+
データを開く
-
基本情報
| 登録情報 | データベース: PDB / ID: 7yq8 | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| タイトル | Cryo-EM structure of human topoisomerase II beta in complex with DNA and etoposide | ||||||||||||||||||||||||
要素 |
| ||||||||||||||||||||||||
キーワード | ISOMERASE/DNA / Topoisomerase / Etoposide / DNA / ISOMERASE / ISOMERASE-DNA complex | ||||||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報positive regulation of single stranded viral RNA replication via double stranded DNA intermediate / sister chromatid segregation / resolution of meiotic recombination intermediates / DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity / DNA topoisomerase (ATP-hydrolysing) / positive regulation of double-strand break repair via nonhomologous end joining / cellular response to ATP / forebrain development / DNA topological change / SUMOylation of DNA replication proteins ...positive regulation of single stranded viral RNA replication via double stranded DNA intermediate / sister chromatid segregation / resolution of meiotic recombination intermediates / DNA topoisomerase type II (double strand cut, ATP-hydrolyzing) activity / DNA topoisomerase (ATP-hydrolysing) / positive regulation of double-strand break repair via nonhomologous end joining / cellular response to ATP / forebrain development / DNA topological change / SUMOylation of DNA replication proteins / ribonucleoprotein complex binding / axonogenesis / B cell differentiation / cellular response to hydrogen peroxide / neuron migration / cellular senescence / ribonucleoprotein complex / chromatin binding / nucleolus / DNA binding / nucleoplasm / ATP binding / metal ion binding / nucleus / cytosol 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: 3.9 Å | ||||||||||||||||||||||||
データ登録者 | Naganuma, M. / Ehara, H. / Kim, D. / Nakagawa, R. / Cong, A. / Bu, H. / Jeong, J. / Jang, J. / Schellenberg, M.J. / Bunch, H. / Sekine, S. | ||||||||||||||||||||||||
| 資金援助 | 日本, 1件
| ||||||||||||||||||||||||
引用 | ジャーナル: Nat Commun / 年: 2023タイトル: ERK2-topoisomerase II regulatory axis is important for gene activation in immediate early genes. 著者: Heeyoun Bunch / Deukyeong Kim / Masahiro Naganuma / Reiko Nakagawa / Anh Cong / Jaehyeon Jeong / Haruhiko Ehara / Hongha Vu / Jeong Ho Chang / Matthew J Schellenberg / Shun-Ichi Sekine / ![]() 要旨: The function of the mitogen-activated protein kinase signaling pathway is required for the activation of immediate early genes (IEGs), including EGR1 and FOS, for cell growth and proliferation. ...The function of the mitogen-activated protein kinase signaling pathway is required for the activation of immediate early genes (IEGs), including EGR1 and FOS, for cell growth and proliferation. Recent studies have identified topoisomerase II (TOP2) as one of the important regulators of the transcriptional activation of IEGs. However, the mechanism underlying transcriptional regulation involving TOP2 in IEG activation has remained unknown. Here, we demonstrate that ERK2, but not ERK1, is important for IEG transcriptional activation and report a critical ELK1 binding sequence for ERK2 function at the EGR1 gene. Our data indicate that both ERK1 and ERK2 extensively phosphorylate the C-terminal domain of TOP2B at mutual and distinctive residues. Although both ERK1 and ERK2 enhance the catalytic rate of TOP2B required to relax positive DNA supercoiling, ERK2 delays TOP2B catalysis of negative DNA supercoiling. In addition, ERK1 may relax DNA supercoiling by itself. ERK2 catalytic inhibition or knock-down interferes with transcription and deregulates TOP2B in IEGs. Furthermore, we present the first cryo-EM structure of the human cell-purified TOP2B and etoposide together with the EGR1 transcriptional start site (-30 to +20) that has the strongest affinity to TOP2B within -423 to +332. The structure shows TOP2B-mediated breakage and dramatic bending of the DNA. Transcription is activated by etoposide, while it is inhibited by ICRF193 at EGR1 and FOS, suggesting that TOP2B-mediated DNA break to favor transcriptional activation. Taken together, this study suggests that activated ERK2 phosphorylates TOP2B to regulate TOP2-DNA interactions and favor transcriptional activation in IEGs. We propose that TOP2B association, catalysis, and dissociation on its substrate DNA are important processes for regulating transcription and that ERK2-mediated TOP2B phosphorylation may be key for the catalysis and dissociation steps. | ||||||||||||||||||||||||
| 履歴 |
|
-
構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
|---|
-
ダウンロードとリンク
-
ダウンロード
| PDBx/mmCIF形式 | 7yq8.cif.gz | 335.4 KB | 表示 | PDBx/mmCIF形式 |
|---|---|---|---|---|
| PDB形式 | pdb7yq8.ent.gz | 244.2 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 7yq8.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 | 7yq8_validation.pdf.gz | 1.4 MB | 表示 | wwPDB検証レポート |
|---|---|---|---|---|
| 文書・詳細版 | 7yq8_full_validation.pdf.gz | 1.5 MB | 表示 | |
| XML形式データ | 7yq8_validation.xml.gz | 53.4 KB | 表示 | |
| CIF形式データ | 7yq8_validation.cif.gz | 81.4 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/yq/7yq8 ftp://data.pdbj.org/pub/pdb/validation_reports/yq/7yq8 | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 34022MC 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 ( |
|---|---|
| 類似構造データ | 類似検索 - 機能・相同性 F&H 検索 |
-
リンク
-
集合体
| 登録構造単位 | ![]()
|
|---|---|
| 1 |
|
-
要素
| #1: タンパク質 | 分子量: 183542.250 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: TOP2B / 発現宿主: Homo sapiens (ヒト)参照: UniProt: Q02880, DNA topoisomerase (ATP-hydrolysing) #2: DNA鎖 | 分子量: 15449.866 Da / 分子数: 2 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト)#3: DNA鎖 | 分子量: 15364.773 Da / 分子数: 2 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト)#4: 化合物 | #5: 化合物 | 研究の焦点であるリガンドがあるか | Y | Has protein modification | N | |
|---|
-実験情報
-実験
| 実験 | 手法: 電子顕微鏡法 |
|---|---|
| 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 |
| ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 由来(天然) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||||||
| 由来(組換発現) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||||||
| 緩衝液 | pH: 8 | ||||||||||||||||||||||||
| 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 |
-
電子顕微鏡撮影
| 実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
|---|---|
| 顕微鏡 | モデル: TFS 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 / 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: 49 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) |
-
解析
| ソフトウェア | 名称: PHENIX / バージョン: 1.19.2_4158: / 分類: 精密化 | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| EMソフトウェア | 名称: PHENIX / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
| CTF補正 | タイプ: NONE | ||||||||||||||||||||||||
| 対称性 | 点対称性: C2 (2回回転対称) | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.9 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 26067 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 拘束条件 |
|
ムービー
コントローラー
万見について




Homo sapiens (ヒト)
日本, 1件
引用


PDBj











































FIELD EMISSION GUN