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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: 8hqy | |||||||||
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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 | |||||||||
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![]() | STRUCTURAL PROTEIN / SSX1 / H2AK119Ub nucleosome / Synovial Sarcoma / ssBAF / reader protein | |||||||||
機能・相同性 | ![]() protein localization to CENP-A containing chromatin / 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 / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Deposition of new CENPA-containing nucleosomes at the centromere / Inhibition of DNA recombination at telomere / Meiotic synapsis ...protein localization to CENP-A containing chromatin / 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 / Recognition and association of DNA glycosylase with site containing an affected pyrimidine / Cleavage of the damaged pyrimidine / Deposition of new CENPA-containing nucleosomes at the centromere / Inhibition of DNA recombination at telomere / Meiotic synapsis / RNA Polymerase I Promoter Opening / Assembly of the ORC complex at the origin of replication / Regulation of endogenous retroelements by the Human Silencing Hub (HUSH) complex / DNA methylation / Condensation of Prophase Chromosomes / Chromatin modifications during the maternal to zygotic transition (MZT) / HCMV Late Events / SIRT1 negatively regulates rRNA expression / ERCC6 (CSB) and EHMT2 (G9a) positively regulate rRNA expression / chloroplast / PRC2 methylates histones and DNA / Regulation of endogenous retroelements by KRAB-ZFP proteins / Defective pyroptosis / Regulation of endogenous retroelements by Piwi-interacting RNAs (piRNAs) / HDACs deacetylate histones / RNA Polymerase I Promoter Escape / 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 / DNA Damage/Telomere Stress Induced Senescence / B-WICH complex positively regulates rRNA expression / Meiotic recombination / Pre-NOTCH Transcription and Translation / Metalloprotease DUBs / RMTs methylate histone arginines / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Transcriptional regulation of granulopoiesis / HCMV Early Events / structural constituent of chromatin / UCH proteinases / nucleosome / heterochromatin formation / chromatin organization / HATs acetylate histones / RUNX1 regulates transcription of genes involved in differentiation of HSCs / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / Senescence-Associated Secretory Phenotype (SASP) / small ribosomal subunit rRNA binding / Oxidative Stress Induced Senescence / Estrogen-dependent gene expression / Ub-specific processing proteases / ribosome / structural constituent of ribosome / translation / Amyloid fiber formation / protein heterodimerization activity / ribonucleoprotein complex / negative regulation of cell population proliferation / regulation of DNA-templated transcription / DNA binding / extracellular exosome / nucleus 類似検索 - 分子機能 | |||||||||
生物種 | ![]() | |||||||||
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: 3.05 Å | |||||||||
![]() | Zebin, T. / Ai, H.S. / Ziyu, X. / GuoChao, C. / Man, P. / Liu, L. | |||||||||
資金援助 | ![]()
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![]() | ![]() 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. | |||||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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PDBx/mmCIF形式 | ![]() | 328 KB | 表示 | ![]() |
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PDB形式 | ![]() | 246.2 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 34954MC ![]() 8hr1C 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 ![]() |
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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, 7分子 AEBDHFU
#1: タンパク質 | 分子量: 11401.268 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #2: タンパク質 | | 分子量: 9509.197 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #4: タンパク質 | 分子量: 10076.528 Da / 分子数: 2 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #5: タンパク質 | | 分子量: 9222.823 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() #8: タンパク質 | | 分子量: 8462.727 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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-Histone H2A type 1- ... , 2種, 2分子 CG
#3: タンパク質 | 分子量: 11740.742 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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#6: タンパク質 | 分子量: 11637.600 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
-タンパク質・ペプチド , 1種, 1分子 S
#7: タンパク質・ペプチド | 分子量: 2912.261 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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-DNA鎖 , 2種, 2分子 IJ
#9: DNA鎖 | 分子量: 41800.641 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
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#10: DNA鎖 | 分子量: 42151.840 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) ![]() ![]() ![]() |
-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: SSX1-H2AK119Ub nucleosome complex / タイプ: COMPLEX / Entity ID: #1-#4, #7-#10 / 由来: RECOMBINANT |
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分子量 | 値: 0.29 MDa / 実験値: NO |
由来(天然) | 生物種: ![]() |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 7.5 |
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: FEI TITAN KRIOS |
電子銃 | 電子線源: ![]() |
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 | 平均露光時間: 2.56 sec. / 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: NONE | ||||||||||||||||||||||||
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3次元再構成 | 解像度: 3.05 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 195091 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
拘束条件 |
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