+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7emf | ||||||
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タイトル | Human Mediator (deletion of MED1-IDR) in a Tail-extended conformation | ||||||
要素 |
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キーワード | TRANSCRIPTION / Mediator complex | ||||||
機能・相同性 | 機能・相同性情報 positive regulation of mediator complex assembly / positive regulation of T cell extravasation / negative regulation of smooth muscle cell differentiation / enucleate erythrocyte development / positive regulation of type II interferon-mediated signaling pathway / regulation of RNA biosynthetic process / androgen biosynthetic process / positive regulation of G0 to G1 transition / mammary gland branching involved in thelarche / retinal pigment epithelium development ...positive regulation of mediator complex assembly / positive regulation of T cell extravasation / negative regulation of smooth muscle cell differentiation / enucleate erythrocyte development / positive regulation of type II interferon-mediated signaling pathway / regulation of RNA biosynthetic process / androgen biosynthetic process / positive regulation of G0 to G1 transition / mammary gland branching involved in thelarche / retinal pigment epithelium development / G0 to G1 transition / thyroid hormone receptor signaling pathway / core mediator complex / regulation of vitamin D receptor signaling pathway / ventricular trabecula myocardium morphogenesis / thyroid hormone generation / mediator complex / nuclear retinoic acid receptor binding / positive regulation of keratinocyte differentiation / Generic Transcription Pathway / embryonic heart tube development / cellular response to thyroid hormone stimulus / embryonic hindlimb morphogenesis / peroxisome proliferator activated receptor binding / positive regulation of hepatocyte proliferation / positive regulation of chromatin binding / nuclear vitamin D receptor binding / limb development / lens development in camera-type eye / nuclear thyroid hormone receptor binding / positive regulation of intracellular estrogen receptor signaling pathway / embryonic hemopoiesis / megakaryocyte development / cellular response to steroid hormone stimulus / cellular response to hepatocyte growth factor stimulus / histone acetyltransferase binding / termination of RNA polymerase II transcription / cortical actin cytoskeleton / RSV-host interactions / epithelial cell proliferation involved in mammary gland duct elongation / LBD domain binding / fat cell differentiation / skeletal muscle cell differentiation / mammary gland branching involved in pregnancy / monocyte differentiation / somatic stem cell population maintenance / blastocyst development / general transcription initiation factor binding / negative regulation of keratinocyte proliferation / negative regulation of neuron differentiation / hematopoietic stem cell differentiation / embryonic placenta development / positive regulation of transcription initiation by RNA polymerase II / animal organ regeneration / erythrocyte development / nuclear retinoid X receptor binding / nuclear receptor-mediated steroid hormone signaling pathway / ubiquitin ligase complex / negative regulation of fibroblast proliferation / RNA polymerase II preinitiation complex assembly / keratinocyte differentiation / RORA activates gene expression / peroxisome proliferator activated receptor signaling pathway / cellular response to epidermal growth factor stimulus / lactation / Regulation of lipid metabolism by PPARalpha / positive regulation of erythrocyte differentiation / liver development / BMAL1:CLOCK,NPAS2 activates circadian gene expression / Activation of gene expression by SREBF (SREBP) / nuclear receptor coactivator activity / nuclear receptor binding / nuclear estrogen receptor binding / promoter-specific chromatin binding / transcription initiation at RNA polymerase II promoter / positive regulation of transcription elongation by RNA polymerase II / transcription coregulator activity / Heme signaling / brain development / mRNA transcription by RNA polymerase II / Transcriptional activation of mitochondrial biogenesis / cell morphogenesis / PPARA activates gene expression / Cytoprotection by HMOX1 / chromatin DNA binding / transcription coactivator binding / Transcriptional regulation of white adipocyte differentiation / Nuclear Receptor transcription pathway / DNA-directed 5'-3' RNA polymerase activity / protein import into nucleus / transcription corepressor activity / ubiquitin protein ligase activity / Circadian Clock / actin binding / angiogenesis / DNA-binding transcription factor binding / Estrogen-dependent gene expression / transcription regulator complex / transcription by RNA polymerase II / transcription coactivator activity 類似検索 - 分子機能 | ||||||
