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基本情報
登録情報 | データベース: PDB / ID: 7z0l | |||||||||
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タイトル | IL-27 signalling complex | |||||||||
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![]() | CYTOKINE / immunosuppression / EBI3 / IL-27R-alpha / gp130 / p28. | |||||||||
機能・相同性 | ![]() negative regulation of T cell extravasation / interleukin-27 receptor binding / regulation of T-helper 1 cell differentiation / negative regulation of cellular extravasation / negative regulation of T-helper 17 type immune response / oncostatin-M receptor activity / IL-6-type cytokine receptor ligand interactions / MAPK3 (ERK1) activation / MAPK1 (ERK2) activation / Interleukin-27 signaling ...negative regulation of T cell extravasation / interleukin-27 receptor binding / regulation of T-helper 1 cell differentiation / negative regulation of cellular extravasation / negative regulation of T-helper 17 type immune response / oncostatin-M receptor activity / IL-6-type cytokine receptor ligand interactions / MAPK3 (ERK1) activation / MAPK1 (ERK2) activation / Interleukin-27 signaling / leukemia inhibitory factor receptor activity / interleukin-6 receptor activity / interleukin-6 binding / Interleukin-6 signaling / interleukin-27 receptor activity / Interleukin-35 Signalling / regulation of isotype switching to IgG isotypes / negative regulation of type 2 immune response / oncostatin-M receptor complex / ciliary neurotrophic factor receptor binding / ciliary neurotrophic factor receptor complex / interleukin-6 receptor complex / response to Gram-positive bacterium / interleukin-27-mediated signaling pathway / interleukin-6 receptor binding / interleukin-11-mediated signaling pathway / positive regulation of T-helper 1 type immune response / regulation of Notch signaling pathway / positive regulation of astrocyte differentiation / intestinal epithelial cell development / negative regulation of interleukin-17 production / cell surface receptor signaling pathway via STAT / cytokine receptor activity / glycogen metabolic process / interleukin-6-mediated signaling pathway / positive regulation of Notch signaling pathway / negative regulation of interleukin-6 production / regulation of T cell proliferation / protein tyrosine kinase activator activity / negative regulation of tumor necrosis factor production / positive regulation of osteoblast differentiation / positive regulation of T cell proliferation / T cell proliferation / coreceptor activity / positive regulation of defense response to virus by host / cytokine activity / cytokine-mediated signaling pathway / positive regulation of type II interferon production / cell body / scaffold protein binding / negative regulation of neuron apoptotic process / defense response to Gram-positive bacterium / inflammatory response / membrane raft / external side of plasma membrane / signaling receptor binding / innate immune response / neuronal cell body / positive regulation of cell population proliferation / dendrite / cell surface / signal transduction / extracellular space / extracellular region / identical protein binding / membrane / plasma membrane / cytosol / cytoplasm 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: 4 Å | |||||||||
![]() | Jin, Y. / Gardner, S. / Bubeck, D. | |||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural insights into the assembly and activation of the IL-27 signaling complex. 著者: Yibo Jin / Paul K Fyfe / Scott Gardner / Stephan Wilmes / Doryen Bubeck / Ignacio Moraga / ![]() 要旨: Interleukin 27 (IL-27) is a heterodimeric cytokine that elicits potent immunosuppressive responses. Comprised of EBI3 and p28 subunits, IL-27 binds GP130 and IL-27Rα receptor chains to activate the ...Interleukin 27 (IL-27) is a heterodimeric cytokine that elicits potent immunosuppressive responses. Comprised of EBI3 and p28 subunits, IL-27 binds GP130 and IL-27Rα receptor chains to activate the JAK/STAT signaling cascade. However, how these receptors recognize IL-27 and form a complex capable of phosphorylating JAK proteins remains unclear. Here, we used cryo electron microscopy (cryoEM) and AlphaFold modeling to solve the structure of the IL-27 receptor recognition complex. Our data show how IL-27 serves as a bridge connecting IL-27Rα (domains 1-2) with GP130 (domains 1-3) to initiate signaling. While both receptors contact the p28 component of the heterodimeric cytokine, EBI3 stabilizes the complex by binding a positively charged surface of IL-27Rα and Domain 1 of GP130. We find that assembly of the IL-27 receptor recognition complex is distinct from both IL-12 and IL-6 cytokine families and provides a mechanistic blueprint for tuning IL-27 pleiotropic actions. | |||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 364.4 KB | 表示 | ![]() |
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PDB形式 | ![]() | 246.4 KB | 表示 | ![]() |
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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 | ![]() 14427MC 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: タンパク質 | 分子量: 32914.020 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q00560 | ||||||
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#2: タンパク質 | 分子量: 52475.281 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() 参照: UniProt: O35228, UniProt: Q8K3I6 | ||||||
#3: タンパク質 | 分子量: 25968.398 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() 発現宿主: ![]() ![]() 参照: UniProt: O70394 | ||||||
#4: 多糖 | 2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose #5: 糖 | 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: IL-27 Signalling complex / タイプ: COMPLEX / Entity ID: #1-#3 / 由来: RECOMBINANT | |||||||||||||||
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分子量 | 値: 0.1 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: 7.2 / 詳細: Solutions were made fresh and 0.2um filtered | |||||||||||||||
緩衝液成分 |
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試料 | 濃度: 0.1 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES / 詳細: 0.8mg/ml | |||||||||||||||
試料支持 | グリッドの材料: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: EMS Lacey Carbon | |||||||||||||||
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: 293 K / 詳細: Blot time 2s, blot force -2 |
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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): 81000 X / 最大 デフォーカス(公称値): 3500 nm / 最小 デフォーカス(公称値): 500 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 µm / アライメント法: COMA FREE |
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: 3.5 sec. / 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 撮影したグリッド数: 2 / 実像数: 56523 |
画像スキャン | 横: 4092 / 縦: 5760 |
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解析
ソフトウェア |
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EMソフトウェア |
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CTF補正 | 詳細: CTF correction was performed following 3D reconstruction. Local CTF refinement was carried out during refinement タイプ: NONE | ||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 1811398 | ||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 208431 / アルゴリズム: BACK PROJECTION 詳細: Final reconstruction was performed using local refinement in cryoSPARC. 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 詳細: Initial fitting was performed using Chimera and ChimeraX. Then ISOLDE and Phenix real space refine were used to refine the model. | ||||||||||||||||||||||||||||||||||||||||||||
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: 195.98 Å2 | ||||||||||||||||||||||||||||||||||||||||||||
拘束条件 |
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