+データを開く
-基本情報
登録情報 | データベース: EMDB / ID: EMD-34954 | |||||||||
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タイトル | Cryo-EM structure of SSX1 bound to the H2AK119Ub nucleosome at a resolution of 3.05 angstrom | |||||||||
マップデータ | ||||||||||
試料 |
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キーワード | SSX1 / H2AK119Ub nucleosome / Synovial Sarcoma / ssBAF / reader protein / STRUCTURAL PROTEIN (タンパク質) | |||||||||
機能・相同性 | 機能・相同性情報 protein localization to CENP-A containing chromatin / 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 / Inhibition of DNA recombination at telomere ...protein localization to CENP-A containing chromatin / 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 / Inhibition of DNA recombination at telomere / Meiotic synapsis / RNA Polymerase I Promoter Opening / Assembly of the ORC complex at the origin of replication / DNAメチル化 / Condensation of Prophase Chromosomes / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / Chromatin modifications during the maternal to zygotic transition (MZT) / SIRT1 negatively regulates rRNA expression / HCMV Late Events / innate immune response in mucosa / PRC2 methylates histones and DNA / Defective pyroptosis / HDACs deacetylate histones / RNA Polymerase I Promoter Escape / Nonhomologous End-Joining (NHEJ) / Transcriptional regulation by small RNAs / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / NoRC negatively regulates rRNA expression / B-WICH complex positively regulates rRNA expression / G2/M DNA damage checkpoint / DNA Damage/Telomere Stress Induced Senescence / Metalloprotease DUBs / RMTs methylate histone arginines / 遺伝的組換え / Pre-NOTCH Transcription and Translation / Activation of anterior HOX genes in hindbrain development during early embryogenesis / HCMV Early Events / Transcriptional regulation of granulopoiesis / structural constituent of chromatin / UCH proteinases / ヌクレオソーム / antimicrobial humoral immune response mediated by antimicrobial peptide / E3 ubiquitin ligases ubiquitinate target proteins / Recruitment and ATM-mediated phosphorylation of repair and signaling proteins at DNA double strand breaks / RUNX1 regulates transcription of genes involved in differentiation of HSCs / chromatin organization / Processing of DNA double-strand break ends / HATs acetylate histones / antibacterial humoral response / Senescence-Associated Secretory Phenotype (SASP) / Oxidative Stress Induced Senescence / killing of cells of another organism / Estrogen-dependent gene expression / defense response to Gram-negative bacterium / Ub-specific processing proteases / defense response to Gram-positive bacterium / protein heterodimerization activity / Amyloid fiber formation / negative regulation of cell population proliferation / regulation of DNA-templated transcription / DNA binding / extracellular space / extracellular exosome / 核質 / 細胞核 / 細胞質基質 類似検索 - 分子機能 | |||||||||
生物種 | Homo sapiens (ヒト) | |||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.05 Å | |||||||||
データ登録者 | Zebin T / Ai HS / Ziyu X / GuoChao C / Man P / Liu L | |||||||||
資金援助 | 中国, 2件
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引用 | ジャーナル: Nat Struct Mol Biol / 年: 2024 タイトル: Synovial sarcoma X breakpoint 1 protein uses a cryptic groove to selectively recognize H2AK119Ub nucleosomes. 