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データを開く
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基本情報
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タイトル | Cryo-EM 3D map of the yeast Rad24-RFC loader bound to DNA and the open 9-1-1 clamp | ||||||||||||
![]() | Cryo-EM map of the yeast Rad24-RFC loader bound to the 911 clamp and DNA in an open state | ||||||||||||
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![]() | DNA damage repair / Rad24-RFC / 9-1-1 clamp / DNA clamp / alternative clamp loader / DNA damage signaling / DNA BINDING PROTEIN-DNA complex | ||||||||||||
機能・相同性 | ![]() checkpoint clamp complex / meiotic recombination checkpoint signaling / : / Rad17 RFC-like complex / Gap-filling DNA repair synthesis and ligation in GG-NER / Elg1 RFC-like complex / DNA replication factor C complex / Ctf18 RFC-like complex / Polymerase switching / nuclease activity ...checkpoint clamp complex / meiotic recombination checkpoint signaling / : / Rad17 RFC-like complex / Gap-filling DNA repair synthesis and ligation in GG-NER / Elg1 RFC-like complex / DNA replication factor C complex / Ctf18 RFC-like complex / Polymerase switching / nuclease activity / Translesion synthesis by REV1 / Translesion synthesis by POLK / Translesion synthesis by POLI / Translesion Synthesis by POLH / DNA replication checkpoint signaling / DNA clamp loader activity / Termination of translesion DNA synthesis / Activation of ATR in response to replication stress / mitotic DNA replication checkpoint signaling / reciprocal meiotic recombination / mitotic intra-S DNA damage checkpoint signaling / recombinational repair / sister chromatid cohesion / mitotic sister chromatid cohesion / leading strand elongation / mitotic G2 DNA damage checkpoint signaling / Gap-filling DNA repair synthesis and ligation in TC-NER / protein kinase activator activity / Dual incision in TC-NER / mismatch repair / mitotic G1 DNA damage checkpoint signaling / DNA damage checkpoint signaling / condensed nuclear chromosome / meiotic cell cycle / cellular response to ionizing radiation / nucleotide-excision repair / DNA-templated DNA replication / double-strand break repair / double-stranded DNA binding / damaged DNA binding / DNA repair / chromatin binding / ATP hydrolysis activity / DNA binding / ATP binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能 | ||||||||||||
生物種 | synthetic construct (人工物) / ![]() ![]() | ||||||||||||
手法 | 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 3.23 Å | ||||||||||||
![]() | Zheng F / Georgescu R | ||||||||||||
資金援助 | ![]()
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![]() | ![]() タイトル: DNA is loaded through the 9-1-1 DNA checkpoint clamp in the opposite direction of the PCNA clamp. 著者: Fengwei Zheng / Roxana E Georgescu / Nina Y Yao / Michael E O'Donnell / Huilin Li / ![]() 要旨: The 9-1-1 DNA checkpoint clamp is loaded onto 5'-recessed DNA to activate the DNA damage checkpoint that arrests the cell cycle. The 9-1-1 clamp is a heterotrimeric ring that is loaded in ...The 9-1-1 DNA checkpoint clamp is loaded onto 5'-recessed DNA to activate the DNA damage checkpoint that arrests the cell cycle. The 9-1-1 clamp is a heterotrimeric ring that is loaded in Saccharomyces cerevisiae by Rad24-RFC (hRAD17-RFC), an alternate clamp loader in which Rad24 replaces Rfc1 in the RFC1-5 clamp loader of proliferating cell nuclear antigen (PCNA). The 9-1-1 clamp loading mechanism has been a mystery, because, unlike RFC, which loads PCNA onto a 3'-recessed junction, Rad24-RFC loads the 9-1-1 ring onto a 5'-recessed DNA junction. Here we report two cryo-EM structures of Rad24-RFC-DNA with a closed or 27-Å open 9-1-1 clamp. The structures reveal a completely unexpected mechanism by which a clamp can be loaded onto DNA. Unlike RFC, which encircles DNA, Rad24 binds 5'-DNA on its surface, not inside the loader, and threads the 3' ssDNA overhang into the 9-1-1 clamp from above the ring. | ||||||||||||
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構造の表示
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ダウンロードとリンク
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マップデータ | ![]() | 226.3 MB | ![]() | |
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ヘッダ (付随情報) | ![]() ![]() | 28.3 KB 28.3 KB | 表示 表示 | ![]() |
画像 | ![]() | 85.8 KB | ||
Filedesc metadata | ![]() | 9 KB | ||
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
関連構造データ | ![]() 7sh2MC ![]() 7sgzC C: 同じ文献を引用 ( M: このマップから作成された原子モデル |
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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
EMDBのページ | ![]() ![]() |
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「今月の分子」の関連する項目 |
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マップ
ファイル | ![]() | ||||||||||||||||||||||||||||||||||||
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注釈 | Cryo-EM map of the yeast Rad24-RFC loader bound to the 911 clamp and DNA in an open state | ||||||||||||||||||||||||||||||||||||
投影像・断面図 | 画像のコントロール
画像は Spider により作成 | ||||||||||||||||||||||||||||||||||||
ボクセルのサイズ | X=Y=Z: 0.828 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
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試料の構成要素
+全体 : Rad24-RFC-911 clamp-DNA
+超分子 #1: Rad24-RFC-911 clamp-DNA
+超分子 #2: dsDNA
+超分子 #3: Proteins
+分子 #1: Checkpoint protein RAD24
+分子 #2: Replication factor C subunit 4
+分子 #3: Replication factor C subunit 3
+分子 #4: Replication factor C subunit 2
+分子 #5: Replication factor C subunit 5
+分子 #6: Mitosis Entry Checkpoint protein MEC3
+分子 #7: DNA damage checkpoint control protein RAD17
+分子 #8: DNA damage checkpoint protein DDC1
+分子 #9: Watson strand
+分子 #10: Crick strand
+分子 #11: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
+分子 #12: MAGNESIUM ION
+分子 #13: ADENOSINE-5'-DIPHOSPHATE
-実験情報
-構造解析
手法 | クライオ電子顕微鏡法 |
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![]() | 単粒子再構成法 |
試料の集合状態 | particle |
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試料調製
緩衝液 | pH: 7.5 |
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凍結 | 凍結剤: ETHANE |
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電子顕微鏡法
顕微鏡 | FEI TITAN KRIOS |
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撮影 | フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 65.0 e/Å2 |
電子線 | 加速電圧: 300 kV / 電子線源: ![]() |
電子光学系 | 照射モード: FLOOD BEAM / 撮影モード: BRIGHT FIELD |
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |