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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: 9zqa | |||||||||||||||||||||
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| タイトル | Nucleosome with an SSB at SHL -2.8 in complex with the WGR domain of human PARP2, Class 2 | |||||||||||||||||||||
要素 |
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キーワード | DNA BINDING PROTEIN/DNA / DNA damage binding protein / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex | |||||||||||||||||||||
| 機能・相同性 | 機能・相同性情報HDMs demethylate histones / PKMTs methylate histone lysines / Interleukin-7 signaling / Chromatin modifying enzymes / : / SUMOylation of chromatin organization proteins / Metalloprotease DUBs / E3 ubiquitin ligases ubiquitinate target proteins / Factors involved in megakaryocyte development and platelet production / RCAF complex ...HDMs demethylate histones / PKMTs methylate histone lysines / Interleukin-7 signaling / Chromatin modifying enzymes / : / SUMOylation of chromatin organization proteins / Metalloprotease DUBs / E3 ubiquitin ligases ubiquitinate target proteins / Factors involved in megakaryocyte development and platelet production / RCAF complex / RMTs methylate histone arginines / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / SIRT1 negatively regulates rRNA expression / NoRC negatively regulates rRNA expression / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / polytene chromosome band / Formation of the beta-catenin:TCF transactivating complex / PRC2 methylates histones and DNA / HDACs deacetylate histones / Ub-specific processing proteases / Negative Regulation of CDH1 Gene Transcription / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / RNA Polymerase I Promoter Escape / Regulation of endogenous retroelements by KRAB-ZFP proteins / larval somatic muscle development / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Senescence-Associated Secretory Phenotype (SASP) / Transcriptional regulation by small RNAs / Estrogen-dependent gene expression / HATs acetylate histones / response to oxygen-glucose deprivation / Assembly of the ORC complex at the origin of replication / Oxidative Stress Induced Senescence / UCH proteinases / poly-ADP-D-ribose binding / polytene chromosome / positive regulation of cell growth involved in cardiac muscle cell development / NAD+-protein-serine ADP-ribosyltransferase activity / NAD DNA ADP-ribosyltransferase activity / DNA ADP-ribosylation / poly-ADP-D-ribose modification-dependent protein binding / HDR through MMEJ (alt-NHEJ) / hippocampal neuron apoptotic process / NAD+ ADP-ribosyltransferase / protein auto-ADP-ribosylation / nucleosomal DNA binding / NAD+-protein-aspartate ADP-ribosyltransferase activity / protein poly-ADP-ribosylation / NAD+-protein-glutamate ADP-ribosyltransferase activity / nuclear chromosome / NAD+-protein mono-ADP-ribosyltransferase activity / DNA repair-dependent chromatin remodeling / decidualization / 転移酵素; グリコシル基を移すもの; 五炭糖残基を移すもの / POLB-Dependent Long Patch Base Excision Repair / NAD+ poly-ADP-ribosyltransferase activity / nucleosome binding / site of DNA damage / extrinsic apoptotic signaling pathway / nucleotidyltransferase activity / base-excision repair / DNA Damage Recognition in GG-NER / Dual Incision in GG-NER / Formation of Incision Complex in GG-NER / structural constituent of chromatin / nucleosome / double-strand break repair / heterochromatin formation / nucleosome assembly / chromosome / chromatin organization / damaged DNA binding / protein heterodimerization activity / DNA repair / DNA damage response / chromatin binding / chromatin / protein-containing complex binding / nucleolus / DNA binding / nucleoplasm / nucleus / cytosol 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: 3.28 Å | |||||||||||||||||||||
データ登録者 | Kim, T.H. / Jayathilake, C. / Virk, R.K. / Gregory-Lott, E.R. | |||||||||||||||||||||
| 資金援助 | 米国, 2件
