+データを開く
-基本情報
登録情報 | データベース: PDB / ID: 7uqj | ||||||
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タイトル | Cryo-EM structure of the S. cerevisiae chromatin remodeler Yta7 hexamer bound to ATPgS and histone H3 tail in state II | ||||||
要素 |
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キーワード | TRANSFERASE / AAA+ ATPase / chromatin remodeler | ||||||
機能・相同性 | 機能・相同性情報 ATP-dependent histone chaperone activity / RNA polymerase I upstream activating factor complex / sexual sporulation resulting in formation of a cellular spore / positive regulation of invasive growth in response to glucose limitation / cupric reductase (NADH) activity / global genome nucleotide-excision repair / Condensation of Prophase Chromosomes / SIRT1 negatively regulates rRNA expression / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / Assembly of the ORC complex at the origin of replication ...ATP-dependent histone chaperone activity / RNA polymerase I upstream activating factor complex / sexual sporulation resulting in formation of a cellular spore / positive regulation of invasive growth in response to glucose limitation / cupric reductase (NADH) activity / global genome nucleotide-excision repair / Condensation of Prophase Chromosomes / SIRT1 negatively regulates rRNA expression / Activated PKN1 stimulates transcription of AR (androgen receptor) regulated genes KLK2 and KLK3 / Assembly of the ORC complex at the origin of replication / CENP-A containing chromatin assembly / replication fork protection complex / Oxidative Stress Induced Senescence / nucleosome disassembly / ATP-dependent chromatin remodeler activity / positive regulation of transcription by RNA polymerase I / RNA Polymerase I Promoter Escape / nucleolar large rRNA transcription by RNA polymerase I / Estrogen-dependent gene expression / rRNA transcription / 加水分解酵素; 酸無水物に作用; リン含有酸無水物に作用 / chromosome, centromeric region / intracellular copper ion homeostasis / CENP-A containing nucleosome / aerobic respiration / transcription initiation-coupled chromatin remodeling / DNA-templated DNA replication / structural constituent of chromatin / nucleosome / nucleosome assembly / chromatin organization / chromosome / histone binding / chromatin remodeling / protein heterodimerization activity / chromatin binding / regulation of DNA-templated transcription / chromatin / negative regulation of transcription by RNA polymerase II / positive regulation of transcription by RNA polymerase II / ATP hydrolysis activity / DNA binding / ATP binding / nucleus / cytosol 類似検索 - 分子機能 | ||||||
生物種 | Saccharomyces cerevisiae (パン酵母) | ||||||
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 Å | ||||||
データ登録者 | Wang, F. / Feng, X. / Li, H. | ||||||
資金援助 | 米国, 1件
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引用 | ジャーナル: J Biol Chem / 年: 2023 タイトル: The Saccharomyces cerevisiae Yta7 ATPase hexamer contains a unique bromodomain tier that functions in nucleosome disassembly. 著者: Feng Wang / Xiang Feng / Qing He / Hua Li / Huilin Li / 要旨: The Saccharomyces cerevisiae Yta7 is a chromatin remodeler harboring a histone-interacting bromodomain (BRD) and two AAA+ modules. It is not well understood how Yta7 recognizes the histone H3 tail to ...The Saccharomyces cerevisiae Yta7 is a chromatin remodeler harboring a histone-interacting bromodomain (BRD) and two AAA+ modules. It is not well understood how Yta7 recognizes the histone H3 tail to promote nucleosome disassembly for DNA replication or RNA transcription. By cryo-EM analysis, here we show that Yta7 assembles a three-tiered hexamer with a top BRD tier, a middle AAA1 tier, and a bottom AAA2 tier. Unexpectedly, the Yta7 BRD stabilizes a four-stranded β-helix, termed BRD-interacting motif (BIM), of the largely disordered N-terminal region. The BIM motif is unique to the baker's yeast, and we show both BRD and BIM contribute to nucleosome recognition. We found that Yta7 binds both acetylated and nonacetylated H3 peptides but with a higher affinity for the unmodified peptide. This property is consistent with the absence of key residues of canonical BRDs involved in acetylated peptide recognition and the role of Yta7 in general nucleosome remodeling. Interestingly, the BRD tier exists in a spiral and a flat-ring form on top of the Yta7 AAA+ hexamer. The spiral is likely in a nucleosome-searching mode because the bottom BRD blocks the entry to the AAA+ chamber. The flat ring may be in a nucleosome disassembly state because the entry is unblocked and the H3 peptide has entered the AAA+ chamber and is stabilized by the AAA1 pore loops 1 and 2. Indeed, we show that the BRD tier is a flat ring when bound to the nucleosome. Overall, our study sheds light on the nucleosome disassembly by Yta7. | ||||||