著者: Zebin Tong / Huasong Ai / Ziyu Xu / Kezhang He / Guo-Chao Chu / Qiang Shi / Zhiheng Deng / Qiaomei Xue / Maoshen Sun / Yunxiang Du / Lujun Liang / Jia-Bin Li / Man Pan / Lei Liu / 要旨: The cancer-specific fusion oncoprotein SS18-SSX1 disturbs chromatin accessibility by hijacking the BAF complex from the promoters and enhancers to the Polycomb-repressed chromatin regions. This ...The cancer-specific fusion oncoprotein SS18-SSX1 disturbs chromatin accessibility by hijacking the BAF complex from the promoters and enhancers to the Polycomb-repressed chromatin regions. This process relies on the selective recognition of H2AK119Ub nucleosomes by synovial sarcoma X breakpoint 1 (SSX1). However, the mechanism underlying the selective recognition of H2AK119Ub nucleosomes by SSX1 in the absence of ubiquitin (Ub)-binding capacity remains unknown. Here we report the cryo-EM structure of SSX1 bound to H2AK119Ub nucleosomes at 3.1-Å resolution. Combined in vitro biochemical and cellular assays revealed that the Ub recognition by SSX1 is unique and depends on a cryptic basic groove formed by H3 and the Ub motif on the H2AK119 site. Moreover, this unorthodox binding mode of SSX1 induces DNA unwrapping at the entry/exit sites. Together, our results describe a unique mode of site-specific ubiquitinated nucleosome recognition that underlies the specific hijacking of the BAF complex to Polycomb regions by SS18-SSX1 in synovial sarcoma. | |||||||||
履歴 |
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-構造の表示
添付画像 |
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-ダウンロードとリンク
-EMDBアーカイブ
マップデータ | emd_34954.map.gz | 1.7 MB | EMDBマップデータ形式 | |
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ヘッダ (付随情報) | emd-34954-v30.xml emd-34954.xml | 25.9 KB 25.9 KB | 表示 表示 | EMDBヘッダ |
FSC (解像度算出) | emd_34954_fsc.xml | 9.1 KB | 表示 | FSCデータファイル |
画像 | emd_34954.png | 95.3 KB | ||
マスクデータ | emd_34954_msk_1.map | 64 MB | マスクマップ | |
Filedesc metadata | emd-34954.cif.gz | 6.5 KB | ||
その他 | emd_34954_additional_1.map.gz emd_34954_half_map_1.map.gz emd_34954_half_map_2.map.gz | 48.4 MB 48.9 MB 48.8 MB | ||
アーカイブディレクトリ | http://ftp.pdbj.org/pub/emdb/structures/EMD-34954 ftp://ftp.pdbj.org/pub/emdb/structures/EMD-34954 | HTTPS FTP |
-関連構造データ
-リンク
EMDBのページ | EMDB (EBI/PDBe) / EMDataResource |
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「今月の分子」の関連する項目 |
-マップ
ファイル | ダウンロード / ファイル: emd_34954.map.gz / 形式: CCP4 / 大きさ: 64 MB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES) | ||||||||||||||||||||
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ボクセルのサイズ | X=Y=Z: 1.074 Å | ||||||||||||||||||||
密度 |
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対称性 | 空間群: 1 | ||||||||||||||||||||
詳細 | EMDB XML:
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-添付データ
-マスク #1
ファイル | emd_34954_msk_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-追加マップ: #1
ファイル | emd_34954_additional_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #2
ファイル | emd_34954_half_map_1.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-ハーフマップ: #1
ファイル | emd_34954_half_map_2.map | ||||||||||||
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投影像・断面図 |
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密度ヒストグラム |
-試料の構成要素
+全体 : SSX1-H2AK119Ub nucleosome complex
+超分子 #1: SSX1-H2AK119Ub nucleosome complex
+分子 #1: Histone H3
+分子 #2: Histone H4 (Fragment)
+分子 #3: Histone H2A type 1-B/E
+分子 #4: Histone H2B type 1-K
+分子 #5: Histone H4
+分子 #6: Histone H2A type 1-B/E
+分子 #7: Protein SSX2
+分子 #8: Polyubiquitin-B (Fragment)
+分子 #9: DNA (137-MER)
+分子 #10: DNA (136-MER)
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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解析 | 単粒子再構成法 |
試料の集合状態 | particle |
-試料調製
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE |
-電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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電子線 | 加速電圧: 300 kV / 電子線源: FIELD EMISSION GUN |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELDBright-field microscopy / 最大 デフォーカス(公称値): 2.5 µm / 最小 デフォーカス(公称値): 1.0 µm |
撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均露光時間: 2.56 sec. / 平均電子線量: 50.0 e/Å2 |
実験機器 | モデル: Titan Krios / 画像提供: FEI Company |