+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-25427 | |||||||||
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タイトル | Structure of KRAS G12V/HLA-A*03:01 in complex with antibody fragment V2 | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | Complex / MHC-I / KRAS / HLA-A3 / IMMUNE SYSTEM | |||||||||
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 / 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 / Golgi medial cisterna / CD8 receptor binding / antigen processing and presentation of exogenous peptide antigen via MHC class I / endoplasmic reticulum exit site ...positive regulation of memory T cell activation / T cell mediated cytotoxicity directed against tumor cell target / TAP complex binding / 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 / Golgi medial cisterna / CD8 receptor binding / antigen processing and presentation of exogenous peptide antigen via MHC class I / endoplasmic reticulum exit site / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-dependent / TAP binding / protection from natural killer cell mediated cytotoxicity / beta-2-microglobulin binding / T cell receptor binding / detection of bacterium / positive regulation of ferrous iron binding / positive regulation of transferrin receptor binding / negative regulation of receptor binding / DAP12 interactions / antigen processing and presentation of endogenous peptide antigen via MHC class I via ER pathway, TAP-independent / positive regulation of receptor binding / antigen processing and presentation of endogenous peptide antigen via MHC class Ib / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / 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 / cellular response to iron(III) ion / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / negative regulation of forebrain neuron differentiation / regulation of erythrocyte differentiation / peptide antigen assembly with MHC class I protein complex / ER to Golgi transport vesicle membrane / regulation of iron ion transport / response to molecule of bacterial origin / MHC class I peptide loading complex / HFE-transferrin receptor complex / T cell mediated cytotoxicity / positive regulation of T cell cytokine production / antigen processing and presentation of endogenous peptide antigen via MHC class I / sensory perception of smell / MHC class I protein complex / negative regulation of neurogenesis / multicellular organismal-level iron ion homeostasis / positive regulation of receptor-mediated endocytosis / peptide antigen assembly with MHC class II protein complex / MHC class II protein complex / cellular response to nicotine / positive regulation of T cell mediated cytotoxicity / positive regulation of type II interferon production / specific granule lumen / phagocytic vesicle membrane / recycling endosome membrane / peptide antigen binding / positive regulation of cellular senescence / antigen processing and presentation of exogenous peptide antigen via MHC class II / negative regulation of epithelial cell proliferation / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / Interferon gamma signaling / positive regulation of immune response / positive regulation of T cell activation / Modulation by Mtb of host immune system / Interferon alpha/beta signaling / negative regulation of neuron projection development / positive regulation of protein binding / tertiary granule lumen / DAP12 signaling / E3 ubiquitin ligases ubiquitinate target proteins / MHC class II protein complex binding / antibacterial humoral response / late endosome membrane / T cell receptor signaling pathway / iron ion transport / ER-Phagosome pathway / early endosome membrane / T cell differentiation in thymus / protein refolding / protein homotetramerization / intracellular iron ion homeostasis / amyloid fibril formation / learning or memory / defense response to Gram-positive bacterium / immune response / Amyloid fiber formation / endoplasmic reticulum lumen / lysosomal membrane / external side of plasma membrane / Golgi membrane / innate immune response / signaling receptor binding / focal adhesion / Neutrophil degranulation / endoplasmic reticulum membrane / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / Golgi apparatus / cell surface / endoplasmic reticulum 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) / synthetic construct (人工物) | |||||||||
手法 | 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 KM / Gabelli SB | |||||||||
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. | |||||||||
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_25427.map.gz | 6.9 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-25427-v30.xml emd-25427.xml | 15.3 KB 15.3 KB | 表示 表示 | EMDBヘッダ |
画像 | emd_25427.png | 41.2 KB | ||
Filedesc metadata | emd-25427.cif.gz | 6.1 KB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-25427 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-25427 | HTTPS FTP |