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引用 | ジャーナル: J Mol Biol / 年: 2026タイトル: High-Yield Production of Modified DNA Enables Structural Analysis of PARP2 Recognition of Nucleosomal Single-Strand Breaks. 著者: Chathuni Jayathilake / Clare E Mewhinney / Emily R Gregory-Lott / Rajbinder K Virk / Riya Nair / Junseo Yang / Eun Cho / Alexander G Day / Derek J Taylor / Tae Hun Kim / ![]() 要旨: Preparation of high-quality nucleosomal DNA substrates in milligram quantities remains a major bottleneck for mechanistic studies of chromatin-associated processes. Here, we present an optimized ...Preparation of high-quality nucleosomal DNA substrates in milligram quantities remains a major bottleneck for mechanistic studies of chromatin-associated processes. Here, we present an optimized large-scale PCR workflow that enables rapid, low-cost production of diverse nucleosomal DNAs suitable for biochemical assays and high-resolution cryo-EM. Systematic optimization of amplification conditions yields milligram quantities of homogeneous DNA that can be fluorescently or biotin-labeled and enzymatically modified to introduce site-specific single-strand breaks (SSBs) or epigenetic marks. We also engineered an improved Nt.BsmAI nickase variant (R386D) that minimizes undesired double-strand cleavage while maintaining robust nicking activity. Using nucleosomes reconstituted with these engineered DNAs, we demonstrate the versatility of this platform across EMSA, biolayer interferometry, and cryo-EM. Structural analysis reveals how the PARP2 WGR domain engages an SSB within the nucleosome and uncovers associated shifts in H2B tail conformation that facilitate access to lesions positioned near the tail. Overall, this workflow provides a robust and scalable method for generating precisely modified nucleosomal substrates, enabling quantitative and structural dissection of PARP2-mediated DNA damage recognition and the coupled histone H2B tail rearrangements that facilitate lesion accessibility in chromatin. | |||||||||||||||||||||
| 履歴 |
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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 | 9zqa.cif.gz | 767.1 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9zqa.ent.gz | 622.9 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9zqa.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
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/zq/9zqa ftp://data.pdbj.org/pub/pdb/validation_reports/zq/9zqa | HTTPS FTP |
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-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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要素
-タンパク質 , 5種, 9分子 ABCDEFGHP
| #1: タンパク質 | 分子量: 13388.727 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: His2A, H2a, His2A:CG31618, CG31618, His2A:CG33808, CG33808, His2A:CG33814, CG33814, His2A:CG33817, CG33817, His2A:CG33820, CG33820, His2A:CG33823, CG33823, His2A:CG33826, CG33826, His2A: ...遺伝子: His2A, H2a, His2A:CG31618, CG31618, His2A:CG33808, CG33808, His2A:CG33814, CG33814, His2A:CG33817, CG33817, His2A:CG33820, CG33820, His2A:CG33823, CG33823, His2A:CG33826, CG33826, His2A:CG33829, CG33829, His2A:CG33832, CG33832, His2A:CG33835, CG33835, His2A:CG33838, CG33838, His2A:CG33841, CG33841, His2A:CG33844, CG33844, His2A:CG33847, CG33847, His2A:CG33850, CG33850, His2A:CG33862, CG33862, His2A:CG33865, CG33865 発現宿主: ![]() #2: タンパク質 | 分子量: 13897.275 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: His2B, His2B:CG17949, CG17949, His2B:CG33868, CG33868, His2B:CG33870, CG33870, His2B:CG33872, CG33872, His2B:CG33874, CG33874, His2B:CG33876, CG33876, His2B:CG33878, CG33878, His2B: ...