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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: 7stf | ||||||
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| タイトル | Structure of KRAS G12V/HLA-A*03:01 in complex with antibody fragment V2 | ||||||
要素 |
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キーワード | IMMUNE SYSTEM / Complex / MHC-I / KRAS / HLA-A3 | ||||||
| 機能・相同性 | 機能・相同性情報positive regulation of memory T cell activation / T cell mediated cytotoxicity directed against tumor cell target / TAP complex binding / Golgi medial cisterna / positive regulation of CD8-positive, alpha-beta T cell activation / CD8-positive, alpha-beta T cell activation / positive regulation of CD8-positive, alpha-beta T cell proliferation / CD8 receptor binding / antigen processing and presentation of exogenous peptide antigen via MHC class I / beta-2-microglobulin binding ...positive regulation of memory T cell activation / T cell mediated cytotoxicity directed against tumor cell target / TAP complex binding / Golgi medial cisterna / positive regulation of CD8-positive, alpha-beta T cell activation / CD8-positive, alpha-beta T cell activation / positive regulation of CD8-positive, alpha-beta T cell proliferation / CD8 receptor binding / antigen processing and presentation of exogenous peptide antigen via MHC class I / beta-2-microglobulin binding / endoplasmic reticulum exit site / TAP binding / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent / protection from natural killer cell mediated cytotoxicity / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-independent / antigen processing and presentation of endogenous peptide antigen via MHC class Ib / detection of bacterium / T cell receptor binding / negative regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / transferrin transport / cellular response to iron ion / Endosomal/Vacuolar pathway / lumenal side of endoplasmic reticulum membrane / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / peptide antigen assembly with MHC class II protein complex / cellular response to iron(III) ion / MHC class II protein complex / negative regulation of forebrain neuron differentiation / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / ER to Golgi transport vesicle membrane / peptide antigen assembly with MHC class I protein complex / regulation of iron ion transport / regulation of erythrocyte differentiation / HFE-transferrin receptor complex / response to molecule of bacterial origin / MHC class I peptide loading complex / T cell mediated cytotoxicity / positive regulation of T cell cytokine production / antigen processing and presentation of endogenous peptide antigen via MHC class I / antigen processing and presentation of exogenous peptide antigen via MHC class II / positive regulation of immune response / MHC class I protein complex / positive regulation of T cell activation / peptide antigen binding / positive regulation of receptor-mediated endocytosis / negative regulation of neurogenesis / cellular response to nicotine / positive regulation of T cell mediated cytotoxicity / multicellular organismal-level iron ion homeostasis / specific granule lumen / positive regulation of type II interferon production / phagocytic vesicle membrane / recycling endosome membrane / Interferon gamma signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / negative regulation of epithelial cell proliferation / MHC class II protein complex binding / Interferon alpha/beta signaling / Modulation by Mtb of host immune system / late endosome membrane / sensory perception of smell / positive regulation of cellular senescence / antibacterial humoral response / tertiary granule lumen / DAP12 signaling / T cell differentiation in thymus / T cell receptor signaling pathway / E3 ubiquitin ligases ubiquitinate target proteins / negative regulation of neuron projection development / ER-Phagosome pathway / protein refolding / early endosome membrane / protein homotetramerization / amyloid fibril formation / intracellular iron ion homeostasis / learning or memory / defense response to Gram-positive bacterium / immune response / endoplasmic reticulum lumen / Amyloid fiber formation / signaling receptor binding / Golgi membrane / lysosomal membrane / innate immune response / external side of plasma membrane / focal adhesion / Neutrophil degranulation / endoplasmic reticulum membrane / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / cell surface / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / extracellular space / RNA binding / extracellular exosome 類似検索 - 分子機能 | ||||||
| 生物種 | Homo sapiens (ヒト)synthetic construct (人工物) | ||||||
| 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: 3.14 Å | ||||||