-検証レポート
文書・要旨 | emd_25427_validation.pdf.gz | 326.4 KB | 表示 | EMDB検証レポート |
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文書・詳細版 | emd_25427_full_validation.pdf.gz | 326 KB | 表示 | |
XML形式データ | emd_25427_validation.xml.gz | 6.4 KB | 表示 | |
CIF形式データ | emd_25427_validation.cif.gz | 7.3 KB | 表示 | |
アーカイブディレクトリ | https://ftp.pdbj.org/pub/emdb/validation_reports/EMD-25427 ftp://ftp.pdbj.org/pub/emdb/validation_reports/EMD-25427 | HTTPS FTP |
-関連構造データ
関連構造データ | 7stfMC 8dvgC M: このマップから作成された原子モデル C: 同じ文献を引用 (文献) |
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類似構造データ | 類似検索 - 機能・相同性F&H 検索 |
-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_25427.map.gz / 形式: CCP4 / 大きさ: 125 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: 0.844 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
-試料の構成要素
-全体 : Ternary complex of antibody-fragment V2 with KRAS G12V/HLA-A*03:01
全体 | 名称: Ternary complex of antibody-fragment V2 with KRAS G12V/HLA-A*03:01 |
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要素 |
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-超分子 #1: Ternary complex of antibody-fragment V2 with KRAS G12V/HLA-A*03:01
超分子 | 名称: Ternary complex of antibody-fragment V2 with KRAS G12V/HLA-A*03:01 タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: all |
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-分子 #1: IgG, Fab Heavy Chain V2
分子 | 名称: IgG, Fab Heavy Chain V2 / 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: 23.175861 KDa |
組換発現 | 生物種: Mammalian expression vector BsrGI-MCS-pcDNA3.1 (その他) |
配列 | 文字列: EVQLVESGGG LVQPGGSLRL SCAASGFNLS YSDIHWVRQA PGKGLEWVAV VMPDSGHTNY ADSVKGRFTI SADTSKNTAY LQMNSLRAE DTAVYYCSRA TNIPVYAFDY WGQGTLVTVS SASTKGPSVF PLAPSSKSTS GGTAALGCLV KDYFPEPVTV S WNSGALTS ...文字列: EVQLVESGGG LVQPGGSLRL SCAASGFNLS YSDIHWVRQA PGKGLEWVAV VMPDSGHTNY ADSVKGRFTI SADTSKNTAY LQMNSLRAE DTAVYYCSRA TNIPVYAFDY WGQGTLVTVS SASTKGPSVF PLAPSSKSTS GGTAALGCLV KDYFPEPVTV S WNSGALTS GVHTFPAVLQ SSGLYSLSSV VTVPSSSLGT QTYICNVNHK PSNTKVDKKV EP |
-分子 #2: KRAS G12V (7-16)
分子 | 名称: KRAS G12V (7-16) / 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: synthetic construct (人工物) |
分子量 | 理論値: 885.082 Da |
配列 | 文字列: VVVGAVGVGK |
-分子 #3: IgG, Fab Light Chain V2
分子 | 名称: IgG, Fab Light Chain V2 / タイプ: protein_or_peptide / ID: 3 / 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: 23.859516 KDa |
組換発現 | 生物種: Mammalian expression vector BsrGI-MCS-pcDNA3.1 (その他) |
配列 | 文字列: DIQMTQSPSS LSASVGDRVT ITCRASQDVN TAVAWYQQKP GKAPKLLIYS ASFLYSGVPS RFSGSRSGTD FTLTISSLQP EDFATYYCQ QSYYYFRPIT FGQGTKVEIK RTVAAPSVFI FPPSDEQLKS GTASVVCLLN NFYPREAKVQ WKVDNALQSG N SQESVTEQ ...文字列: DIQMTQSPSS LSASVGDRVT ITCRASQDVN TAVAWYQQKP GKAPKLLIYS ASFLYSGVPS RFSGSRSGTD FTLTISSLQP EDFATYYCQ QSYYYFRPIT FGQGTKVEIK RTVAAPSVFI FPPSDEQLKS GTASVVCLLN NFYPREAKVQ WKVDNALQSG N SQESVTEQ DSKDSTYSLS STLTLSKADY EKHKVYACEV THQGLSSPVT KSFNRGEC |
-分子 #4: HLA class I histocompatibility antigen, A alpha chain
分子 | 名称: HLA class I histocompatibility antigen, A alpha chain 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: Homo sapiens (ヒト) |
分子量 | 理論値: 32.27051 KDa |
組換発現 | 生物種: Escherichia coli BL21(DE3) (大腸菌) |
配列 | 文字列: GSHSMRYFFT SVSRPGRGEP RFIAVGYVDD TQFVRFDSDA ASQRMEPRAP WIEQEGPEYW DQETRNVKAQ SQTDRVDLGT LRGYYNQSE AGSHTIQIMY GCDVGSDGRF LRGYRQDAYD GKDYIALNED LRSWTAADMA AQITKRKWEA AHEAEQLRAY L DGTCVEWL ...文字列: GSHSMRYFFT SVSRPGRGEP RFIAVGYVDD TQFVRFDSDA ASQRMEPRAP WIEQEGPEYW DQETRNVKAQ SQTDRVDLGT LRGYYNQSE AGSHTIQIMY GCDVGSDGRF LRGYRQDAYD GKDYIALNED LRSWTAADMA AQITKRKWEA AHEAEQLRAY L DGTCVEWL RRYLENGKET LQRTDPPKTH MTHHPISDHE ATLRCWALGF YPAEITLTWQ RDGEDQTQDT ELVETRPAGD GT FQKWAAV VVPSGEEQRY TCHVQHEGLP KPLTLRWELS SQP UniProtKB: HLA class I histocompatibility antigen, A alpha chain |
-分子 #5: Beta-2-microglobulin
分子 | 名称: Beta-2-microglobulin / 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: 11.948353 KDa |
組換発現 | 生物種: Escherichia coli BL21(DE3) (大腸菌) |
配列 | 文字列: EAIQRTPKIQ VYSRHPAENG KSNFLNCYVS GFHPSDIEVD LLKNGERIEK VEHSDLSFSK DWSFYLLYYT EFTPTEKDEY ACRVNHVTL SQPKIVKWDR DM UniProtKB: Beta-2-microglobulin |
-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 mg/mL |
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緩衝液 | pH: 7 |
凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 60.0 e/Å2 |
電子線 | 加速電圧: 300 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 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |
-画像解析
初期モデル | モデルのタイプ: NONE |
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最終 再構成 | 解像度のタイプ: BY AUTHOR / 解像度: 3.14 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION (ver. 3.1beta) / 使用した粒子像数: 367584 |
初期 角度割当 | タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.1beta) |
最終 角度割当 | タイプ: MAXIMUM LIKELIHOOD / ソフトウェア - 名称: RELION (ver. 3.1beta) |
-原子モデル構築 1
精密化 | 空間: REAL / プロトコル: RIGID BODY FIT / 当てはまり具合の基準: Correlation coefficient |
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得られたモデル | PDB-7stf: |