登録情報 データベース : EMDB / ID : EMD-30004 構造の表示 ダウンロードとリンクタイトル Cryo-EM structure of human secretory immunoglobulin A マップデータ 詳細 試料複合体 : Ternary complex of IgA-Fc with the J chain and pIgR/SCタンパク質・ペプチド : Interleukin-2,Immunoglobulin heavy constant alpha 1タンパク質・ペプチド : Immunoglobulin J chainタンパク質・ペプチド : Polymeric immunoglobulin receptor 詳細 キーワード immunoglobulin / dimer / transcytosis / secreted / IMMUNE SYSTEM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
polymeric immunoglobulin receptor activity / immunoglobulin transcytosis in epithelial cells mediated by polymeric immunoglobulin receptor / kappa-type opioid receptor binding / polymeric immunoglobulin binding / regulation of T cell homeostatic proliferation / regulation of CD4-positive, alpha-beta T cell proliferation / dimeric IgA immunoglobulin complex / interleukin-2 receptor binding / secretory dimeric IgA immunoglobulin complex / pentameric IgM immunoglobulin complex ... polymeric immunoglobulin receptor activity / immunoglobulin transcytosis in epithelial cells mediated by polymeric immunoglobulin receptor / kappa-type opioid receptor binding / polymeric immunoglobulin binding / regulation of T cell homeostatic proliferation / regulation of CD4-positive, alpha-beta T cell proliferation / dimeric IgA immunoglobulin complex / interleukin-2 receptor binding / secretory dimeric IgA immunoglobulin complex / pentameric IgM immunoglobulin complex / monomeric IgA immunoglobulin complex / Fc receptor signaling pathway / secretory IgA immunoglobulin complex / glycosphingolipid binding / negative regulation of lymphocyte proliferation / positive regulation of plasma cell differentiation / response to tacrolimus / negative regulation of T-helper 17 cell differentiation / positive regulation of tissue remodeling / IgA binding / IgA immunoglobulin complex / RUNX1 and FOXP3 control the development of regulatory T lymphocytes (Tregs) / detection of chemical stimulus involved in sensory perception of bitter taste / glomerular filtration / leukocyte activation involved in immune response / positive regulation of isotype switching to IgG isotypes / interleukin-2-mediated signaling pathway / activated T cell proliferation / cell surface receptor signaling pathway via STAT / IgG immunoglobulin complex / kinase activator activity / natural killer cell activation / Interleukin-2 signaling / positive regulation of regulatory T cell differentiation / immunoglobulin receptor binding / azurophil granule membrane / immunoglobulin complex, circulating / negative regulation of B cell apoptotic process / positive regulation of immunoglobulin production / positive regulation of dendritic spine development / receptor clustering / positive regulation of interleukin-17 production / positive regulation of activated T cell proliferation / positive regulation of respiratory burst / humoral immune response / T cell differentiation / complement activation, classical pathway / Interleukin receptor SHC signaling / Scavenging of heme from plasma / antigen binding / extrinsic apoptotic signaling pathway in absence of ligand / positive regulation of B cell proliferation / cytokine activity / Cell surface interactions at the vascular wall / B cell receptor signaling pathway / growth factor activity / negative regulation of inflammatory response / epidermal growth factor receptor signaling pathway / positive regulation of type II interferon production / positive regulation of inflammatory response / antibacterial humoral response / transmembrane signaling receptor activity / cell-cell signaling / positive regulation of cytosolic calcium ion concentration / RAF/MAP kinase cascade / carbohydrate binding / positive regulation of cell growth / protein-containing complex assembly / protein-macromolecule adaptor activity / phospholipase C-activating G protein-coupled receptor signaling pathway / blood microparticle / adaptive immune response / response to ethanol / transcription by RNA polymerase II / receptor complex / cell adhesion / immune response / innate immune response / positive regulation of cell population proliferation / Neutrophil degranulation / negative regulation of apoptotic process / signal transduction / protein homodimerization activity / positive regulation of transcription by RNA polymerase II / extracellular space / extracellular exosome / extracellular region / plasma membrane 類似検索 - 分子機能 Interleukin-2 / Interleukin-2, conserved site / Interleukin 2 / Interleukin-2 signature. / Interleukin-2 family / Immunoglobulin J chain / Immunoglobulin J chain / : / Four-helical cytokine-like, core / Immunoglobulin ... Interleukin-2 / Interleukin-2, conserved site / Interleukin 2 / Interleukin-2 signature. / Interleukin-2 family / Immunoglobulin J chain / Immunoglobulin J chain / : / Four-helical cytokine-like, core / Immunoglobulin / Immunoglobulin domain / : / Immunoglobulin V-Type / Immunoglobulin V-set domain / Immunoglobulin V-set 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 J chain / Polymeric immunoglobulin receptor / Immunoglobulin heavy constant alpha 1 / Interleukin-2 類似検索 - 構成要素生物種 Homo sapiens (ヒト)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.15 Å 詳細 データ登録者Wang Y / Wang G 資金援助 中国, 1件 詳細 詳細を隠すOrganization Grant number 国 National Science Foundation (NSF, China) 中国
引用ジャーナル : Cell Res / 年 : 2020タイトル : Structural insights into secretory immunoglobulin A and its interaction with a pneumococcal adhesin.著者 : Yuxin Wang / Guopeng Wang / Yaxin Li / Qinyu Zhu / Hao Shen / Ning Gao / Junyu Xiao / 要旨 : Secretory Immunoglobulin A (SIgA) is the most abundant antibody at the mucosal surface. It possesses two additional subunits besides IgA: the joining chain (J-chain) and secretory component (SC). SC ... Secretory Immunoglobulin A (SIgA) is the most abundant antibody at the mucosal surface. It possesses two additional subunits besides IgA: the joining chain (J-chain) and secretory component (SC). SC is the ectodomain of the polymeric immunoglobulin receptor (pIgR), which functions to transport IgA to the mucosa. How the J-chain and pIgR/SC facilitate the assembly and secretion of SIgA remains incompletely understood. Furthermore, during the infection of Streptococcus pneumoniae, the pneumococcal adhesin SpsA hijacks pIgR/SC and SIgA to gain entry to human cells and evade host defense. How SpsA targets pIgR/SC and SIgA also remains elusive. Here we report a cryo-electron microscopy structure of the Fc region of IgA1 (Fcα) in complex with the J-chain and SC (Fcα-J-SC), which reveals the organization principle of SIgA. We also present a structure of Fcα-J-SC complexed with SpsA, which uncovers the specific interactions between SpsA and human pIgR/SC. These results advance the molecular understanding of SIgA and shed light on S. pneumoniae pathogenesis. 履歴 登録 2020年2月10日 - ヘッダ(付随情報) 公開 2020年5月27日 - マップ公開 2020年5月27日 - 更新 2024年11月13日 - 現状 2024年11月13日 処理サイト : PDBj / 状態 : 公開
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