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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: 9fe1 | |||||||||||||||||||||||||||||||||
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| タイトル | Cryo-EM structure of the ternary DARPin NY_1/HLA-A0201/NY-ESO1 complex. | |||||||||||||||||||||||||||||||||
要素 |
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キーワード | IMMUNE SYSTEM / DARPin targeting MHC molecules in complex with tumor-associated peptide antigens | |||||||||||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報tRNA threonylcarbamoyladenosine metabolic process / antigen processing and presentation of peptide antigen via MHC class I / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / Endosomal/Vacuolar pathway / T cell mediated cytotoxicity / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / lumenal side of endoplasmic reticulum membrane / regulation of iron ion transport ...tRNA threonylcarbamoyladenosine metabolic process / antigen processing and presentation of peptide antigen via MHC class I / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / DAP12 interactions / Endosomal/Vacuolar pathway / T cell mediated cytotoxicity / Antigen Presentation: Folding, assembly and peptide loading of class I MHC / lumenal side of endoplasmic reticulum membrane / regulation of iron ion transport / cellular response to iron(III) ion / negative regulation of iron ion transport / 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 erythrocyte differentiation / response to molecule of bacterial origin / HFE-transferrin receptor complex / transferrin transport / MHC class I peptide loading complex / cellular response to iron ion / negative regulation of receptor-mediated endocytosis / positive regulation of T cell cytokine production / antigen processing and presentation of endogenous peptide antigen via MHC class I / MHC class I protein complex / peptide antigen assembly with MHC class II protein complex / negative regulation of neurogenesis / cellular response to nicotine / positive regulation of receptor-mediated endocytosis / MHC class II protein complex / multicellular organismal-level iron ion homeostasis / positive regulation of T cell mediated cytotoxicity / specific granule lumen / positive regulation of immune response / antigen processing and presentation of exogenous peptide antigen via MHC class II / peptide antigen binding / phagocytic vesicle membrane / recycling endosome membrane / positive regulation of T cell activation / negative regulation of epithelial cell proliferation / Interferon gamma signaling / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / Modulation by Mtb of host immune system / sensory perception of smell / positive regulation of cellular senescence / tertiary granule lumen / DAP12 signaling / MHC class II protein complex binding / T cell differentiation in thymus / late endosome membrane / negative regulation of neuron projection development / ER-Phagosome pathway / protein refolding / early endosome membrane / amyloid fibril formation / protein homotetramerization / intracellular iron ion homeostasis / learning or memory / endoplasmic reticulum lumen / Amyloid fiber formation / Golgi membrane / external side of plasma membrane / lysosomal membrane / focal adhesion / Neutrophil degranulation / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / : / extracellular exosome / extracellular region / membrane / identical protein binding / plasma membrane / cytoplasm / cytosol 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: 3.1 Å | |||||||||||||||||||||||||||||||||
データ登録者 | Schulte, T. / Wallden, K. / Carroni, M. / Sandalova, T. / Walser, M. / Mueller, S. / Venetz, N. / Achour, A. | |||||||||||||||||||||||||||||||||
| 資金援助 | スウェーデン, 3件
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引用 | ジャーナル: iScience / 年: 2025タイトル: Development of DARPin T cell engagers for specific targeting of tumor-associated HLA/peptide complexes. 著者: Natalia Venetz-Arenas / Tim Schulte / Sandra Müller / Karin Wallden / Stefanie Fischer / Tom Resink / Nadir Kadri / Maria Paladino / Nicole Pina / Filip Radom / Denis Villemagne / Sandra ...著者: Natalia Venetz-Arenas / Tim Schulte / Sandra Müller / Karin Wallden / Stefanie Fischer / Tom Resink / Nadir Kadri / Maria Paladino / Nicole Pina / Filip Radom / Denis Villemagne / Sandra Bruckmaier / Andreas Cornelius / Tanja Hospodarsch / Evren Alici / Hans-Gustaf Ljunggren / Benedict J Chambers / Xiao Han / Renhua Sun / Marta Carroni / Victor Levitsky / Tatyana Sandalova / Marcel Walser / Adnane Achour / ![]() 要旨: The balance between affinity and specificity in T cell receptor (TCR)-dependent targeting of HLA-restricted tumor-associated antigens presents a significant challenge for immunotherapy development. T ...The balance between affinity and specificity in T cell receptor (TCR)-dependent targeting of HLA-restricted tumor-associated antigens presents a significant challenge for immunotherapy development. T cell engagers that circumvent these limitations are therefore of particular interest. We established a process to generate bispecific designed ankyrin repeat proteins (DARPins) that simultaneously target HLA-I/peptide complexes and CD3e. These high-affinity T cell engagers elicited CD8 T cell activation against tumor targets with strong peptide specificity, as confirmed by X-scanning mutagenesis and functional killing assays. A cryo-EM structure of the ternary DARPin/HLA-A∗0201/NY-ESO1 complex revealed a rigid, concave DARPin surface spanning the full length of the peptide-binding cleft, contacting both α-helices and the peptide. The present findings reveal promising immuno-oncotherapeutic approaches and demonstrate the feasibility of rapidly developing DARPins with high affinity and specificity for HLA/peptide targets, which can be readily combined with a new generation of anti-CD3e-specific DARPins. | |||||||||||||||||||||||||||||||||
