- EMDB-5381: Cdc6-induced Conformational Changes in ORC Bound To Origin DNA Re... -
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基本情報
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データベース: EMDB / ID: EMD-5381
タイトル
Cdc6-induced Conformational Changes in ORC Bound To Origin DNA Revealed by Cryo-Electron Microscopy. This map may be mirrored (based on comparison to EMD-5625).
マップデータ
cryoEM structure of Yeast Origin Recognition complex with dsDNA and Cdc6. This map may be mirrored (based on comparison to EMD-5625).
試料
試料: Yeast Origin Recognition Complex with dsDNA and Cdc6
タンパク質・ペプチド: Yeast Origin Recognition Complex and Cdc6
ジャーナル: Structure / 年: 2012 タイトル: Cdc6-induced conformational changes in ORC bound to origin DNA revealed by cryo-electron microscopy. 著者: Jingchuan Sun / Hironori Kawakami / Juergen Zech / Christian Speck / Bruce Stillman / Huilin Li / 要旨: The eukaryotic origin recognition complex (ORC) interacts with and remodels origins of DNA replication prior to initiation in S phase. Here, we report a single-particle cryo-EM-derived structure of ...The eukaryotic origin recognition complex (ORC) interacts with and remodels origins of DNA replication prior to initiation in S phase. Here, we report a single-particle cryo-EM-derived structure of the supramolecular assembly comprising Saccharomyces cerevisiae ORC, the replication initiation factor Cdc6, and double-stranded ARS1 origin DNA in the presence of ATPγS. The six subunits of ORC are arranged as Orc1:Orc4:Orc5:Orc2:Orc3, with Orc6 binding to Orc2. Cdc6 binding changes the conformation of ORC, in particular reorienting the Orc1 N-terminal BAH domain. Segmentation of the 3D map of ORC-Cdc6 on DNA and docking with the crystal structure of the homologous archaeal Orc1/Cdc6 protein suggest an origin DNA binding model in which the DNA tracks along the interior surface of the crescent-like ORC. Thus, ORC bends and wraps the DNA. This model is consistent with the observation that binding of a single Cdc6 extends the ORC footprint on origin DNA from both ends.
全体 : Yeast Origin Recognition Complex with dsDNA and Cdc6
全体
名称: Yeast Origin Recognition Complex with dsDNA and Cdc6
要素
試料: Yeast Origin Recognition Complex with dsDNA and Cdc6
タンパク質・ペプチド: Yeast Origin Recognition Complex and Cdc6
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超分子 #1000: Yeast Origin Recognition Complex with dsDNA and Cdc6
超分子
名称: Yeast Origin Recognition Complex with dsDNA and Cdc6 タイプ: sample / ID: 1000 詳細: ORC and Cdc6 are mixed with 66 bp DNA with ARS1 in ATPrS Number unique components: 8