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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: 9gh6 | ||||||||||||||||||||||||||||||
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タイトル | CEACAM1 (35-234), focused refinement in the complex with CbpF | ||||||||||||||||||||||||||||||
![]() | Carcinoembryonic antigen-related cell adhesion molecule 1 | ||||||||||||||||||||||||||||||
![]() | CELL ADHESION / bacterial pathogenesis / adhesin / immunomodulation / host-pathogen interaction | ||||||||||||||||||||||||||||||
機能・相同性 | ![]() regulation of endothelial cell differentiation / insulin receptor internalization / negative regulation of cytotoxic T cell degranulation / Regulation of MITF-M dependent genes involved in invasion / granulocyte colony-stimulating factor signaling pathway / regulation of homophilic cell adhesion / negative regulation of hepatocyte proliferation / regulation of sprouting angiogenesis / regulation of epidermal growth factor receptor signaling pathway / filamin binding ...regulation of endothelial cell differentiation / insulin receptor internalization / negative regulation of cytotoxic T cell degranulation / Regulation of MITF-M dependent genes involved in invasion / granulocyte colony-stimulating factor signaling pathway / regulation of homophilic cell adhesion / negative regulation of hepatocyte proliferation / regulation of sprouting angiogenesis / regulation of epidermal growth factor receptor signaling pathway / filamin binding / regulation of blood vessel remodeling / negative regulation of natural killer cell mediated cytotoxicity directed against tumor cell target / negative regulation of lipid biosynthetic process / negative regulation of T cell mediated cytotoxicity / regulation of endothelial cell migration / negative regulation of granulocyte differentiation / regulation of phosphatidylinositol 3-kinase/protein kinase B signal transduction / insulin catabolic process / Fibronectin matrix formation / common myeloid progenitor cell proliferation / cell-cell adhesion via plasma-membrane adhesion molecules / negative regulation of interleukin-1 production / negative regulation of fatty acid biosynthetic process / positive regulation of vasculogenesis / negative regulation of platelet aggregation / bile acid transmembrane transporter activity / negative regulation of vascular permeability / regulation of immune system process / wound healing, spreading of cells / negative regulation of T cell receptor signaling pathway / microvillus membrane / bile acid and bile salt transport / transport vesicle membrane / blood vessel development / homophilic cell adhesion via plasma membrane adhesion molecules / tertiary granule membrane / lateral plasma membrane / regulation of ERK1 and ERK2 cascade / specific granule membrane / regulation of cell migration / protein tyrosine kinase binding / basal plasma membrane / negative regulation of protein kinase activity / integrin-mediated signaling pathway / Cell surface interactions at the vascular wall / adherens junction / regulation of cell growth / kinase binding / cellular response to insulin stimulus / cell junction / cell-cell junction / cell migration / actin binding / protein phosphatase binding / angiogenesis / calmodulin binding / protein dimerization activity / cell adhesion / apical plasma membrane / Neutrophil degranulation / cell surface / signal transduction / protein homodimerization activity / extracellular exosome / identical protein binding / membrane / plasma membrane 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 | ||||||||||||||||||||||||||||||
![]() | Marongiu, G.L. / Fink, U. / Roderer, D. | ||||||||||||||||||||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis for immune cell binding of via the trimeric autotransporter adhesin CbpF. 著者: Gian Luca Marongiu / Uwe Fink / Felix Schöpf / Andreas Oder / Jens Peter von Kries / Daniel Roderer / ![]() 要旨: (Fn), a commensal in the human oral cavity, is overrepresented in the colon microbiota of colorectal cancer (CRC) patients and is linked to tumor chemoresistance, metastasis, and a poor therapeutic ... (Fn), a commensal in the human oral cavity, is overrepresented in the colon microbiota of colorectal cancer (CRC) patients and is linked to tumor chemoresistance, metastasis, and a poor therapeutic prognosis. Fn produces numerous adhesins that mediate tumor colonization and downregulation of the host's antitumor immune response. One of these, the trimeric autotransporter adhesin (TAA) CEACAM binding protein of (CbpF), targets CEACAM1 on T-cells and has been associated with immune evasion of Fn-colonized tumors. Whereas the role of CEACAM1 in homophilic and heterophilic cell interactions and immune evasion is well described, the mechanistic details of its interaction with fusobacterial CbpF remain unknown due to the lack of a high-resolution structure of the adhesin-receptor complex. Here, we present two structures of CbpF alone and in complex with CEACAM1, obtained by cryogenic electron microscopy and single particle analysis. They reveal that CbpF forms a stable homotrimeric complex whose N-terminal part of the extracellular domain comprises a 64 Å long β roll domain with a unique lateral loop extension. CEACAM1 binds to this loop with high affinity via its N-terminal IgV-like domain with a nanomolar dissociation constant as determined by surface plasmon resonance. This study provides a comprehensive structural description of a fusobacterial TAA, illustrates a yet undescribed CEACAM1 binding mode, and paves the way for rational drug design targeting Fn in CRC. | ||||||||||||||||||||||||||||||
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 | ![]() | 95.3 KB | 表示 | ![]() |
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PDB形式 | ![]() | 70.5 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 51348MC ![]() 9gh4C ![]() 9gh5C 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 ![]() |
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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: 47922.082 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: human CEACAM1 extracellular domain (Acro Biosystems), res. 35-234 are resolved 由来: (組換発現) ![]() ![]() | ||||
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#2: 糖 | ChemComp-NAG / 研究の焦点であるリガンドがあるか | N | 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: 1 CEACAM1 extracellular domain (35-234) in the context of the heterohexameric complex with CbpF タイプ: COMPLEX / Entity ID: #1 / 由来: RECOMBINANT |
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分子量 | 値: 0.35 MDa / 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() |
緩衝液 | pH: 7 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
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 / 倍率(公称値): 105000 X / 最大 デフォーカス(公称値): 2400 nm / 最小 デフォーカス(公称値): 1200 nm / アライメント法: ZEMLIN TABLEAU |
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 | 電子線照射量: 52.8 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: 6334 |
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: 1766853 | ||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||
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: 330202 詳細: Map derived from shift of reconstruction center of full complex and masked refinement クラス平均像の数: 1 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | プロトコル: FLEXIBLE FIT / 空間: REAL | ||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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