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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: 8fja | ||||||
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タイトル | CryoEM structure of HLA-A2 MAGEA4 (230-239) in complex with REGN6972 Fab | ||||||
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![]() | IMMUNE SYSTEM / HLA / MHC / antibody | ||||||
機能・相同性 | ![]() antigen processing and presentation of peptide antigen via MHC class I / positive regulation of cell cycle / : / : / positive regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / negative regulation of receptor binding / DAP12 interactions / cellular response to iron ion ...antigen processing and presentation of peptide antigen via MHC class I / positive regulation of cell cycle / : / : / positive regulation of receptor binding / early endosome lumen / Nef mediated downregulation of MHC class I complex cell surface expression / negative regulation of receptor binding / DAP12 interactions / cellular response to iron ion / lumenal side of endoplasmic reticulum membrane / Endosomal/Vacuolar pathway / 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 / antigen processing and presentation of exogenous protein antigen via MHC class Ib, TAP-dependent / MHC class II protein complex / negative regulation of forebrain neuron differentiation / ER to Golgi transport vesicle membrane / peptide antigen assembly with MHC class I protein complex / regulation of erythrocyte differentiation / regulation of iron ion transport / MHC class I peptide loading complex / response to molecule of bacterial origin / HFE-transferrin receptor complex / T cell mediated cytotoxicity / antigen processing and presentation of endogenous peptide antigen via MHC class I / positive regulation of T cell cytokine production / antigen processing and presentation of exogenous peptide antigen via MHC class II / MHC class I protein complex / positive regulation of immune response / peptide antigen binding / negative regulation of neurogenesis / positive regulation of T cell mediated cytotoxicity / positive regulation of receptor-mediated endocytosis / multicellular organismal-level iron ion homeostasis / positive regulation of T cell activation / cellular response to nicotine / histone deacetylase binding / specific granule lumen / phagocytic vesicle membrane / recycling endosome membrane / positive regulation of cellular senescence / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / negative regulation of epithelial cell proliferation / Interferon gamma signaling / MHC class II protein complex binding / positive regulation of protein binding / Modulation by Mtb of host immune system / late endosome membrane / sensory perception of smell / tertiary granule lumen / DAP12 signaling / iron ion transport / negative regulation of neuron projection development / T cell differentiation in thymus / ER-Phagosome pathway / protein refolding / early endosome membrane / protein homotetramerization / amyloid fibril formation / intracellular iron ion homeostasis / learning or memory / immune response / Amyloid fiber formation / endoplasmic reticulum lumen / external side of plasma membrane / Golgi membrane / lysosomal membrane / focal adhesion / Neutrophil degranulation / negative regulation of apoptotic process / SARS-CoV-2 activates/modulates innate and adaptive immune responses / structural molecule activity / negative regulation of transcription by RNA polymerase II / cell surface / endoplasmic reticulum / Golgi apparatus / protein homodimerization activity / extracellular space / extracellular exosome / extracellular region / metal ion binding / identical protein binding / nucleus / membrane / plasma membrane / cytosol 類似検索 - 分子機能 | ||||||
生物種 | ![]() | ||||||
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 Å | ||||||
![]() | Saotome, K. / Franklin, M.C. | ||||||
資金援助 | 1件
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![]() | ![]() タイトル: CAR T cells based on fully human T cell receptor-mimetic antibodies exhibit potent antitumor activity in vivo. 著者: Robert Salzler / David J DiLillo / Kei Saotome / Kevin Bray / Katja Mohrs / Haun Hwang / Kamil J Cygan / Darshit Shah / Anna Rye-Weller / Kunal Kundu / Ashok Badithe / Xiaoqin Zhang / Elena ...著者: Robert Salzler / David J DiLillo / Kei Saotome / Kevin Bray / Katja Mohrs / Haun Hwang / Kamil J Cygan / Darshit Shah / Anna Rye-Weller / Kunal Kundu / Ashok Badithe / Xiaoqin Zhang / Elena Garnova / Marcela Torres / Ankur Dhanik / Robert Babb / Frank J Delfino / Courtney Thwaites / Drew Dudgeon / Michael J Moore / Thomas Craig Meagher / Corinne E Decker / Tomasz Owczarek / John A Gleason / Xiaoran Yang / David Suh / Wen-Yi Lee / Richard Welsh / Douglas MacDonald / Johanna Hansen / Chunguang Guo / Jessica R Kirshner / Gavin Thurston / Tammy Huang / Matthew C Franklin / George D Yancopoulos / John C Lin / Lynn E Macdonald / Andrew J Murphy / Gang Chen / Olav Olsen / William C Olson / ![]() 要旨: Monoclonal antibody therapies have transformed the lives of patients across a diverse range of diseases. However, antibodies can usually only access extracellular proteins, including the ...Monoclonal antibody therapies have transformed the lives of patients across a diverse range of diseases. However, antibodies can usually only access extracellular proteins, including the extracellular portions of membrane proteins that are expressed on the cell surface. In contrast, T cell receptors (TCRs) survey the entire cellular proteome when processed and presented as peptides in association with human leukocyte antigen (pHLA complexes). Antibodies that mimic TCRs by recognizing pHLA complexes have the potential to extend the reach of antibodies to this larger pool of targets and provide increased binding affinity and specificity. A major challenge in developing TCR mimetic (TCRm) antibodies is the limited sequence differences between the target pHLA complex relative to the large global repertoire of pHLA complexes. Here, we provide a comprehensive strategy for generating fully human TCRm antibodies across multiple HLA alleles, beginning with pHLA target discovery and validation and culminating in the engineering of TCRm-based chimeric antigen receptor T cells with potent antitumor activity. By incorporating mass spectrometry, bioinformatic predictions, HLA-humanized mice, antibody screening, and cryo-electron microscopy, we have established a pipeline to identify additional pHLA complex-specific antibodies with therapeutic potential. | ||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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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 | ![]() | 159.1 KB | 表示 | ![]() |
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PDB形式 | ![]() | 119.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 1 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1 MB | 表示 | |
XML形式データ | ![]() | 35.7 KB | 表示 | |
CIF形式データ | ![]() | 52.3 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 29220MC ![]() 8fjbC 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 ![]() |
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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: 23420.947 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() |
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#2: 抗体 | 分子量: 25272.316 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() |
#3: タンパク質 | 分子量: 32082.512 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
#4: タンパク質 | 分子量: 11879.356 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
#5: タンパク質・ペプチド | 分子量: 1134.200 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() |
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 |
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分子量 | 実験値: NO | ||||||||||||||||||||||||||||||
由来(天然) |
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由来(組換発現) |
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緩衝液 | pH: 7.5 | ||||||||||||||||||||||||||||||
試料 | 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: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2400 nm / 最小 デフォーカス(公称値): 1400 nm |
撮影 | 電子線照射量: 40 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
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
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 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 117411 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 102.41 Å2 | ||||||||||||||||||||||||
拘束条件 |
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