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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: 9mj5 | ||||||||||||||||||
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| タイトル | Catalytic domain of human DNA polymerase alpha in complex with DNA and RPA | ||||||||||||||||||
要素 |
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キーワード | Replication/DNA/RNA / DNA replication / Replication-DNA-RNA complex | ||||||||||||||||||
| 機能・相同性 | 機能・相同性情報protein localization to chromosome / DNA replication factor A complex / DNA replication initiation / Telomere C-strand synthesis initiation / Inhibition of replication initiation of damaged DNA by RB1/E2F1 / regulation of type I interferon production / alpha DNA polymerase:primase complex / Polymerase switching / Processive synthesis on the lagging strand / lateral element ...protein localization to chromosome / DNA replication factor A complex / DNA replication initiation / Telomere C-strand synthesis initiation / Inhibition of replication initiation of damaged DNA by RB1/E2F1 / regulation of type I interferon production / alpha DNA polymerase:primase complex / Polymerase switching / Processive synthesis on the lagging strand / lateral element / regulation of DNA damage checkpoint / single-stranded telomeric DNA binding / G-rich strand telomeric DNA binding / lagging strand elongation / Removal of the Flap Intermediate / chromatin-protein adaptor activity / protein localization to site of double-strand break / Polymerase switching on the C-strand of the telomere / Mismatch repair (MMR) directed by MSH2:MSH3 (MutSbeta) / Mismatch repair (MMR) directed by MSH2:MSH6 (MutSalpha) / mitotic DNA replication initiation / DNA replication, synthesis of primer / Removal of the Flap Intermediate from the C-strand / HDR through Single Strand Annealing (SSA) / regulation of double-strand break repair via homologous recombination / DNA strand elongation involved in DNA replication / DNA synthesis involved in DNA repair / telomeric DNA binding / Impaired BRCA2 binding to RAD51 / leading strand elongation / G1/S-Specific Transcription / hemopoiesis / Presynaptic phase of homologous DNA pairing and strand exchange / site of DNA damage / DNA replication origin binding / PCNA-Dependent Long Patch Base Excision Repair / DNA replication initiation / Regulation of HSF1-mediated heat shock response / Activation of the pre-replicative complex / HSF1 activation / telomere maintenance via telomerase / mismatch repair / Activation of ATR in response to replication stress / SUMOylation of DNA damage response and repair proteins / mitotic G1 DNA damage checkpoint signaling / homeostasis of number of cells within a tissue / telomere maintenance / regulation of mitotic cell cycle / Translesion synthesis by REV1 / Translesion synthesis by POLK / Translesion synthesis by POLI / Gap-filling DNA repair synthesis and ligation in GG-NER / Defective pyroptosis / meiotic cell cycle / male germ cell nucleus / nucleotide-excision repair / Fanconi Anemia Pathway / Termination of translesion DNA synthesis / Recognition of DNA damage by PCNA-containing replication complex / Translesion Synthesis by POLH / double-strand break repair via homologous recombination / base-excision repair / PML body / G2/M DNA damage checkpoint / HDR through Homologous Recombination (HRR) / double-strand break repair via nonhomologous end joining / Dual Incision in GG-NER / Meiotic recombination / DNA-templated DNA replication / Formation of Incision Complex in GG-NER / nuclear matrix / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / nuclear envelope / single-stranded DNA binding / regulation of cell population proliferation / site of double-strand break / Processing of DNA double-strand break ends / protein phosphatase binding / DNA recombination / Regulation of TP53 Activity through Phosphorylation / in utero embryonic development / DNA-directed DNA polymerase / damaged DNA binding / DNA-directed DNA polymerase activity / chromosome, telomeric region / DNA replication / nuclear body / DNA repair / nucleotide binding / positive regulation of cell population proliferation / DNA damage response / ubiquitin protein ligase binding / chromatin binding / protein kinase binding / chromatin / nucleolus / enzyme binding / DNA binding / zinc ion binding 類似検索 - 分子機能 | ||||||||||||||||||
| 生物種 | Homo sapiens (ヒト) | ||||||||||||||||||
| 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: 3.5 Å | ||||||||||||||||||
データ登録者 | Baranovskiy, A.G. / Morstadt, L.M. / Romero, E.E. / Babayeva, N.D. / Tahirov, T.H. | ||||||||||||||||||
| 資金援助 | 米国, 1件
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引用 | ジャーナル: Nucleic Acids Res / 年: 2025タイトル: The human primosome requires replication protein A when copying DNA with inverted repeats. 著者: Andrey G Baranovskiy / Lucia M Morstadt / Eduardo E Romero / Nigar D Babayeva / Tahir H Tahirov / ![]() 要旨: The human primosome, a four-subunit complex of primase and DNA polymerase alpha (Polα), initiates DNA synthesis on both chromosome strands by generating chimeric RNA-DNA primers for loading DNA ...The human primosome, a four-subunit complex of primase and DNA polymerase alpha (Polα), initiates DNA synthesis on both chromosome strands by generating chimeric RNA-DNA primers for loading DNA polymerases delta and epsilon (Polϵ). Replication protein A (RPA) tightly binds to single-stranded DNA strands, protecting them from nucleolytic digestion and unauthorized transactions. We report here that RPA plays a critical role for the human primosome during DNA synthesis across inverted repeats prone to hairpin formation. On other alternatively structured DNA, forming a G-quadruplex, RPA does not assist primosome. A stimulatory effect of RPA on DNA synthesis across hairpins was also observed for the catalytic domain of Polα but not of Polϵ. The winged helix-turn-helix domain of RPA is essential for an efficient hairpin bypass and increases RPA-Polα cooperativity on the primed DNA template. Cryo-EM studies revealed that this domain is mainly responsible for the interaction between RPA and Polα. The flexible mode of RPA-Polα interaction during DNA synthesis implies the mechanism of template handover between them when the hairpin formation should be avoided. This work provides insight into a cooperative action of RPA and primosome on DNA, which is critical for DNA synthesis across inverted repeats. | ||||||||||||||||||
| 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 | 9mj5.cif.gz | 284.7 KB | 表示 | PDBx/mmCIF形式 |
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| PDB形式 | pdb9mj5.ent.gz | 217.5 KB | 表示 | PDB形式 |
| PDBx/mmJSON形式 | 9mj5.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 | 9mj5_validation.pdf.gz | 917.6 KB | 表示 | wwPDB検証レポート |
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| 文書・詳細版 | 9mj5_full_validation.pdf.gz | 929.3 KB | 表示 | |
| XML形式データ | 9mj5_validation.xml.gz | 41.2 KB | 表示 | |
| CIF形式データ | 9mj5_validation.cif.gz | 65.3 KB | 表示 | |
| アーカイブディレクトリ | https://data.pdbj.org/pub/pdb/validation_reports/mj/9mj5 ftp://data.pdbj.org/pub/pdb/validation_reports/mj/9mj5 | HTTPS FTP |
-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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| 1 |
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要素
-Replication protein A ... , 3種, 3分子 ABC
| #1: タンパク質 | 分子量: 13583.714 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: RPA3, REPA3, RPA14 / 発現宿主: ![]() |
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| #2: タンパク質 | 分子量: 25931.359 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: RPA2, REPA2, RPA32, RPA34 / 発現宿主: ![]() |
| #3: タンパク質 | 分子量: 21031.748 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: RPA1, REPA1, RPA70 / 発現宿主: ![]() |
-DNA/RNAハイブリッド / タンパク質 / DNA鎖 , 3種, 3分子 PST
| #4: DNA/RNAハイブリッド | 分子量: 3505.170 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) |
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| #5: タンパク質 | 分子量: 103957.078 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: POLA1, POLA発現宿主: ![]() 参照: UniProt: P09884, DNA-directed DNA polymerase |
| #6: DNA鎖 | 分子量: 10764.963 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) Homo sapiens (ヒト) |
-非ポリマー , 3種, 3分子 




