation of dendritic cell antigen processing and presentation / macrophage migration inhibitory factor binding / negative regulation of T cell differentiation / positive regulation of macrophage migration inhibitory factor signaling pathway / protein trimerization ...negative regulation of peptide secretion / macrophage migration inhibitory factor signaling pathway / NOS2-CD74 complex / MHC class II protein binding, via antigen binding groove / antigen processing and presentation of endogenous antigen / positive regulation of dendritic cell antigen processing and presentation / macrophage migration inhibitory factor binding / negative regulation of T cell differentiation / positive regulation of macrophage migration inhibitory factor signaling pathway / protein trimerization / macrophage migration inhibitory factor receptor complex / positive regulation of cytokine-mediated signaling pathway / positive regulation of prostaglandin biosynthetic process / T cell activation involved in immune response / T cell selection / positive regulation of type 2 immune response / MHC class II receptor activity / host-mediated suppression of symbiont invasion / negative thymic T cell selection / MHC class II protein binding / negative regulation of mature B cell apoptotic process / positive regulation of kinase activity / positive regulation of monocyte differentiation / positive thymic T cell selection / vacuole / CD4 receptor binding / cytokine receptor activity / positive regulation of neutrophil chemotaxis / positive regulation of chemokine (C-X-C motif) ligand 2 production / prostaglandin biosynthetic process / positive regulation of macrophage cytokine production / positive regulation of T cell differentiation / transport vesicle membrane / regulation of macrophage activation / negative regulation of intrinsic apoptotic signaling pathway in response to DNA damage by p53 class mediator / antigen processing and presentation / Translocation of ZAP-70 to Immunological synapse / Phosphorylation of CD3 and TCR zeta chains / nitric-oxide synthase binding / cytokine binding / negative regulation of DNA damage response, signal transduction by p53 class mediator / : / immunoglobulin mediated immune response / humoral immune response / Generation of second messenger molecules / Co-inhibition by PD-1 / response to type II interferon / positive regulation of chemokine production / positive regulation of B cell proliferation / multivesicular body / protein folding chaperone / MHC class II antigen presentation / lysosomal lumen / negative regulation of cell migration / trans-Golgi network membrane / Cell surface interactions at the vascular wall / positive regulation of interleukin-8 production / lumenal side of endoplasmic reticulum membrane / peptide antigen assembly with MHC class II protein complex / intracellular protein transport / MHC class II protein complex / clathrin-coated endocytic vesicle membrane / ER to Golgi transport vesicle membrane / antigen processing and presentation of exogenous peptide antigen via MHC class II / positive regulation of immune response / positive regulation of T cell activation / peptide antigen binding / positive regulation of interleukin-6 production / positive regulation of protein phosphorylation / positive regulation of fibroblast proliferation / Interferon gamma signaling / MHC class II protein complex binding / endocytic vesicle membrane / late endosome membrane / Downstream TCR signaling / late endosome / T cell receptor signaling pathway / amyloid-beta binding / protein-containing complex assembly / adaptive immune response / positive regulation of viral entry into host cell / positive regulation of ERK1 and ERK2 cascade / lysosome / positive regulation of canonical NF-kappaB signal transduction / positive regulation of MAPK cascade / protein stabilization / immune response / Golgi membrane / lysosomal membrane / external side of plasma membrane / positive regulation of gene expression / negative regulation of apoptotic process / positive regulation of DNA-templated transcription / cell surface / protein-containing complex / extracellular exosome / identical protein binding / nucleus / 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: 3.12 Å | ||||||
データ登録者 | Wang, N. / Caveney, N.A. / Jude, K.M. / Garcia, K.C. | ||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Proc Natl Acad Sci U S A / 年: 2024タイトル: Structural insights into human MHC-II association with invariant chain. 著者: Nan Wang / Deepa Waghray / Nathanael A Caveney / Kevin M Jude / K Christopher Garcia / ![]() 要旨: The loading of processed peptides on to major histocompatibility complex II (MHC-II) molecules for recognition by T cells is vital to cell-mediated adaptive immunity. As part of this process, MHC-II ...The loading of processed peptides on to major histocompatibility complex II (MHC-II) molecules for recognition by T cells is vital to cell-mediated adaptive immunity. As part of this process, MHC-II associates with the invariant chain (Ii) during biosynthesis in the endoplasmic reticulum to prevent premature peptide loading and to serve as a scaffold for subsequent proteolytic processing into MHC-II-CLIP. Cryo-electron microscopy structures of full-length Human Leukocyte Antigen-DR (HLA-DR) and HLA-DQ complexes associated with Ii, resolved at 3.0 to 3.1 Å, elucidate the trimeric assembly of the HLA/Ii complex and define atomic-level interactions between HLA, Ii transmembrane domains, loop domains, and class II-associated invariant chain peptides (CLIP). Together with previous structures of MHC-II peptide loading intermediates DO and DM, our findings complete the structural path governing class II antigen presentation. | ||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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ダウンロードとリンク
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ダウンロード
| PDBx/mmCIF形式 | 8vsp.cif.gz | 316.8 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb8vsp.ent.gz | 238.1 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 8vsp.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
| 文書・要旨 | 8vsp_validation.pdf.gz | 1.2 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 8vsp_full_validation.pdf.gz | 1.2 MB | 表示 | |
| XML形式データ | 8vsp_validation.xml.gz | 51.5 KB | 表示 | |
| CIF形式データ | 8vsp_validation.cif.gz | 77.9 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/vs/8vsp ftp://data.pdbj.org/pub/pdb/validation_reports/vs/8vsp | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 43501MC ![]() 8vrwC 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 ( |
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| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
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リンク
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集合体
| 登録構造単位 | ![]()
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要素
| #1: タンパク質 | 分子量: 31599.943 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: HLA-DQA1 / 発現宿主: Mammalia (両生類) / 参照: UniProt: P01909#2: タンパク質 | 分子量: 33798.309 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: HLA-DQB1, HLA-DQB / 発現宿主: Mammalia (両生類) / 参照: UniProt: P01920#3: タンパク質 | 分子量: 34901.906 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: CD74, DHLAG / 発現宿主: Mammalia (両生類) / 参照: UniProt: P04233#4: 糖 | 研究の焦点であるリガンドがあるか | Y | Has protein modification | Y | |
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-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
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| 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 |
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試料調製
| 構成要素 | 名称: Trimeric complex of invariant chain associated with HLA-DQ alpha and beta タイプ: COMPLEX / Entity ID: #1-#3 / 由来: RECOMBINANT |
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| 分子量 | 値: 0.33 MDa / 実験値: YES |
| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: Mammalia (両生類) |
| 緩衝液 | pH: 8 |
| 試料 | 濃度: 5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 281 K |
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電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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| 顕微鏡 | モデル: FEI TITAN 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: 60 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
| CTF補正 | タイプ: NONE |
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| 3次元再構成 | 解像度: 3.12 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 421582 / 対称性のタイプ: POINT |
| 原子モデル構築 | プロトコル: AB INITIO MODEL |
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万見について




Homo sapiens (ヒト)
米国, 1件
引用


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FIELD EMISSION GUN