生物種 | Homo sapiens (ヒト) | ||||||
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: 3.5 Å | ||||||
データ登録者 | Yin, X. / Li, J. / Wu, Z. / Liu, W. / Xu, Y. | ||||||
引用 | ジャーナル: Science / 年: 2021 タイトル: Structures of the human Mediator and Mediator-bound preinitiation complex. 著者: Xizi Chen / Xiaotong Yin / Jiabei Li / Zihan Wu / Yilun Qi / Xinxin Wang / Weida Liu / Yanhui Xu / 要旨: The 1.3-megadalton transcription factor IID (TFIID) is required for preinitiation complex (PIC) assembly and RNA polymerase II (Pol II)-mediated transcription initiation on almost all genes. The 26- ...The 1.3-megadalton transcription factor IID (TFIID) is required for preinitiation complex (PIC) assembly and RNA polymerase II (Pol II)-mediated transcription initiation on almost all genes. The 26-subunit Mediator stimulates transcription and cyclin-dependent kinase 7 (CDK7)-mediated phosphorylation of the Pol II C-terminal domain (CTD). We determined the structures of human Mediator in the Tail module-extended (at near-atomic resolution) and Tail-bent conformations and structures of TFIID-based PIC-Mediator (76 polypeptides, ~4.1 megadaltons) in four distinct conformations. PIC-Mediator assembly induces concerted reorganization (Head-tilting and Middle-down) of Mediator and creates a Head-Middle sandwich, which stabilizes two CTD segments and brings CTD to CDK7 for phosphorylation; this suggests a CTD-gating mechanism favorable for phosphorylation. The TFIID-based PIC architecture modulates Mediator organization and TFIIH stabilization, underscoring the importance of TFIID in orchestrating PIC-Mediator assembly. | ||||||
履歴 |
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-構造の表示
ムービー |
ムービービューア |
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構造ビューア | 分子: MolmilJmol/JSmol |
-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7emf.cif.gz | 1.4 MB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7emf.ent.gz | 1.1 MB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7emf.json.gz | ツリー表示 | PDBx/mmJSON形式 | |
その他 | その他のダウンロード |
-検証レポート
文書・要旨 | 7emf_validation.pdf.gz | 969.1 KB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7emf_full_validation.pdf.gz | 1 MB | 表示 | |
XML形式データ | 7emf_validation.xml.gz | 188.9 KB | 表示 | |
CIF形式データ | 7emf_validation.cif.gz | 295.9 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/em/7emf ftp://data.pdbj.org/pub/pdb/validation_reports/em/7emf | HTTPS FTP |
-関連構造データ
-リンク
-集合体
登録構造単位 |
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1 |
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-要素
+Mediator of RNA polymerase II transcription subunit ... , 24種, 24分子 ADFGIJKNOQRSTUVWXYZ01234
-Isoform 2 of Mediator of RNA polymerase II transcription subunit ... , 2種, 2分子 HP
#6: タンパク質 | 分子量: 29112.906 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: MED8 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q96G25 |
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#12: タンパク質 | 分子量: 93136.039 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: MED16 / 発現宿主: Homo sapiens (ヒト) / 参照: UniProt: Q9Y2X0 |
-タンパク質・ペプチド / 非ポリマー , 2種, 3分子 B
#28: 化合物 | #2: タンパク質・ペプチド | | 分子量: 1439.571 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 発現宿主: Homo sapiens (ヒト) |
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-詳細
研究の焦点であるリガンドがあるか | N |
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-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 |
-試料調製
構成要素 | 名称: Structure of the human Mediator complex / タイプ: COMPLEX / Entity ID: #1-#27 / 由来: RECOMBINANT |
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分子量 | 単位: KILODALTONS/NANOMETER / 実験値: NO |
由来(天然) | 生物種: Homo sapiens (ヒト) |
由来(組換発現) | 生物種: Homo sapiens (ヒト) / 細胞: Expi293 |
緩衝液 | pH: 8 |
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: GOLD / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % |
-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: FEI TITAN KRIOS |
電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: FLOOD BEAM |
電子レンズ | モード: BRIGHT FIELD / Cs: 2.7 mm / C2レンズ絞り径: 70 µm |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER |
撮影 | 電子線照射量: 50 e/Å2 / 検出モード: SUPER-RESOLUTION フィルム・検出器のモデル: GATAN K2 SUMMIT (4k x 4k) |
電子光学装置 | エネルギーフィルタースリット幅: 20 eV |
画像スキャン | 動画フレーム数/画像: 32 |
-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: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 95433 / 対称性のタイプ: POINT |
原子モデル構築 | プロトコル: AB INITIO MODEL / 空間: REAL |