登録情報 データベース : EMDB / ID : EMD-37831 ダウンロードとリンクタイトル Cryo-EM Structure of Human TLR4/MD-2/DLAM3 Complex マップデータ 詳細 試料複合体 : human TLR4/MD2/DLAM3 complexタンパク質・ペプチド : Toll-like receptor 4タンパク質・ペプチド : Lymphocyte antigen 96リガンド : 2-amino-2-deoxy-4-O-phosphono-alpha-D-glucopyranoseリガンド : 2-acetamido-2-deoxy-beta-D-glucopyranoseリガンド : (3R)-3-(dodecanoyloxy)tetradecanoic acidリガンド : (3R)-3-(tetradecanoyloxy)tetradecanoic acidリガンド : 2-(hydroxymethyl)-5-methoxy-3,6-bis(oxidanyl)pyran-4-one 残り2件を表示 表示を減らす 詳細 キーワード Innate immune system / Toll-like receptors / TLR4 agonist / Vaccine adjuvants / Disaccharide-based lipid A mimetices / 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
detection of fungus / nitric oxide production involved in inflammatory response / MHC class II biosynthetic process / positive regulation of cellular response to macrophage colony-stimulating factor stimulus / lipopolysaccharide immune receptor activity / positive regulation of nucleotide-binding oligomerization domain containing 1 signaling pathway / positive regulation of matrix metallopeptidase secretion / Toll-like receptor 4 binding / lipopolysaccharide receptor complex / detection of lipopolysaccharide ... detection of fungus / nitric oxide production involved in inflammatory response / MHC class II biosynthetic process / positive regulation of cellular response to macrophage colony-stimulating factor stimulus / lipopolysaccharide immune receptor activity / positive regulation of nucleotide-binding oligomerization domain containing 1 signaling pathway / positive regulation of matrix metallopeptidase secretion / Toll-like receptor 4 binding / lipopolysaccharide receptor complex / detection of lipopolysaccharide / regulation of dendritic cell cytokine production / MyD88-independent TLR4 cascade / negative regulation of interleukin-23 production / TRIF-mediated programmed cell death / cellular response to oxidised low-density lipoprotein particle stimulus / wound healing involved in inflammatory response / B cell proliferation involved in immune response / nucleotide-binding oligomerization domain containing 1 signaling pathway / positive regulation of nucleotide-binding oligomerization domain containing 2 signaling pathway / positive regulation of stress-activated MAPK cascade / Toll Like Receptor 4 (TLR4) Cascade / intestinal epithelial structure maintenance / Caspase activation via Death Receptors in the presence of ligand / positive regulation of interleukin-1 production / Regulation of TLR by endogenous ligand / macrophage activation / astrocyte development / TRIF-dependent toll-like receptor signaling pathway / microglia differentiation / NAD+ nucleosidase activity, cyclic ADP-ribose generating / nucleotide-binding oligomerization domain containing 2 signaling pathway / positive regulation of MHC class II biosynthetic process / positive regulation of macrophage activation / positive regulation of platelet activation / positive regulation of lipopolysaccharide-mediated signaling pathway / negative regulation of interleukin-17 production / positive regulation of cytokine production involved in inflammatory response / MyD88 deficiency (TLR2/4) / positive regulation of chemokine (C-X-C motif) ligand 2 production / positive regulation of extrinsic apoptotic signaling pathway / negative regulation of cold-induced thermogenesis / IRAK4 deficiency (TLR2/4) / positive regulation of macrophage cytokine production / positive regulation of smooth muscle cell migration / MyD88-dependent toll-like receptor signaling pathway / MyD88:MAL(TIRAP) cascade initiated on plasma membrane / T-helper 1 type immune response / toll-like receptor 4 signaling pathway / toll-like receptor signaling pathway / RSV-host interactions / positive regulation of NLRP3 inflammasome complex assembly / positive regulation of reactive oxygen species biosynthetic process / negative regulation of osteoclast differentiation / cellular response to lipoteichoic acid / negative regulation of interleukin-6 production / negative regulation of type II interferon production / Respiratory syncytial virus (RSV) attachment and entry / positive regulation of interferon-alpha production / positive regulation of interleukin-10 production / negative regulation of tumor necrosis factor production / phagocytosis / Regulation of TBK1, IKKε (IKBKE)-mediated activation of IRF3, IRF7 / IRAK2 mediated activation of TAK1 complex upon TLR7/8 or 9 stimulation / phagocytic cup / TRAF6-mediated induction of TAK1 complex within TLR4 complex / stress-activated MAPK cascade / positive regulation of chemokine production / cellular response to platelet-derived growth factor stimulus / Activation of IRF3, IRF7 mediated by TBK1, IKKε (IKBKE) / JNK cascade / ruffle / positive regulation of