登録情報 データベース : EMDB / ID : EMD-60090 ダウンロードとリンクタイトル Structure of the ige-fc bound to its high affinity receptor fc(epsilon)ri state3 マップデータ 詳細 試料複合体 : ige-fc bound to its high affinity receptor fc(epsilon)ri複合体 : High affinity immunoglobulin epsilon receptorタンパク質・ペプチド : High affinity immunoglobulin epsilon receptor subunit alphaタンパク質・ペプチド : High affinity immunoglobulin epsilon receptor subunit betaタンパク質・ペプチド : High affinity immunoglobulin epsilon receptor subunit gamma複合体 : IgEタンパク質・ペプチド : Immunoglobulin heavy constant epsilonリガンド : 2-acetamido-2-deoxy-beta-D-glucopyranoseリガンド : CHOLESTEROL HEMISUCCINATE 詳細 キーワード Complex / MEMBRANE PROTEIN機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
Fc epsilon receptor (FCERI) signaling / FCERI mediated NF-kB activation / Dectin-2 family / Role of LAT2/NTAL/LAB on calcium mobilization / Platelet Adhesion to exposed collagen / serotonin secretion / GPVI-mediated activation cascade / Cell surface interactions at the vascular wall / IgE receptor activity / Fc-epsilon receptor I complex ... Fc epsilon receptor (FCERI) signaling / FCERI mediated NF-kB activation / Dectin-2 family / Role of LAT2/NTAL/LAB on calcium mobilization / Platelet Adhesion to exposed collagen / serotonin secretion / GPVI-mediated activation cascade / Cell surface interactions at the vascular wall / IgE receptor activity / Fc-epsilon receptor I complex / FCERI mediated Ca+2 mobilization / Fc receptor mediated stimulatory signaling pathway / T cell differentiation involved in immune response / high-affinity IgE receptor activity / negative regulation of mast cell apoptotic process / IgE B cell receptor complex / type I hypersensitivity / mast cell activation / mast cell apoptotic process / Fc-gamma receptor III complex / FCERI mediated MAPK activation / positive regulation of interleukin-3 production / eosinophil degranulation / serotonin secretion by platelet / positive regulation of mast cell cytokine production / neutrophil activation involved in immune response / positive regulation of mast cell degranulation / Fc-gamma receptor signaling pathway / positive regulation of type III hypersensitivity / regulation of platelet activation / positive regulation of type IIa hypersensitivity / IgE binding / leukotriene biosynthetic process / regulation of release of sequestered calcium ion into cytosol / positive regulation of protein localization to cell surface / positive regulation of type I hypersensitivity / interleukin-3-mediated signaling pathway / positive regulation of granulocyte macrophage colony-stimulating factor production / type 2 immune response / IgG binding / immunoglobulin receptor binding / Neutrophil degranulation / phagocytosis, engulfment / mast cell degranulation / positive regulation of interleukin-4 production / antigen processing and presentation of exogenous peptide antigen via MHC class I / Fc-epsilon receptor signaling pathway / immunoglobulin mediated immune response / positive regulation of interleukin-10 production / cellular response to low-density lipoprotein particle stimulus / regulation of immune response / neutrophil chemotaxis / SH2 domain binding / positive regulation of calcium-mediated signaling / positive regulation of phagocytosis / osteoclast differentiation / B cell differentiation / integrin-mediated signaling pathway / protein localization to plasma membrane / B cell receptor signaling pathway / phosphoprotein binding / peptide antigen assembly with MHC class II protein complex / establishment of localization in cell / MHC class II protein complex / calcium-mediated signaling / antigen processing and presentation of exogenous peptide antigen via MHC class II / positive regulation of immune response / positive regulation of T cell activation / peptide antigen binding / receptor internalization / positive regulation of interleukin-6 production / positive regulation of tumor necrosis factor production / MHC class II protein complex binding / late endosome membrane / cell surface receptor signaling pathway / endosome / defense response to bacterium / immune response / protein heterodimerization activity / lysosomal membrane / innate immune response / external side of plasma membrane / protein kinase binding / cell surface / signal transduction / protein homodimerization activity / extracellular region / identical protein binding / plasma membrane / cytoplasm 類似検索 - 分子機能 High affinity immunoglobulin epsilon receptor subunit gamma / Membrane-spanning 4-domains subfamily A / CD20-like family / CD20-like family / T-cell surface glycoprotein CD3 zeta subunit/High affinity IgE receptor gamma subunit / T-cell surface glycoprotein CD3 zeta chain / : / Immunoreceptor tyrosine-based activation motif / Phosphorylated immunoreceptor signalling ITAM / ITAM motif mammalian type profile. ... High affinity immunoglobulin epsilon receptor subunit gamma / Membrane-spanning 4-domains subfamily A / CD20-like family / CD20-like family / T-cell surface glycoprotein CD3 zeta subunit/High affinity IgE receptor gamma subunit / T-cell surface glycoprotein CD3 zeta chain / : / Immunoreceptor tyrosine-based activation motif / Phosphorylated immunoreceptor signalling ITAM / ITAM motif mammalian type profile. / Immunoreceptor tyrosine-based activation motif / Immunoglobulin domain / Immunoglobulin / Immunoglobulin domain / : / Immunoglobulin subtype / Immunoglobulin / Immunoglobulin/major histocompatibility complex, conserved site / Immunoglobulins and major histocompatibility complex proteins signature. / Immunoglobulin C-Type / Immunoglobulin C1-set / Immunoglobulin C1-set domain / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold 類似検索 - ドメイン・相同性 Immunoglobulin heavy constant epsilon / High affinity immunoglobulin epsilon receptor subunit alpha / High affinity immunoglobulin epsilon receptor subunit beta / High affinity immunoglobulin epsilon receptor subunit gamma 類似検索 - 構成要素生物種 Rattus norvegicus (ドブネズミ)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 2.96 Å 詳細 データ登録者Du S / Deng MJ / Xiao JY 資金援助 1件 詳細 詳細を隠すOrganization Grant number 国 Not funded
引用ジャーナル : Nature / 年 : 2024タイトル : Structural insights into the high-affinity IgE receptor FcεRI complex.著者 : Meijie Deng / Shuo Du / Handi Hou / Junyu Xiao / 要旨 : Immunoglobulin E (IgE) plays a pivotal role in allergic responses. The high-affinity IgE receptor, FcεRI, found on mast cells and basophils, is central to the effector functions of IgE. FcεRI is a ... Immunoglobulin E (IgE) plays a pivotal role in allergic responses. The high-affinity IgE receptor, FcεRI, found on mast cells and basophils, is central to the effector functions of IgE. FcεRI is a tetrameric complex, comprising FcεRIα, FcεRIβ and a homodimer of FcRγ (originally known as FcεRIγ), with FcεRIα recognizing the Fc region of IgE (Fcε) and FcεRIβ-FcRγ facilitating signal transduction. Additionally, FcRγ is a crucial component of other immunoglobulin receptors, including those for IgG (FcγRI and FcγRIIIA) and IgA (FcαRI). However, the molecular basis of FcεRI assembly and the structure of FcRγ have remained elusive. Here we elucidate the cryogenic electron microscopy structure of the Fcε-FcεRI complex. FcεRIα has an essential role in the receptor's assembly, interacting with FcεRIβ and both FcRγ subunits. FcεRIβ is structured as a compact four-helix bundle, similar to the B cell antigen CD20. The FcRγ dimer exhibits an asymmetric architecture, and coils with the transmembrane region of FcεRIα to form a three-helix bundle. A cholesterol-like molecule enhances the interaction between FcεRIβ and the FcεRIα-FcRγ complex. Our mutagenesis analyses further indicate similarities between the interaction of FcRγ with FcεRIα and FcγRIIIA, but differences in that with FcαRI. These findings deepen our understanding of the signalling mechanisms of FcεRI and offer insights into the functionality of other immune receptors dependent on FcRγ. 履歴 登録 2024年5月9日 - ヘッダ(付随情報) 公開 2024年7月10日 - マップ公開 2024年7月10日 - 更新 2025年7月2日 - 現状 2025年7月2日 処理サイト : PDBj / 状態 : 公開
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