履歴 |
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-構造の表示
構造ビューア | 分子: MolmilJmol/JSmol |
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-ダウンロードとリンク
-ダウンロード
PDBx/mmCIF形式 | 7uqj.cif.gz | 700.4 KB | 表示 | PDBx/mmCIF形式 |
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PDB形式 | pdb7uqj.ent.gz | 520.4 KB | 表示 | PDB形式 |
PDBx/mmJSON形式 | 7uqj.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 | 7uqj_validation.pdf.gz | 1.6 MB | 表示 | wwPDB検証レポート |
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文書・詳細版 | 7uqj_full_validation.pdf.gz | 1.6 MB | 表示 | |
XML形式データ | 7uqj_validation.xml.gz | 107.6 KB | 表示 | |
CIF形式データ | 7uqj_validation.cif.gz | 163.1 KB | 表示 | |
アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/uq/7uqj ftp://data.pdbj.org/pub/pdb/validation_reports/uq/7uqj | HTTPS FTP |
-関連構造データ
関連構造データ | 26696MC 7uqiC 7uqkC 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 (文献) |
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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 |
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-要素
#1: タンパク質 | 分子量: 162182.969 Da / 分子数: 6 / 由来タイプ: 組換発現 由来: (組換発現) Saccharomyces cerevisiae (パン酵母) 遺伝子: YTA7, YGR270W / プラスミド: Yeast integrative vector pBS43 発現宿主: Saccharomyces cerevisiae (strain ATCC 204508 / S288c) (パン酵母) 参照: UniProt: P40340, 加水分解酵素; 酸無水物に作用; リン含有酸無水物に作用 #2: タンパク質・ペプチド | | 分子量: 2680.181 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Saccharomyces cerevisiae (パン酵母) / 参照: UniProt: P61830 #3: 化合物 | ChemComp-ADP / | #4: 化合物 | ChemComp-AGS / #5: 化合物 | ChemComp-MG / 研究の焦点であるリガンドがあるか | 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 |
-試料調製
構成要素 | 名称: Complex of Yta7 with H3N tail / タイプ: COMPLEX 詳細: The translocation state of Histone 3 N-terminal peptide by Yta7 Entity ID: #1-#2 / 由来: RECOMBINANT | ||||||||||||||||||||||||||||||||||||||||
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分子量 | 値: 0.93 MDa / 実験値: NO | ||||||||||||||||||||||||||||||||||||||||
由来(天然) | 生物種: Saccharomyces cerevisiae (パン酵母) | ||||||||||||||||||||||||||||||||||||||||
由来(組換発現) | 生物種: Saccharomyces cerevisiae (パン酵母) / プラスミド: Yeast integrative vector pBS43 | ||||||||||||||||||||||||||||||||||||||||
緩衝液 | pH: 7.6 詳細: Solution was made fresh and detergent was added to solve preference orientation issue. | ||||||||||||||||||||||||||||||||||||||||
緩衝液成分 |
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試料 | 濃度: 10 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES 詳細: The sample was a novel chromatin remodeler and a AAA+ ATPase. | ||||||||||||||||||||||||||||||||||||||||
試料支持 | 詳細: The grids were doulbe blots / グリッドの材料: COPPER / グリッドのサイズ: 300 divisions/in. / グリッドのタイプ: Quantifoil R2/1 | ||||||||||||||||||||||||||||||||||||||||
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 281 K / 詳細: Blot 3S, blot forth 3 |
-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: 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 / 倍率(公称値): 105000 X / 最大 デフォーカス(公称値): 2000 nm / 最小 デフォーカス(公称値): 1000 nm / Cs: 2.7 mm / C2レンズ絞り径: 70 µm / アライメント法: COMA FREE |
試料ホルダ | 凍結剤: NITROGEN 試料ホルダーモデル: FEI TITAN KRIOS AUTOGRID HOLDER 最高温度: 193 K / 最低温度: 193 K |
撮影 | 電子線照射量: 65 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) 詳細: A total of 75 frames were recorded for each micrograph stack. |
-解析
EMソフトウェア |
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CTF補正 | タイプ: NONE | ||||||||||||||||||||
対称性 | 点対称性: C1 (非対称) | ||||||||||||||||||||
3次元再構成 | 解像度: 3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 431065 / 対称性のタイプ: POINT | ||||||||||||||||||||
原子モデル構築 | プロトコル: RIGID BODY FIT / 空間: REAL / Target criteria: Correlation coefficient |