B cell proliferation / ERK1 and ERK2 cascade / nitric oxide biosynthetic process / IKK complex recruitment mediated by RIP1 / positive regulation of interleukin-12 production / positive regulation of smooth muscle cell proliferation / positive regulation of interferon-beta production / lipopolysaccharide-mediated signaling pathway / positive regulation of interleukin-1 beta production / positive regulation of interleukin-8 production / positive regulation of JNK cascade / lipopolysaccharide binding / Heme signaling / cellular response to mechanical stimulus / positive regulation of NF-kappaB transcription factor activity / negative regulation of ERK1 and ERK2 cascade / cellular response to type II interferon / positive regulation of interleukin-6 production / positive regulation of type II interferon production / positive regulation of inflammatory response / cellular response to amyloid-beta / positive regulation of nitric oxide biosynthetic process / positive regulation of tumor necrosis factor production / transmembrane signaling receptor activity / ER-Phagosome pathway / signaling receptor activity / amyloid-beta binding / cellular response to lipopolysaccharide / response to lipopolysaccharide 類似検索 - 分子機能 Lymphocyte antigen 96 / ML domain / MD-2-related lipid-recognition domain / Domain involved in innate immunity and lipid metabolism. / Toll-like receptor / Leucine rich repeat 4 / Leucine Rich repeats (2 copies) / TIR domain / Leucine Rich repeat / Cysteine-rich flanking region, C-terminal ... Lymphocyte antigen 96 / ML domain / MD-2-related lipid-recognition domain / Domain involved in innate immunity and lipid metabolism. / Toll-like receptor / Leucine rich repeat 4 / Leucine Rich repeats (2 copies) / TIR domain / Leucine Rich repeat / Cysteine-rich flanking region, C-terminal / Leucine rich repeat C-terminal domain / Toll - interleukin 1 - resistance / TIR domain profile. / Leucine-rich repeat, SDS22-like subfamily / Toll/interleukin-1 receptor homology (TIR) domain / Toll/interleukin-1 receptor homology (TIR) domain superfamily / Leucine rich repeat / Leucine-rich repeat, typical subtype / Leucine-rich repeats, typical (most populated) subfamily / Leucine-rich repeat profile. / Leucine-rich repeat / Leucine-rich repeat domain superfamily / Immunoglobulin E-set 類似検索 - ドメイン・相同性 Lymphocyte antigen 96 / Toll-like receptor 4 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 : 2.9 Å 詳細 データ登録者Fu Y / Kim H / Kim HM 資金援助 韓国, 1件 詳細 詳細を隠すOrganization Grant number 国 Other government Institute for Basic Science, IBS 韓国
引用ジャーナル : Nat Commun / 年 : 2025タイトル : Structural insight into TLR4/MD-2 activation by synthetic LPS mimetics with distinct binding modes.著者 : Yaoyao Fu / Hyojin Kim / Dong Sun Lee / Ah-Reum Han / Holger Heine / Alla Zamyatina / Ho Min Kim / 要旨 : The mammalian pattern-recognition receptor TLR4/MD-2 (Toll-like receptor 4/myeloid differentiation factor-2) can be activated by a wide variety of pathogen-associated and endogenous molecules, with ... The mammalian pattern-recognition receptor TLR4/MD-2 (Toll-like receptor 4/myeloid differentiation factor-2) can be activated by a wide variety of pathogen-associated and endogenous molecules, with Gram-negative bacterial lipopolysaccharide (LPS) being the primary natural TLR4 agonist. Activation of TLR4 triggers cellular signaling that enables the beneficial innate immune responses and enhances adaptive immunity, thereby emphasizing the potential of TLR4 agonists for the management of diseases with an immunopathological background and for use as vaccine adjuvants. Given the challenges associated with LPS-derived products, including structural complexity, heterogeneity, toxicity, and species specificity, synthetic molecules targeting TLR4/MD-2 offer a promising alternative. Here, we elucidate the structural basis for the recognition of synthetic LPS-mimicking glycolipids, Disaccharide Lipid A Mimetics (DLAMs), by human and mouse TLR4/MD-2 through cryo-EM structures of six dimeric [TLR4/MD-2/ligand] complexes resolved at 2.2-3.1 Å. We reveal that the specific binding modes of DLAMs, distinct from those of LPS, are essential for the species-independent TLR4 agonistic activity. DLAMs function as a molecular bridge, effectively induce the dimerization of TLR4/MD-2 complexes through specific carbohydrate structure-relevant ligand-protein interactions. Our findings reveal the distinct molecular modes of TLR4 activation, and provide a structural basis for the rationale design and development of innovative, highly potent TLR4-targeting immunotherapeutics and adjuvants. 履歴 登録 2023年10月18日 - ヘッダ(付随情報) 公開 2024年10月23日 - マップ公開 2024年10月23日 - 更新 2025年5月14日 - 現状 2025年5月14日 処理サイト : PDBj / 状態 : 公開
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