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基本情報
登録情報 | データベース: PDB / ID: 9f6y | ||||||
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タイトル | CryoEM structure of Human Mediator subunit MED23 complexed with phosphorylated Elk-1 transcription factor | ||||||
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![]() | GENE REGULATION / Mediator complex / transcription factor / Med23 / ELK-1 / phosphorylation | ||||||
機能・相同性 | ![]() positive regulation of T cell extravasation / hippocampal neuron apoptotic process / response to fibroblast growth factor / core mediator complex / cellular response to testosterone stimulus / mediator complex binding / NGF-stimulated transcription / mediator complex / transcription regulator activator activity / Generic Transcription Pathway ...positive regulation of T cell extravasation / hippocampal neuron apoptotic process / response to fibroblast growth factor / core mediator complex / cellular response to testosterone stimulus / mediator complex binding / NGF-stimulated transcription / mediator complex / transcription regulator activator activity / Generic Transcription Pathway / RSV-host interactions / ERK/MAPK targets / response to light stimulus / Estrogen-dependent nuclear events downstream of ESR-membrane signaling / positive regulation of transcription initiation by RNA polymerase II / transcription regulator inhibitor activity / RNA polymerase II preinitiation complex assembly / axon terminus / bioluminescence / generation of precursor metabolites and energy / transcription initiation at RNA polymerase II promoter / positive regulation of transcription elongation by RNA polymerase II / lung development / liver development / PPARA activates gene expression / cellular response to gamma radiation / mitochondrial membrane / Transcriptional regulation of white adipocyte differentiation / HCMV Early Events / sequence-specific double-stranded DNA binding / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / DNA-binding transcription activator activity, RNA polymerase II-specific / response to ethanol / transcription regulator complex / gene expression / RNA polymerase II-specific DNA-binding transcription factor binding / cell differentiation / DNA-binding transcription factor activity, RNA polymerase II-specific / transcription coactivator activity / transcription cis-regulatory region binding / RNA polymerase II cis-regulatory region sequence-specific DNA binding / DNA-binding transcription factor activity / neuronal cell body / dendrite / chromatin binding / positive regulation of gene expression / regulation of transcription by RNA polymerase II / regulation of DNA-templated transcription / chromatin / positive regulation of DNA-templated transcription / positive regulation of transcription by RNA polymerase II / nucleoplasm / nucleus 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: 2.98 Å | ||||||
![]() | Monte, D. / Verger, A. / Lens, Z. / villeret, V. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Structural basis of human Mediator recruitment by the phosphorylated transcription factor Elk-1. 著者: Didier Monté / Zoé Lens / Frédérique Dewitte / Marcus Fislage / Marc Aumercier / Alexis Verger / Vincent Villeret / ![]() ![]() 要旨: One function of Mediator complex subunit MED23 is to mediate transcriptional activation by the phosphorylated transcription factor Elk-1, in response to the Ras-MAPK signaling pathway. Using ...One function of Mediator complex subunit MED23 is to mediate transcriptional activation by the phosphorylated transcription factor Elk-1, in response to the Ras-MAPK signaling pathway. Using cryogenic electron microscopy, we solve a 3.0 Å structure of human MED23 complexed with the phosphorylated activation domain of Elk-1. Elk-1 binds to MED23 via a hydrophobic sequence PSIHFWSTLSP containing one phosphorylated residue (S383), which forms a tight turn around the central Phenylalanine. Binding of Elk-1 induces allosteric changes in MED23 that propagate to the opposite face of the subunit, resulting in the dynamic behavior of a 19-residue segment, which alters the molecular surface of MED23. We design a specific MED23 mutation (G382F) that disrupts Elk--1 binding and consequently impairs Elk-1-dependent serum-induced activation of target genes in the Ras-Raf-MEK-ERK signaling pathway. The structure provides molecular details and insights into a Mediator subunit-transcription factor interface. | ||||||
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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 | ![]() | 326.9 KB | 表示 | ![]() |
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PDB形式 | ![]() | 205.8 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 | ![]() | 1006.5 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1018.6 KB | 表示 | |
XML形式データ | ![]() | 41.4 KB | 表示 | |
CIF形式データ | ![]() | 62.3 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 50242MC ![]() 9f76C 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: 158294.891 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() 発現宿主: ![]() ![]() 参照: UniProt: Q9ULK4 |
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#2: タンパク質 | 分子量: 37627.406 Da / 分子数: 1 / 由来タイプ: 組換発現 詳細: fusion between GFP and ELK-1 transactivation domain (308-401) mutated at positions T336, T333, T353 and T363 (mutated to Ala) + C-terminal his tag,fusion between GFP and ELK-1 transactivation ...詳細: fusion between GFP and ELK-1 transactivation domain (308-401) mutated at positions T336, T333, T353 and T363 (mutated to Ala) + C-terminal his tag,fusion between GFP and ELK-1 transactivation domain (308-401) mutated at positions T336, T333, T353 and T363 (mutated to Ala) + C-terminal his tag,fusion between GFP and ELK-1 transactivation domain (308-401) mutated at positions T336, T333, T353 and T363 (mutated to Ala) + C-terminal his tag,fusion between GFP and ELK-1 transactivation domain (308-401) mutated at positions T336, T333, T353 and T363 (mutated to Ala) + C-terminal his tag 由来: (組換発現) ![]() ![]() ![]() |
研究の焦点であるリガンドがあるか | Y |
Has protein modification | Y |
-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: Complex between human Mediator subunit Med23 and phosphorylated transcription factor Elk1 タイプ: COMPLEX / Entity ID: all / 由来: RECOMBINANT |
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分子量 | 実験値: NO |
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 |
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R2/1 |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 95 % / 凍結前の試料温度: 277.15 K |
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電子顕微鏡撮影
顕微鏡 | モデル: JEOL CRYO ARM 300 |
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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): 1700 nm / 最小 デフォーカス(公称値): 800 nm |
撮影 | 電子線照射量: 63.6 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
EMソフトウェア | 名称: PHENIX / バージョン: 1.21_5207 / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
3次元再構成 | 解像度: 2.98 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 346324 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
精密化 | 交差検証法: NONE 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2 | ||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 70.91 Å2 | ||||||||||||||||||||||||
拘束条件 |
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