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基本情報
登録情報 | データベース: PDB / ID: 8vhg | ||||||
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タイトル | Structure of the BMAL1/HIF2A heterodimer in Complex with DNA | ||||||
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![]() | TRANSCRIPTION/DNA / Transcriptional factors / heterodimer / DNA recognition / Circadian-dependent cardioprotection / TRANSCRIPTION-DNA complex | ||||||
機能・相同性 | ![]() Cellular response to hypoxia / CLOCK-BMAL transcription complex / positive regulation of skeletal muscle cell differentiation / regulation of hair cycle / positive regulation of protein acetylation / NPAS4 regulates expression of target genes / negative regulation of nuclear receptor-mediated glucocorticoid signaling pathway / Regulation of gene expression by Hypoxia-inducible Factor / maternal process involved in parturition / myoblast fate commitment ...Cellular response to hypoxia / CLOCK-BMAL transcription complex / positive regulation of skeletal muscle cell differentiation / regulation of hair cycle / positive regulation of protein acetylation / NPAS4 regulates expression of target genes / negative regulation of nuclear receptor-mediated glucocorticoid signaling pathway / Regulation of gene expression by Hypoxia-inducible Factor / maternal process involved in parturition / myoblast fate commitment / regulation of type B pancreatic cell development / Oxygen-dependent proline hydroxylation of Hypoxia-inducible Factor Alpha / bHLH transcription factor binding / regulation of cellular senescence / regulation of protein neddylation / chromatoid body / Neddylation / norepinephrine metabolic process / positive regulation of circadian rhythm / surfactant homeostasis / oxidative stress-induced premature senescence / negative regulation of TOR signaling / epithelial cell maturation / negative regulation of cold-induced thermogenesis / response to redox state / negative regulation of fat cell differentiation / regulation of protein catabolic process / E-box binding / hemopoiesis / regulation of neurogenesis / blood vessel remodeling / embryonic placenta development / cis-regulatory region sequence-specific DNA binding / energy homeostasis / visual perception / regulation of insulin secretion / regulation of heart rate / erythrocyte differentiation / mitochondrion organization / transcription coregulator activity / lung development / circadian regulation of gene expression / mRNA transcription by RNA polymerase II / transcription coactivator binding / PML body / autophagy / multicellular organismal-level iron ion homeostasis / circadian rhythm / protein import into nucleus / positive regulation of canonical Wnt signaling pathway / positive regulation of cold-induced thermogenesis / DNA-binding transcription activator activity, RNA polymerase II-specific / gene expression / angiogenesis / spermatogenesis / cellular response to hypoxia / transcription regulator complex / RNA polymerase II-specific DNA-binding transcription factor binding / response to oxidative stress / sequence-specific DNA binding / proteasome-mediated ubiquitin-dependent protein catabolic process / transcription by RNA polymerase II / cell differentiation / DNA-binding transcription factor activity, RNA polymerase II-specific / response to hypoxia / transcription cis-regulatory region binding / regulation of cell cycle / nuclear speck / nuclear body / RNA polymerase II cis-regulatory region sequence-specific DNA binding / protein heterodimerization activity / DNA-binding transcription factor activity / negative regulation of DNA-templated transcription / regulation of DNA-templated transcription / regulation of transcription by RNA polymerase II / positive regulation of DNA-templated transcription / positive regulation of transcription by RNA polymerase II / DNA binding / nucleoplasm / nucleus / 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: 3.6 Å | ||||||
![]() | Li, T. / Tsai, K.L. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: BMAL1-HIF2A heterodimer modulates circadian variations of myocardial injury. 著者: Wei Ruan / Tao Li / In Hyuk Bang / Jaewoong Lee / Wankun Deng / Xinxin Ma / Cong Luo / Fang Du / Seung-Hee Yoo / Boyun Kim / Jiwen Li / Xiaoyi Yuan / Katherine Figarella / Yu A An / Yin-Ying ...著者: Wei Ruan / Tao Li / In Hyuk Bang / Jaewoong Lee / Wankun Deng / Xinxin Ma / Cong Luo / Fang Du / Seung-Hee Yoo / Boyun Kim / Jiwen Li / Xiaoyi Yuan / Katherine Figarella / Yu A An / Yin-Ying Wang / Yafen Liang / Matthew DeBerge / Dongze Zhang / Zhen Zhou / Yanyu Wang / Joshua M Gorham / Jonathan G Seidman / Christine E Seidman / Sary F Aranki / Ragini Nair / Lei Li / Jagat Narula / Zhongming Zhao / Alemayehu A Gorfe / Jochen D Muehlschlegel / Kuang-Lei Tsai / Holger K Eltzschig / ![]() ![]() ![]() 要旨: Acute myocardial infarction is a leading cause of morbidity and mortality worldwide. Clinical studies have shown that the severity of cardiac injury after myocardial infarction exhibits a circadian ...Acute myocardial infarction is a leading cause of morbidity and mortality worldwide. Clinical studies have shown that the severity of cardiac injury after myocardial infarction exhibits a circadian pattern, with larger infarcts and poorer outcomes in patients experiencing morning-onset events. However, the molecular mechanisms underlying these diurnal variations remain unclear. Here we show that the core circadian transcription factor BMAL1 regulates circadian-dependent myocardial injury by forming a transcriptionally active heterodimer with a non-canonical partner-hypoxia-inducible factor 2 alpha (HIF2A)-in a diurnal manner. To substantiate this finding, we determined the cryo-EM structure of the BMAL1-HIF2A-DNA complex, revealing structural rearrangements within BMAL1 that enable cross-talk between circadian rhythms and hypoxia signalling. BMAL1 modulates the circadian hypoxic response by enhancing the transcriptional activity of HIF2A and stabilizing the HIF2A protein. We further identified amphiregulin (AREG) as a rhythmic target of the BMAL1-HIF2A complex, critical for regulating daytime variations of myocardial injury. Pharmacologically targeting the BMAL1-HIF2A-AREG pathway provides cardioprotection, with maximum efficacy when aligned with the pathway's circadian phase. These findings identify a mechanism governing circadian variations of myocardial injury and highlight the therapeutic potential of clock-based pharmacological interventions for treating ischaemic heart disease. | ||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 130.6 KB | 表示 | ![]() |
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PDB形式 | ![]() | 90.4 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
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 | ![]() 43237MC 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: 43372.305 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
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#2: タンパク質 | 分子量: 49248.117 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() ![]() |
#3: DNA鎖 | 分子量: 7245.672 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() ![]() |
#4: DNA鎖 | 分子量: 7498.799 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) ![]() ![]() |
Has protein modification | N |
-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: Ternary complex of the BMAL1/HIF2A heterodimer bound with DNA タイプ: COMPLEX / Entity ID: all / 由来: MULTIPLE SOURCES |
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由来(天然) | 生物種: ![]() ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 |
試料 | 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
急速凍結 | 凍結剤: ETHANE |
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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: TFS KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2500 nm / 最小 デフォーカス(公称値): 1000 nm |
撮影 | 電子線照射量: 75 e/Å2 フィルム・検出器のモデル: GATAN K2 QUANTUM (4k x 4k) |
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解析
CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
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3次元再構成 | 解像度: 3.6 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 41991 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 最高解像度: 3.6 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||
拘束条件 |
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