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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: 9b8s | |||||||||
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| タイトル | Human polymerase epsilon bound to PCNA and DNA in the nucleotide exchange state | |||||||||
要素 |
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キーワード | DNA Binding Protein/DNA / DNA polymerase / DNA / DNA Binding Protein-DNA complex | |||||||||
| 機能・相同性 | 機能・相同性情報DNA replication initiation / epsilon DNA polymerase complex / dinucleotide insertion or deletion binding / PCNA-p21 complex / mitotic telomere maintenance via semi-conservative replication / purine-specific mismatch base pair DNA N-glycosylase activity / nucleotide-excision repair, DNA gap filling / nuclear lamina / Polymerase switching / Processive synthesis on the lagging strand ...DNA replication initiation / epsilon DNA polymerase complex / dinucleotide insertion or deletion binding / PCNA-p21 complex / mitotic telomere maintenance via semi-conservative replication / purine-specific mismatch base pair DNA N-glycosylase activity / nucleotide-excision repair, DNA gap filling / nuclear lamina / Polymerase switching / Processive synthesis on the lagging strand / DNA replication proofreading / PCNA complex / single-stranded DNA 3'-5' DNA exonuclease activity / MutLalpha complex binding / Removal of the Flap Intermediate / Telomere C-strand (Lagging Strand) Synthesis / replisome / Mismatch repair (MMR) directed by MSH2:MSH3 (MutSbeta) / Mismatch repair (MMR) directed by MSH2:MSH6 (MutSalpha) / Transcription of E2F targets under negative control by DREAM complex / Polymerase switching on the C-strand of the telomere / mitotic DNA replication / response to L-glutamate / Processive synthesis on the C-strand of the telomere / Removal of the Flap Intermediate from the C-strand / 加水分解酵素; エステル加水分解酵素; 5'-リン酸モノエステル産生エンドデオキシリボヌクレアーゼ / response to dexamethasone / histone acetyltransferase binding / DNA synthesis involved in DNA repair / leading strand elongation / DNA polymerase processivity factor activity / G1/S-Specific Transcription / nuclear replication fork / SUMOylation of DNA replication proteins / replication fork processing / DNA repair-dependent chromatin remodeling / PCNA-Dependent Long Patch Base Excision Repair / embryonic organ development / Activation of the pre-replicative complex / response to cadmium ion / estrous cycle / mismatch repair / base-excision repair, gap-filling / cyclin-dependent protein kinase holoenzyme complex / DNA polymerase binding / translesion synthesis / epithelial cell differentiation / liver regeneration / TP53 Regulates Transcription of Genes Involved in G2 Cell Cycle Arrest / positive regulation of DNA replication / nuclear estrogen receptor binding / positive regulation of DNA repair / Translesion synthesis by REV1 / Translesion synthesis by POLK / Translesion synthesis by POLI / Gap-filling DNA repair synthesis and ligation in GG-NER / replication fork / G1/S transition of mitotic cell cycle / Termination of translesion DNA synthesis / Translesion Synthesis by POLH / receptor tyrosine kinase binding / Recognition of DNA damage by PCNA-containing replication complex / DNA-templated DNA replication / HDR through Homologous Recombination (HRR) / cellular response to hydrogen peroxide / Dual Incision in GG-NER / cellular response to UV / heart development / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / response to estradiol / mitotic cell cycle / E3 ubiquitin ligases ubiquitinate target proteins / 4 iron, 4 sulfur cluster binding / chromatin organization / DNA-directed DNA polymerase / damaged DNA binding / DNA-directed DNA polymerase activity / chromosome, telomeric region / DNA replication / nucleotide binding / centrosome / chromatin binding / chromatin / protein-containing complex binding / enzyme binding / DNA binding / extracellular exosome / nucleoplasm / zinc ion binding / identical protein binding / nucleus / plasma membrane 類似検索 - 分子機能 | |||||||||
| 生物種 | Homo sapiens (ヒト)DNA molecule (その他) | |||||||||
| 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: 5.01 Å | |||||||||
データ登録者 | Wang, F. / He, Q. / Li, H. | |||||||||
| 資金援助 | 米国, 2件
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引用 | ジャーナル: Nat Commun / 年: 2024タイトル: Structures of the human leading strand Polε-PCNA holoenzyme. 著者: Qing He / Feng Wang / Nina Y Yao / Michael E O'Donnell / Huilin Li / ![]() 要旨: In eukaryotes, the leading strand DNA is synthesized by Polε and the lagging strand by Polδ. These replicative polymerases have higher processivity when paired with the DNA clamp PCNA. While the ...In eukaryotes, the leading strand DNA is synthesized by Polε and the lagging strand by Polδ. These replicative polymerases have higher processivity when paired with the DNA clamp PCNA. While the structure of the yeast Polε catalytic domain has been determined, how Polε interacts with PCNA is unknown in any eukaryote, human or yeast. Here we report two cryo-EM structures of human Polε-PCNA-DNA complex, one in an incoming nucleotide bound state and the other in a nucleotide exchange state. The structures reveal an unexpected three-point interface between the Polε catalytic domain and PCNA, with the conserved PIP (PCNA interacting peptide)-motif, the unique P-domain, and the thumb domain each interacting with a different protomer of the PCNA trimer. We propose that the multi-point interface prevents other PIP-containing factors from recruiting to PCNA while PCNA functions with Polε. Comparison of the two states reveals that the finger domain pivots around the [4Fe-4S] cluster-containing tip of the P-domain to regulate nucleotide exchange and incoming nucleotide binding. | |||||||||
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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 | 9b8s.cif.gz | 396.9 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9b8s.ent.gz | 303.3 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9b8s.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/b8/9b8s ftp://data.pdbj.org/pub/pdb/validation_reports/b8/9b8s | HTTPS FTP |
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-関連構造データ
| 関連構造データ | ![]() 44357MC ![]() 9b8tC 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
| #1: タンパク質 | 分子量: 261753.234 Da / 分子数: 1 / 変異: D275A, E277A / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: POLE, POLE1発現宿主: Insect cell expression vector pTIE1 (その他) 参照: UniProt: Q07864, DNA-directed DNA polymerase, 加水分解酵素; エステル加水分解酵素; 5'-リン酸モノエステル産生エンドデオキシリボヌクレアーゼ | ||||||||
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| #2: タンパク質 | 分子量: 28795.752 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) Homo sapiens (ヒト) / 遺伝子: PCNA発現宿主: Insect cell expression vector pTIE1 (その他) 参照: UniProt: P12004 #3: DNA鎖 | | 分子量: 10823.965 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) DNA molecule (その他) / 発現宿主: DNA molecule (その他) #4: DNA鎖 | | 分子量: 18136.680 Da / 分子数: 1 / 由来タイプ: 組換発現 / 由来: (組換発現) DNA molecule (その他) / 発現宿主: DNA molecule (その他) #5: 化合物 | ChemComp-SF4 / | 研究の焦点であるリガンドがあるか | Y | |
-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: The DNA bound Pol epsilon and PCNA complex / タイプ: COMPLEX / Entity ID: #1-#4 / 由来: RECOMBINANT | ||||||||||||||||||||
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| 分子量 | 値: 0.45 MDa / 実験値: YES | ||||||||||||||||||||
| 由来(天然) | 生物種: Homo sapiens (ヒト) | ||||||||||||||||||||
| 由来(組換発現) | 生物種: Insect cell expression vector pTIE1 (その他) | ||||||||||||||||||||
| 緩衝液 | pH: 7.5 | ||||||||||||||||||||
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| 試料 | 濃度: 0.75 mg/ml / 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: GOLD / グリッドのサイズ: 400 divisions/in. / グリッドのタイプ: Quantifoil R1.2/1.3 | ||||||||||||||||||||
| 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: 280 K |
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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: 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 / 最大 デフォーカス(公称値): 1800 nm / 最小 デフォーカス(公称値): 1200 nm |
| 撮影 | 電子線照射量: 60 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k) |
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解析
| EMソフトウェア |
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 5.01 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 71210 / 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 | ||||||||||||||||||||||||
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万見について




Homo sapiens (ヒト)
米国, 2件
引用


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FIELD EMISSION GUN