- EMDB-8541: Structure of the active form of human Origin Recognition Complex ... -
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基本情報
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データベース: EMDB / ID: EMD-8541
タイトル
Structure of the active form of human Origin Recognition Complex and its ATPase motor module
マップデータ
human Origin Recognition Complex and its ATPase motor module
試料
複合体: Human ORC
機能・相同性
機能・相同性情報
polar body extrusion after meiotic divisions / CDC6 association with the ORC:origin complex / origin recognition complex / E2F-enabled inhibition of pre-replication complex formation / nuclear origin of replication recognition complex / nuclear pre-replicative complex / inner kinetochore / DNA replication preinitiation complex / neural precursor cell proliferation / mitotic DNA replication checkpoint signaling ...polar body extrusion after meiotic divisions / CDC6 association with the ORC:origin complex / origin recognition complex / E2F-enabled inhibition of pre-replication complex formation / nuclear origin of replication recognition complex / nuclear pre-replicative complex / inner kinetochore / DNA replication preinitiation complex / neural precursor cell proliferation / mitotic DNA replication checkpoint signaling / G1/S-Specific Transcription / regulation of DNA replication / DNA replication origin binding / protein polymerization / Activation of the pre-replicative complex / DNA replication initiation / glial cell proliferation / heterochromatin / Activation of ATR in response to replication stress / Assembly of the ORC complex at the origin of replication / Assembly of the pre-replicative complex / Orc1 removal from chromatin / DNA replication / chromosome, telomeric region / nuclear body / nucleotide binding / centrosome / chromatin binding / chromatin / nucleolus / negative regulation of transcription by RNA polymerase II / ATP hydrolysis activity / DNA binding / nucleoplasm / ATP binding / membrane / nucleus / metal ion binding / cytosol 類似検索 - 分子機能
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM111742
米国
National Institutes of Health/National Cancer Institute (NIH/NCI)
CA13016
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
GM45436
米国
Robertson Research Fund of Cold Spring Harbor Laboratory
米国
引用
ジャーナル: Elife / 年: 2017 タイトル: Structure of the active form of human origin recognition complex and its ATPase motor module. 著者: Ante Tocilj / Kin Fan On / Zuanning Yuan / Jingchuan Sun / Elad Elkayam / Huilin Li / Bruce Stillman / Leemor Joshua-Tor / 要旨: Binding of the Origin Recognition Complex (ORC) to origins of replication marks the first step in the initiation of replication of the genome in all eukaryotic cells. Here, we report the structure of ...Binding of the Origin Recognition Complex (ORC) to origins of replication marks the first step in the initiation of replication of the genome in all eukaryotic cells. Here, we report the structure of the active form of human ORC determined by X-ray crystallography and cryo-electron microscopy. The complex is composed of an ORC1/4/5 motor module lobe in an organization reminiscent of the DNA polymerase clamp loader complexes. A second lobe contains the ORC2/3 subunits. The complex is organized as a double-layered shallow corkscrew, with the AAA+ and AAA+-like domains forming one layer, and the winged-helix domains (WHDs) forming a top layer. CDC6 fits easily between ORC1 and ORC2, completing the ring and the DNA-binding channel, forming an additional ATP hydrolysis site. Analysis of the ATPase activity of the complex provides a basis for understanding ORC activity as well as molecular defects observed in Meier-Gorlin Syndrome mutations.