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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: 9mls | ||||||
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| タイトル | GammaH2AX containing nucleosome, Extended (Class 3) | ||||||
要素 |
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キーワード | NUCLEAR PROTEIN / phosphorylation / nucleosome / nucleosome stacking | ||||||
| 機能・相同性 | 機能・相同性情報XY body / chromatin-protein adaptor activity / protein localization to site of double-strand break / response to ionizing radiation / site of DNA damage / negative regulation of tumor necrosis factor-mediated signaling pathway / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus ...XY body / chromatin-protein adaptor activity / protein localization to site of double-strand break / response to ionizing radiation / site of DNA damage / negative regulation of tumor necrosis factor-mediated signaling pathway / negative regulation of megakaryocyte differentiation / protein localization to CENP-A containing chromatin / Chromatin modifying enzymes / Replacement of protamines by nucleosomes in the male pronucleus / CENP-A containing nucleosome / Packaging Of Telomere Ends / Recognition and association of DNA glycosylase with site containing an affected purine / Cleavage of the damaged purine / Deposition of new CENPA-containing nucleosomes at the centromere / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / telomere organization / Interleukin-7 signaling / Inhibition of DNA recombination at telomere / RNA Polymerase I Promoter Opening / Meiotic synapsis / Assembly of the ORC complex at the origin of replication / positive regulation of DNA repair / DNA damage checkpoint signaling / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / SUMOylation of chromatin organization proteins / DNA methylation / epigenetic regulation of gene expression / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / replication fork / SIRT1 negatively regulates rRNA expression / HCMV Late Events / innate immune response in mucosa / condensed nuclear chromosome / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / meiotic cell cycle / male germ cell nucleus / HDACs deacetylate histones / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / Nonhomologous End-Joining (NHEJ) / RNA Polymerase I Promoter Escape / lipopolysaccharide binding / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / double-strand break repair via homologous recombination / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / HDMs demethylate histones / G2/M DNA damage checkpoint / NoRC negatively regulates rRNA expression / DNA Damage/Telomere Stress Induced Senescence / B-WICH complex positively regulates rRNA expression / PKMTs methylate histone lysines / Meiotic recombination / Pre-NOTCH Transcription and Translation / RMTs methylate histone arginines / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Transcriptional regulation of granulopoiesis / HCMV Early Events / antimicrobial humoral immune response mediated by antimicrobial peptide / structural constituent of chromatin / antibacterial humoral response / nucleosome / heterochromatin formation / double-strand break repair / nucleosome assembly / E3 ubiquitin ligases ubiquitinate target proteins / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / site of double-strand break / HATs acetylate histones / RUNX1 regulates transcription of genes involved in differentiation of HSCs / Factors involved in megakaryocyte development and platelet production / chromatin organization / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / Processing of DNA double-strand break ends / Senescence-Associated Secretory Phenotype (SASP) / spermatogenesis / histone binding / Oxidative Stress Induced Senescence / defense response to Gram-negative bacterium / gene expression / killing of cells of another organism / Estrogen-dependent gene expression / damaged DNA binding / chromosome, telomeric region / defense response to Gram-positive bacterium / Ub-specific processing proteases / nuclear speck / cadherin binding / Amyloid fiber formation / protein heterodimerization activity / DNA damage response / centrosome / enzyme binding / protein-containing complex 類似検索 - 分子機能 | ||||||
| 生物種 | Homo sapiens (ヒト)synthetic construct (人工物) | ||||||
| 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 | ||||||
データ登録者 | Panigrahi, R. / Edwards, R. / Glover, J.N.M. | ||||||
| 資金援助 | カナダ, 1件
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引用 | ジャーナル: Nucleic Acids Res / 年: 2025タイトル: Structural insights into γH2Ax containing nucleosomes. 著者: Rashmi Panigrahi / Ross Edwards / Md Touhidul Islam / Jun Lu / Ayodeji Kulepa / Tae Hwan Kim / J N Mark Glover / ![]() 要旨: The phosphorylation of the histone variant H2AX on the nucleosome, yielding γH2AX, acts as a 'master control switch', signaling the recruitment of DNA repair factors at DNA double-stranded break ...The phosphorylation of the histone variant H2AX on the nucleosome, yielding γH2AX, acts as a 'master control switch', signaling the recruitment of DNA repair factors at DNA double-stranded break sites. This phosphorylation is recognized by BRCA1 carboxy-terminal (BRCT) domains of specific repair proteins. Using cryogenic electron microscopy (cryo-EM), we provide structural insights into diverse mononucleosome architectures and inter-nucleosomal interactions in the presence of H2AX, mimicking nucleosomes during DNA repair. We resolved three distinct stacked structures where the nucleosomal dyad axes and disk planes align parallel. The inter-nucleosomal interactions involve unique contacts mediated by the H4 N-terminal tail, exposed H2B elements, and DNA. Geometric analysis of stacking constraints, including published structures, reveals a tight distribution of rotational parameters around 0o, with the greatest variability in the translational parameter 'slide'. Our studies indicate that phosphorylation-dependent binding of BRCT domains with γH2AX nucleosomes disrupts stacking. However, no clear densities for BRCT proteins were observed, indicative of dynamic interactions. Molecular simulations replicate the stability of BRCT binding to γH2AX but do not indicate stable docked conformations of BRCT to nucleosome. We propose that BRCT recognition of γH2AX nucleosomes could contribute to chromatin decondensation during DNA damage signaling, exposing the nucleosomal acidic patch for repair factor recognition. | ||||||
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構造の表示
| 構造ビューア | 分子: Molmil Jmol/JSmol |
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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 | 9mls.cif.gz | 405.6 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9mls.ent.gz | 318.9 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9mls.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 | 9mls_validation.pdf.gz | 1.5 MB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9mls_full_validation.pdf.gz | 1.5 MB | 表示 | |
| XML形式データ | 9mls_validation.xml.gz | 40.5 KB | 表示 | |
| CIF形式データ | 9mls_validation.cif.gz | 62.3 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/ml/9mls ftp://data.pdbj.org/pub/pdb/validation_reports/ml/9mls | HTTPS FTP |
-関連構造データ
| 関連構造データ | ![]() 48379MC ![]() 9mllC ![]() 9mlnC ![]() 9mlrC ![]() 9mmkC ![]() 9mmmC ![]() 9mmnC ![]() 9mmoC ![]() 9mmtC 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 F&H 検索 |
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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
-タンパク質 , 4種, 8分子 AEBFCGDH
| #1: タンパク質 | 分子量: 17907.770 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: H3C1, H3FA, HIST1H3A, H3C2, H3FL, HIST1H3B, H3C3, H3FC HIST1H3C, H3C4, H3FB, HIST1H3D, H3C6, H3FD, HIST1H3E, H3C7, H3FI, HIST1H3F, H3C8, H3FH, HIST1H3G, H3C10, H3FK, HIST1H3H, H3C11, H3FF, ...遺伝子: H3C1, H3FA, HIST1H3A, H3C2, H3FL, HIST1H3B, H3C3, H3FC HIST1H3C, H3C4, H3FB, HIST1H3D, H3C6, H3FD, HIST1H3E, H3C7, H3FI, HIST1H3F, H3C8, H3FH, HIST1H3G, H3C10, H3FK, HIST1H3H, H3C11, H3FF, HIST1H3I, H3C12, H3FJ, HIST1H3J 発現宿主: ![]() #2: タンパク質 | 分子量: 11394.426 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: HIST1H4A, H4/A, H4FA, HIST1H4B, H4/I, H4FI, HIST1H4C, H4/G, H4FG, HIST1H4D, H4/B, H4FB, HIST1H4E, H4/J, H4FJ, HIST1H4F, H4/C, H4FC, HIST1H4H, H4/H, H4FH, HIST1H4I, H4/M, H4FM, HIST1H4J, ...遺伝子: HIST1H4A, H4/A, H4FA, HIST1H4B, H4/I, H4FI, HIST1H4C, H4/G, H4FG, HIST1H4D, H4/B, H4FB, HIST1H4E, H4/J, H4FJ, HIST1H4F, H4/C, H4FC, HIST1H4H, H4/H, H4FH, HIST1H4I, H4/M, H4FM, HIST1H4J, H4/E, H4FE, HIST1H4K, H4/D, H4FD, HIST1H4L, H4/K, H4FK, HIST2H4A, H4/N, H4F2, H4FN, HIST2H4, HIST2H4B, H4/O, H4FO, HIST4H4 発現宿主: ![]() #3: タンパク質 | 分子量: 17715.230 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: H2AX, H2AFX / 発現宿主: ![]() #4: タンパク質 | 分子量: 13935.239 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: HIST1H2BJ, H2BFR / 発現宿主: ![]() |
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-DNA鎖 , 2種, 2分子 IJ
| #5: DNA鎖 | 分子量: 44520.383 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() |
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| #6: DNA鎖 | 分子量: 44991.660 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() |
-詳細
| Has protein modification | 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 |
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試料調製
| 構成要素 | 名称: nucleosome / タイプ: COMPLEX / Entity ID: #2 / 由来: MULTIPLE SOURCES |
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| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 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: FIELD EMISSION GUN / 加速電圧: 300 kV / 照射モード: OTHER |
| 電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 2400 nm / 最小 デフォーカス(公称値): 1300 nm |
| 撮影 | 電子線照射量: 50 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k 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: 55764 / 対称性のタイプ: POINT |
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万見について




Homo sapiens (ヒト)
カナダ, 1件
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FIELD EMISSION GUN