| #7: 化合物 | ChemComp-ZN / |
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| #8: 化合物 | ChemComp-MG / |
| #9: 化合物 | ChemComp-DCP / |
-詳細
| 研究の焦点であるリガンドがあるか | N |
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| Has protein modification | N |
-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: Ternary complex of DNA polymerase alpha with DNA and replication protein A タイプ: COMPLEX / Entity ID: #1-#6 / 由来: RECOMBINANT |
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| 分子量 | 実験値: NO |
| 由来(天然) | 生物種: Homo sapiens (ヒト) |
| 由来(組換発現) | 生物種: ![]() |
| 緩衝液 | pH: 7.7 |
| 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
| 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): 2400 nm / 最小 デフォーカス(公称値): 800 nm |
| 撮影 | 電子線照射量: 60 e/Å2 フィルム・検出器のモデル: TFS FALCON 4i (4k x 4k) |
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解析
| EMソフトウェア | 名称: PHENIX / バージョン: 1.21.2_5419: / カテゴリ: モデル精密化 | ||||||||||||||||||||||||
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| CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||
| 3次元再構成 | 解像度: 3.5 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 18529 / 対称性のタイプ: POINT | ||||||||||||||||||||||||
| 拘束条件 |
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万見について




Homo sapiens (ヒト)
米国, 1件
引用



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FIELD EMISSION GUN