データ登録者 | Wright, K.M. / Gabelli, S.B. / Miller, M. | ||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Nat Commun / 年: 2023タイトル: Hydrophobic interactions dominate the recognition of a KRAS G12V neoantigen. 著者: Katharine M Wright / Sarah R DiNapoli / Michelle S Miller / P Aitana Azurmendi / Xiaowei Zhao / Zhiheng Yu / Mayukh Chakrabarti / WuXian Shi / Jacqueline Douglass / Michael S Hwang / Emily ...著者: Katharine M Wright / Sarah R DiNapoli / Michelle S Miller / P Aitana Azurmendi / Xiaowei Zhao / Zhiheng Yu / Mayukh Chakrabarti / WuXian Shi / Jacqueline Douglass / Michael S Hwang / Emily Han-Chung Hsiue / Brian J Mog / Alexander H Pearlman / Suman Paul / Maximilian F Konig / Drew M Pardoll / Chetan Bettegowda / Nickolas Papadopoulos / Kenneth W Kinzler / Bert Vogelstein / Shibin Zhou / Sandra B Gabelli / ![]() 要旨: Specificity remains a major challenge to current therapeutic strategies for cancer. Mutation associated neoantigens (MANAs) are products of genetic alterations, making them highly specific ...Specificity remains a major challenge to current therapeutic strategies for cancer. Mutation associated neoantigens (MANAs) are products of genetic alterations, making them highly specific therapeutic targets. MANAs are HLA-presented (pHLA) peptides derived from intracellular mutant proteins that are otherwise inaccessible to antibody-based therapeutics. Here, we describe the cryo-EM structure of an antibody-MANA pHLA complex. Specifically, we determine a TCR mimic (TCRm) antibody bound to its MANA target, the KRAS peptide presented by HLA-A*03:01. Hydrophobic residues appear to account for the specificity of the mutant G12V residue. We also determine the structure of the wild-type G12 peptide bound to HLA-A*03:01, using X-ray crystallography. Based on these structures, we perform screens to validate the key residues required for peptide specificity. These experiments led us to a model for discrimination between the mutant and the wild-type peptides presented on HLA-A*03:01 based exclusively on hydrophobic interactions. | ||||||
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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 | 7stf.cif.gz | 154 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb7stf.ent.gz | 120.4 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7stf.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 | 7stf_validation.pdf.gz | 663.2 KB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 7stf_full_validation.pdf.gz | 699.6 KB | 表示 | |
| XML形式データ | 7stf_validation.xml.gz | 32.9 KB | 表示 | |
| CIF形式データ | 7stf_validation.cif.gz | 49 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/st/7stf ftp://data.pdbj.org/pub/pdb/validation_reports/st/7stf | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 25427MC ![]() 8dvgC 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: 抗体 | 分子量: 23175.861 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / プラスミド: pcDNA3.1 / 細胞株 (発現宿主): HEK293F発現宿主: Mammalian expression vector BsrGI-MCS-pcDNA3.1 (その他) |
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| #2: タンパク質・ペプチド | 分子量: 885.082 Da / 分子数: 1 / Mutation: G12V / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) |
| #3: 抗体 | 分子量: 23859.516 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / プラスミド: pcDNA3.1 / 細胞株 (発現宿主): HEK293F発現宿主: Mammalian expression vector BsrGI-MCS-pcDNA3.1 (その他) |
| #4: タンパク質 | 分子量: 32270.510 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: P04439 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: HLA-A, HLAA / プラスミド: pET3a / 発現宿主: ![]() |
| #5: タンパク質 | 分子量: 11948.353 Da / 分子数: 1 / 由来タイプ: 組換発現 / 詳細: P61769 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: B2M, CDABP0092, HDCMA22P / プラスミド: pET3a / 発現宿主: ![]() |
| Has protein modification | Y |
-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: Ternary complex of antibody-fragment V2 with KRAS G12V/HLA-A*03:01 タイプ: COMPLEX / Entity ID: all / 由来: MULTIPLE SOURCES |
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| 分子量 | 単位: KILODALTONS/NANOMETER / 実験値: NO |
| 緩衝液 | pH: 7 |
| 試料 | 濃度: 1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
| 急速凍結 | 凍結剤: ETHANE |
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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 |
| 撮影 | 電子線照射量: 60 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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解析
| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.14 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 367584 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL / Target criteria: Correlation coefficient |
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万見について




Homo sapiens (ヒト)
米国, 1件
引用


PDBj




gel filtration