| 履歴 |
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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 | 9fe1.cif.gz | 187.6 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9fe1.ent.gz | 149.2 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9fe1.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/fe/9fe1 ftp://data.pdbj.org/pub/pdb/validation_reports/fe/9fe1 | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 50336MC ![]() 9epaC C: 同じ文献を引用 ( M: このデータのモデリングに利用したマップデータ |
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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: 33541.047 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: HLA-A / 発現宿主: ![]() |
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| #2: タンパク質 | 分子量: 11879.356 Da / 分子数: 1 / Fragment: UNP residues 21-119 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: B2M, CDABP0092, HDCMA22P / 発現宿主: ![]() |
| #3: タンパク質・ペプチド | 分子量: 1090.335 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) / 参照: UniProt: P78358 |
| #4: タンパク質 | 分子量: 18596.217 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 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 formed between the DARPin NY_1 and HLA-A0201/hb2m/NY-ESO1_157-165(9V) タイプ: COMPLEX 詳細: Size-exclusion chromatography (SEC) was used to purify refolded complexes of HLA-A0201 with human beta-2-microglobulin (hb2m) and the peptide NY-ESO1157-165(9V). Strep-Tactin Superflow high ...詳細: Size-exclusion chromatography (SEC) was used to purify refolded complexes of HLA-A0201 with human beta-2-microglobulin (hb2m) and the peptide NY-ESO1157-165(9V). Strep-Tactin Superflow high capacity columns (1 mL, IBA lifescience) run in 20 mM HEPES, 300 mM NaCl pH 7.5 were used for further purification. After a column wash, the protein was eluted using the same buffer supplemented with 2.5 mM desthiobiotin. TEV-cleaved DARPin NY_1 was reverse-purified via IMAC and the monomer was isolated from Superdex 200 equilibrated in 20 mM HEPES, 150 mM NaCl pH 7.5. For cross-linking, HLA-A0201/NY-ESO1157-165(9V) was mixed in a 1:2 molar ratio with NY_1, concentrated to an absorbance at 280 nm (Abs280) of 2.3, and incubated for 45 min in 25 mM HEPES, 150 mM NaCl, supplemented with 1.4 mM BS(PEG)5 (BS5) (ThermoScientific). The cross-linker was quenched by addition of 25 mM Tris. Samples for grid screening were isolated from Superdex 200 GL 10/300 SEC in 25 mM HEPES, 150 mM NaCl, pH 7.4, and concentrated to Abs280 values of 2. Entity ID: all / 由来: RECOMBINANT |
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| 分子量 | 値: 0.06 MDa / 実験値: NO |
| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7.4 / 詳細: 25 mM HEPES, 150 mM NaCl, pH 7.4 |
| 試料 | 濃度: 0.5 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: 277 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 / 倍率(公称値): 130000 X / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 600 nm / Cs: 2.7 mm / C2レンズ絞り径: 50 µm |
| 試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
| 撮影 | 平均露光時間: 2.3 sec. / 電子線照射量: 57.5 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 撮影したグリッド数: 1 / 実像数: 10855 |
| 電子光学装置 | エネルギーフィルター名称: GIF Bioquantum / エネルギーフィルタースリット幅: 20 eV |
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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 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 粒子像の選択 | 選択した粒子像数: 7726585 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.1 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 204743 / アルゴリズム: FOURIER SPACE / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | 空間: REAL 詳細: The crystal structures of NY_1 and HLA-A0201/NY-ESO1 (PDB 1S9W) were placed into the initial map in ChimeraX. The model was iteratively refined by model building in Coot and ChimeraX-Isolde, ...詳細: The crystal structures of NY_1 and HLA-A0201/NY-ESO1 (PDB 1S9W) were placed into the initial map in ChimeraX. The model was iteratively refined by model building in Coot and ChimeraX-Isolde, as well as Phenix real space refinement with integrated amber force field with Ramachandran, secondary structure and reference structure restraints | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 原子モデル構築 | 3D fitting-ID: 1 / タイプ: experimental model
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| 拘束条件 |
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万見について




Homo sapiens (ヒト)
スウェーデン, 3件
引用


PDBj


gel filtration


