登録情報 データベース : EMDB / ID : EMD-63357 ダウンロードとリンクタイトル Cryo-EM structure of the G15C-R66C and T83C-T83C diabody complex (CitS-diabody #7-TLR3) マップデータ 詳細 試料複合体 : CitS-diabody #1-TLR3 complex複合体 : CitSタンパク質・ペプチド : Citrate/sodium symporter複合体 : TLR3タンパク質・ペプチド : Toll-like receptor 3複合体 : Diabodyタンパク質・ペプチド : Diabody (CitS VH-TLR3 VL)タンパク質・ペプチド : Diabody (TLR3 VH-CitS VL)リガンド : CITRIC ACIDリガンド : PALMITIC ACIDリガンド : 2-acetamido-2-deoxy-beta-D-glucopyranose 詳細 キーワード Disulfide-bridged diabody / cryo-electron microscopy (cryo-EM) / small protein imaging / structural marker / antibody engineering / protein nanotechnology / STRUCTURAL PROTEIN / STRUCTURAL PROTEIN-IMMUNE SYSTEM complex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
TLR3 deficiency - HSE / response to dsRNA / UNC93B1 deficiency - HSE / TICAM1 deficiency - HSE / type III interferon production / positive regulation of type III interferon production / TRAF3 deficiency - HSE / regulation of dendritic cell cytokine production / I-kappaB phosphorylation / Toll Like Receptor 3 (TLR3) Cascade ... TLR3 deficiency - HSE / response to dsRNA / UNC93B1 deficiency - HSE / TICAM1 deficiency - HSE / type III interferon production / positive regulation of type III interferon production / TRAF3 deficiency - HSE / regulation of dendritic cell cytokine production / I-kappaB phosphorylation / Toll Like Receptor 3 (TLR3) Cascade / TLR3-mediated TICAM1-dependent programmed cell death / citrate metabolic process / inflammatory response to wounding / activation of NF-kappaB-inducing kinase activity / toll-like receptor 3 signaling pathway / detection of virus / necroptotic signaling pathway / symporter activity / organic anion transmembrane transporter activity / RIP-mediated NFkB activation via ZBP1 / hyperosmotic response / endolysosome membrane / positive regulation of cytokine production involved in inflammatory response / Trafficking and processing of endosomal TLR / positive regulation of macrophage cytokine production / sodium ion transport / toll-like receptor signaling pathway / pattern recognition receptor activity / cellular response to exogenous dsRNA / RSV-host interactions / response to exogenous dsRNA / negative regulation of osteoclast differentiation / ubiquitin-like protein ligase binding / positive regulation of interferon-alpha production / cellular response to interferon-beta / positive regulation of chemokine production / extrinsic apoptotic signaling pathway / JNK cascade / positive regulation of interleukin-12 production / Regulation of TBK1, IKKε-mediated activation of IRF3, IRF7 upon TLR3 ligation / extracellular matrix / TICAM1,TRAF6-dependent induction of TAK1 complex / TICAM1-dependent activation of IRF3/IRF7 / positive regulation of interferon-beta production / TICAM1, RIP1-mediated IKK complex recruitment / positive regulation of interleukin-8 production / positive regulation of JNK cascade / microglial cell activation / positive regulation of non-canonical NF-kappaB signal transduction / cellular response to virus / cellular response to type II interferon / positive regulation of interleukin-6 production / positive regulation of type II interferon production / cellular response to mechanical stimulus / positive regulation of inflammatory response / male gonad development / positive regulation of angiogenesis / positive regulation of tumor necrosis factor production / transmembrane signaling receptor activity / cellular response to xenobiotic stimulus / double-stranded RNA binding / signaling receptor activity / defense response to virus / positive regulation of canonical NF-kappaB signal transduction / early endosome / endosome membrane / defense response to bacterium / positive regulation of apoptotic process / Golgi membrane / lysosomal membrane / innate immune response / positive regulation of gene expression / endoplasmic reticulum membrane / signal transduction / positive regulation of transcription by RNA polymerase II / extracellular space / metal ion binding / identical protein binding / membrane / plasma membrane / cytoplasm 類似検索 - 分子機能 2-hydroxycarboxylate transporter / 2-hydroxycarboxylate transporter, Proteobacteria/Firmicutes / 2-hydroxycarboxylate transporter family / Toll-like receptor 3 trans-membrane domain / Toll-like receptor 3 trans-membrane domain / TIR domain / Leucine Rich repeat / Cysteine-rich flanking region, C-terminal / Leucine rich repeat C-terminal domain / Toll - interleukin 1 - resistance ... 2-hydroxycarboxylate transporter / 2-hydroxycarboxylate transporter, Proteobacteria/Firmicutes / 2-hydroxycarboxylate transporter family / Toll-like receptor 3 trans-membrane domain / Toll-like receptor 3 trans-membrane domain / 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 類似検索 - ドメイン・相同性 Toll-like receptor 3 / Citrate/sodium symporter 類似検索 - 構成要素生物種 Klebsiella pneumoniae (肺炎桿菌) / Homo sapiens (ヒト) / synthetic construct (人工物) 手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.1 Å 詳細 データ登録者Kim S / Kim JW / Park JG / Lee SS / Choi SH / Lee J-O / Jin MS 資金援助 韓国, 3件 詳細 詳細を隠すOrganization Grant number 国 Samsung Science and Technology Foundation SSTF-BA1702-14 韓国 National Research Foundation (NRF, Korea) RS-2024-00344154 韓国 National Research Foundation (NRF, Korea) RS-2024-00440614 韓国
引用ジャーナル : Structure / 年 : 2025タイトル : Disulfide-stabilized diabodies enable near-atomic cryo-EM imaging of small proteins: A case study of the bacterial Na/citrate symporter CitS.著者 : Subin Kim / Ji Won Kim / Jun Gyou Park / Sang Soo Lee / Seung Hun Choi / Jie-Oh Lee / Mi Sun Jin / 要旨 : Diabodies are engineered antibody fragments with two antigen-binding Fv domains. Previously, we demonstrated that they are often highly flexible but can be rigidified by introducing a disulfide bond ... Diabodies are engineered antibody fragments with two antigen-binding Fv domains. Previously, we demonstrated that they are often highly flexible but can be rigidified by introducing a disulfide bond at the Fv interface. In this study, we explored the potential of disulfide-bridged, bispecific diabodies for near-atomic cryoelectron microscopy (cryo-EM) imaging of small proteins because they can predictably link target proteins to "structural marker" proteins. As a case study, we used the bacterial citrate transporter CitS as the target protein, and the horseshoe-shaped ectodomain of human Toll-like receptor 3 (TLR3) as the marker. We show that diabodies containing one or two disulfide bonds enabled the 3D reconstruction of CitS at resolutions of 3.3 Å and 3.1 Å, respectively. This resolution surpassed previous crystallographic results and allowed us to visualize the high-resolution structural features of the transporter. Our work expands the application of diabodies in structural biology to address a key limitation in the field. 履歴 登録 2025年2月4日 - ヘッダ(付随情報) 公開 2025年3月12日 - マップ公開 2025年3月12日 - 更新 2025年6月18日 - 現状 2025年6月18日 処理サイト : PDBj / 状態 : 公開
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