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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 9opf | ||||||
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タイトル | Context-Dependent Variability Of HIF Heterodimers Influences Interactions With Macromolecular And Small Molecule Partners | ||||||
![]() | Transforming acidic coiled-coil-containing protein 3 | ||||||
![]() | PROTEIN BINDING / coiled-coiled / coactivator | ||||||
機能・相同性 | ![]() microtubule cytoskeleton organization involved in mitosis / metaphase/anaphase transition of mitotic cell cycle / nuclear migration / NOTCH3 Activation and Transmission of Signal to the Nucleus / regulation of mitotic spindle organization / mitotic spindle organization / Negative regulation of NOTCH4 signaling / cerebral cortex development / centriolar satellite / microtubule cytoskeleton organization ...microtubule cytoskeleton organization involved in mitosis / metaphase/anaphase transition of mitotic cell cycle / nuclear migration / NOTCH3 Activation and Transmission of Signal to the Nucleus / regulation of mitotic spindle organization / mitotic spindle organization / Negative regulation of NOTCH4 signaling / cerebral cortex development / centriolar satellite / microtubule cytoskeleton organization / spindle pole / mitotic spindle / ciliary basal body / cell division / intracellular membrane-bounded organelle / Golgi apparatus / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||
生物種 | ![]() | ||||||
手法 | ![]() ![]() ![]() | ||||||
![]() | Isiorho, E.A. / Xu, X. / Gardner, K.H. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: CONTEXT-DEPENDENT VARIABILITY OF HIF HETERODIMERS INFLUENCES INTERACTIONS WITH MACROMOLECULAR AND SMALL MOLECULE PARTNERS. 著者: Joseph D Closson / Xingjian Xu / Meiling Zhang / Tarsisius T Tiyani / Leandro Pimentel Marcelino / Eta A Isiorho / Jason S Nagati / Joseph A Garcia / Kevin H Gardner / ![]() 要旨: Hypoxia inducible factors (HIFs) are transcription factors that coordinate cellular responses to low oxygen levels, functioning as an α/β heterodimer which binds a short hypoxia response element ...Hypoxia inducible factors (HIFs) are transcription factors that coordinate cellular responses to low oxygen levels, functioning as an α/β heterodimer which binds a short hypoxia response element (HRE) DNA sequence. Prior studies suggest HIF/HRE complexes are augmented by the binding of additional factors nearby, but those interactions are not well understood. Here, we integrated structural and biochemical approaches to investigate several functionally relevant HIF assemblies with other protein, small molecule, and DNA partners. First, we used cryo-electron microscopy (cryo-EM) to establish HIF-1 and HIF-2 form novel "dimer-of-heterodimers" (DoHD) complexes on extended human EPO enhancer sequences, showing that one heterodimer bound at a canonical HRE site with the second binding in an inverted fashion to an HRE-adjacent sequence (HAS) 8 bp away. Consistent with ARNT PAS-B domains predominating interactions within a DoHD, we found HIF-1 and HIF-2 assemble mixed DoHD complexes on the same DNA. Second, we saw substantial variability among ligands for isolated ARNT or HIF-2α PAS-B domains to bind larger complexes: for example, the ARNT PAS-B binding KG-548 and KG-279 ligands both bound the simpler HIF-2 heterodimer but exhibited differential binding to a HIF-2 DoHD. Finally, we combined cryo-EM and hydrogen-deuterium exchange by mass spectrometry (HDX-MS) to show how HIF-1 and HIF-2 heterodimers engage the transforming acidic coiled-coil containing protein 3 (TACC3) coactivator via both ARNT and HIF-α subunits, though this was unseen in the larger DoHD. Our findings highlight the importance of both molecular context and dynamics in biomolecular complex formation, adding to the complexities of potential regulation. | ||||||
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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 | ![]() | 66.2 KB | 表示 | ![]() |
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PDB形式 | ![]() | 40.9 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 437.5 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 442.9 KB | 表示 | |
XML形式データ | ![]() | 7.4 KB | 表示 | |
CIF形式データ | ![]() | 8.7 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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単位格子 |
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Components on special symmetry positions |
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非結晶学的対称性 (NCS) | NCSドメイン:
NCSドメイン領域: Component-ID: 1 / Ens-ID: ens_1 / Beg auth comp-ID: ILE / Beg label comp-ID: ILE / End auth comp-ID: GLU / End label comp-ID: GLU / Auth seq-ID: 782 - 836 / Label seq-ID: 25 - 79
NCS oper: (Code: givenMatrix: (0.993825368803, 0.106985973238, 0.0294132258172), (0.105891882085, -0.993706269183, 0.0365343659428), (0.0331367715884, -0.0331941578672, -0.998899445516)ベクター: - ...NCS oper: (Code: given Matrix: (0.993825368803, 0.106985973238, 0.0294132258172), ベクター: |
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要素
#1: タンパク質 | 分子量: 9354.629 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #2: 水 | ChemComp-HOH / | Has protein modification | N | |
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-実験情報
-実験
実験 | 手法: ![]() |
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試料調製
結晶 | マシュー密度: 2.67 Å3/Da / 溶媒含有率: 53.88 % |
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結晶化 | 温度: 298 K / 手法: 蒸気拡散法, シッティングドロップ法 / pH: 7 詳細: 0.1 M imidazole, 50% (+/-)-2-Methyl-2,4-pentanediol (MPD) |
-データ収集
回折 | 平均測定温度: 100 K / Serial crystal experiment: N |
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放射光源 | 由来: ![]() ![]() ![]() |
検出器 | タイプ: DECTRIS EIGER X 9M / 検出器: PIXEL / 日付: 2022年4月5日 |
放射 | プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray |
放射波長 | 波長: 0.9201 Å / 相対比: 1 |
反射 | 解像度: 2.28→29.02 Å / Num. obs: 9247 / % possible obs: 98.37 % / 冗長度: 3.3 % / Biso Wilson estimate: 48.44 Å2 / CC1/2: 0.992 / Rmerge(I) obs: 0.085 / Net I/σ(I): 7 |
反射 シェル | 解像度: 2.28→2.4 Å / Rmerge(I) obs: 0.63 / Num. unique obs: 1264 / CC1/2: 0.58 |
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解析
ソフトウェア |
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精密化 | 構造決定の手法: ![]() 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2
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溶媒の処理 | 減衰半径: 0.9 Å / VDWプローブ半径: 1.1 Å / 溶媒モデル: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 78.65 Å2 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
精密化ステップ | サイクル: LAST / 解像度: 2.28→29.02 Å
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拘束条件 |
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Refine LS restraints NCS | タイプ: Torsion NCS / Rms dev position: 2.32470545557 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
LS精密化 シェル |
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