遺伝子: His2B, His2B:CG17949, CG17949, His2B:CG33868, CG33868, His2B:CG33870, CG33870, His2B:CG33872, CG33872, His2B:CG33874, CG33874, His2B:CG33876, CG33876, His2B:CG33878, CG33878, His2B:CG33880, CG33880, His2B:CG33882, CG33882, His2B:CG33884, CG33884, His2B:CG33886, CG33886, His2B:CG33888, CG33888, His2B:CG33890, CG33890, His2B:CG33892, CG33892, His2B:CG33894, CG33894, His2B:CG33896, CG33896, His2B:CG33898, CG33898, His2B:CG33900, CG33900, His2B:CG33902, CG33902, His2B:CG33904, CG33904, His2B:CG33906, CG33906, His2B:CG33908, CG33908, His2B:CG33910, CG33910 発現宿主: ![]() #3: タンパク質 | 分子量: 15405.036 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: His3, His3:CG31613, CG31613, His3:CG33803, CG33803, His3:CG33806, CG33806, His3:CG33809, CG33809, His3:CG33812, CG33812, His3:CG33815, CG33815, His3:CG33818, CG33818, His3:CG33821, ...遺伝子: His3, His3:CG31613, CG31613, His3:CG33803, CG33803, His3:CG33806, CG33806, His3:CG33809, CG33809, His3:CG33812, CG33812, His3:CG33815, CG33815, His3:CG33818, CG33818, His3:CG33821, CG33821, His3:CG33824, CG33824, His3:CG33827, CG33827, His3:CG33830, CG33830, His3:CG33833, CG33833, His3:CG33836, CG33836, His3:CG33839, CG33839, His3:CG33842, CG33842, His3:CG33845, CG33845, His3:CG33848, CG33848, His3:CG33851, CG33851, His3:CG33854, CG33854, His3:CG33857, CG33857, His3:CG33860, CG33860, His3:CG33863, CG33863, His3:CG33866, CG33866 発現宿主: ![]() #4: タンパク質 | 分子量: 11521.611 Da / 分子数: 2 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: His4, H4, His4r, H4r, CG3379, His4:CG31611, CG31611, His4:CG33869, CG33869, His4:CG33871, CG33871, His4:CG33873, CG33873, His4:CG33875, CG33875, His4:CG33877, CG33877, His4:CG33879, ...遺伝子: His4, H4, His4r, H4r, CG3379, His4:CG31611, CG31611, His4:CG33869, CG33869, His4:CG33871, CG33871, His4:CG33873, CG33873, His4:CG33875, CG33875, His4:CG33877, CG33877, His4:CG33879, CG33879, His4:CG33881, CG33881, His4:CG33883, CG33883, His4:CG33885, CG33885, His4:CG33887, CG33887, His4:CG33889, CG33889, His4:CG33891, CG33891, His4:CG33893, CG33893, His4:CG33895, CG33895, His4:CG33897, CG33897, His4:CG33899, CG33899, His4:CG33901, CG33901, His4:CG33903, CG33903, His4:CG33905, CG33905, His4:CG33907, CG33907, His4:CG33909, CG33909 発現宿主: ![]() #8: タンパク質 | | 分子量: 14325.243 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: PARP2, ADPRT2, ADPRTL2 / 発現宿主: ![]() 参照: UniProt: Q9UGN5, NAD+ ADP-ribosyltransferase, 転移酵素; グリコシル基を移すもの; 五炭糖残基を移すもの |
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-DNA鎖 , 3種, 3分子 KLM
| #5: DNA鎖 | 分子量: 21238.523 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) |
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| #6: DNA鎖 | 分子量: 39167.000 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) |
| #7: DNA鎖 | 分子量: 61197.965 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) |
-抗体 , 1種, 2分子 JI
| #9: 抗体 | 分子量: 29631.662 Da / 分子数: 2 / 由来タイプ: 組換発現 詳細: Sequence corresponds to GenBank IDs X60334 and X60341. 由来: (組換発現) ![]() ![]() |
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-詳細
| Has protein modification | Y |
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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 with an SSB at SHL -2.8 in complex with the WGR domain of human PARP2 タイプ: COMPLEX / Entity ID: all / 由来: MULTIPLE SOURCES |
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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: 7.4 |
| 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 / グリッドのタイプ: Quantifoil R2/1 |
| 急速凍結 | 凍結剤: ETHANE / 湿度: 100 % |
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電子顕微鏡撮影
| 顕微鏡 | モデル: TFS GLACIOS |
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| 電子銃 | 電子線源: FIELD EMISSION GUN / 加速電圧: 200 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): 1500 nm / 最小 デフォーカス(公称値): 500 nm |
| 撮影 | 電子線照射量: 49 e/Å2 フィルム・検出器のモデル: FEI FALCON IV (4k x 4k) |
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解析
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.28 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 51547 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||
| 精密化 | 最高解像度: 3.28 Å 立体化学のターゲット値: REAL-SPACE (WEIGHTED MAP SUM AT ATOM CENTERS) | ||||||||||||||||||||||||||||||||
| 拘束条件 |
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ムービー
コントローラー
万見について





Homo sapiens (ヒト)

米国, 2件
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FIELD EMISSION GUN