- EMDB-17204: Cryo-EM structure of CMG helicase bound to TIM-1/TIPN-1 and homod... -
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基本情報
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データベース: EMDB / ID: EMD-17204
タイトル
Cryo-EM structure of CMG helicase bound to TIM-1/TIPN-1 and homodimeric DNSN-1 on fork DNA (Caenorhabditis elegans)
マップデータ
Cryo-EM density map of the Caenorhabditis elegans complex CMG helicase/TIM-1/TIPN-1/DNSN-1 dimer on fork DNA
試料
複合体: Complex of CMG helicase bound to TIM-1/TIPN-1 and homodimeric DNSN-1 on fork DNA (Caenorhabditis elegans)
タンパク質・ペプチド: x 14種
DNA: x 2種
リガンド: x 3種
キーワード
DNA Replication / DNA Replication Initiation / Replisome / DONSON / Replication
機能・相同性
機能・相同性情報
MCM complex assembly / negative regulation of DNA helicase activity / Unwinding of DNA / Assembly of the pre-replicative complex / Orc1 removal from chromatin / Activation of the pre-replicative complex / Switching of origins to a post-replicative state / regulation of sister chromatid cohesion / : / replication fork arrest ...MCM complex assembly / negative regulation of DNA helicase activity / Unwinding of DNA / Assembly of the pre-replicative complex / Orc1 removal from chromatin / Activation of the pre-replicative complex / Switching of origins to a post-replicative state / regulation of sister chromatid cohesion / : / replication fork arrest / gonad development / cell cycle phase transition / GINS complex / DNA strand elongation involved in mitotic DNA replication / nuclear DNA replication / mitotic DNA replication preinitiation complex assembly / meiotic sister chromatid cohesion / mitotic DNA replication / DNA replication checkpoint signaling / MCM complex / DNA replication preinitiation complex / pronucleus / replication fork protection complex / mitotic DNA replication initiation / double-strand break repair via break-induced replication / locomotion / mitotic intra-S DNA damage checkpoint signaling / embryo development ending in birth or egg hatching / regulation of DNA-templated DNA replication initiation / DNA duplex unwinding / mitotic sister chromatid cohesion / DNA strand elongation involved in DNA replication / replication fork processing / DNA unwinding involved in DNA replication / mitotic sister chromatid segregation / DNA replication origin binding / DNA replication initiation / condensed chromosome / DNA helicase activity / helicase activity / meiotic cell cycle / DNA-templated DNA replication / chromosome / nervous system development / single-stranded DNA binding / DNA replication / DNA helicase / hydrolase activity / cell cycle / cell division / DNA repair / chromatin binding / positive regulation of cell population proliferation / chromatin / ATP hydrolysis activity / DNA binding / ATP binding / nucleus / metal ion binding / cytoplasm / cytosol 類似検索 - 分子機能
Donson / Chromosome segregation in meiosis protein 3 / TIPIN/Csm3/Swi3 / Replication Fork Protection Component Swi3 / Timeless / Timeless, N-terminal / Timeless protein / CDC45 family / DNA replication complex GINS protein Psf2 / CDC45-like protein ...Donson / Chromosome segregation in meiosis protein 3 / TIPIN/Csm3/Swi3 / Replication Fork Protection Component Swi3 / Timeless / Timeless, N-terminal / Timeless protein / CDC45 family / DNA replication complex GINS protein Psf2 / CDC45-like protein / GINS complex, subunit Psf1 / GINS complex, subunit Psf3 / GINS complex, subunit Psf3 superfamily / DNA replication complex GINS protein SLD5, C-terminal / GINS, helical bundle-like domain superfamily / GINS complex protein Sld5, alpha-helical domain / DNA replication complex GINS protein SLD5 C-terminus / GINS complex subunit Sld5 / GINS subunit, domain A / GINS complex protein helical bundle domain / DNA replication licensing factor Mcm5 / DNA replication licensing factor Mcm3 / Mini-chromosome maintenance complex protein 4 / DNA replication licensing factor Mcm6 / DNA replication licensing factor Mcm7 / Mcm6, C-terminal winged-helix domain / MCM6 C-terminal winged-helix domain / DNA replication licensing factor Mcm2 / Mini-chromosome maintenance protein 2 / Mini-chromosome maintenance, conserved site / MCM family signature. / MCM N-terminal domain / MCM N-terminal domain / MCM OB domain / MCM OB domain / Mini-chromosome maintenance protein / MCM, AAA-lid domain / MCM P-loop domain / MCM AAA-lid domain / MCM family domain profile. / minichromosome maintenance proteins / MCM domain / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / Nucleic acid-binding, OB-fold / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
Protein timeless homolog / Downstream Neighbor of SoN homolog / DNA replication licensing factor MCM7 / Probable DNA replication complex GINS protein PSF2 / DNA replication licensing factor mcm-6 / DNA replication licensing factor mcm-5 / Probable DNA replication complex GINS protein PSF1 / Cell division control protein 45 homolog / DNA replication licensing factor mcm-4 / DNA replication complex GINS protein PSF3 ...Protein timeless homolog / Downstream Neighbor of SoN homolog / DNA replication licensing factor MCM7 / Probable DNA replication complex GINS protein PSF2 / DNA replication licensing factor mcm-6 / DNA replication licensing factor mcm-5 / Probable DNA replication complex GINS protein PSF1 / Cell division control protein 45 homolog / DNA replication licensing factor mcm-4 / DNA replication complex GINS protein PSF3 / Protein TIPIN homolog / DNA replication complex GINS protein SLD5 / DNA replication licensing factor MCM3 / DNA replication licensing factor MCM2 類似検索 - 構成要素
ジャーナル: Science / 年: 2023 タイトル: DNSN-1 recruits GINS for CMG helicase assembly during DNA replication initiation in . 著者: Yisui Xia / Remi Sonneville / Michael Jenkyn-Bedford / Liqin Ji / Constance Alabert / Ye Hong / Joseph T P Yeeles / Karim P M Labib / 要旨: Assembly of the CMG (CDC-45-MCM-2-7-GINS) helicase is the key regulated step during eukaryotic DNA replication initiation. Until now, it was unclear whether metazoa require additional factors that ...Assembly of the CMG (CDC-45-MCM-2-7-GINS) helicase is the key regulated step during eukaryotic DNA replication initiation. Until now, it was unclear whether metazoa require additional factors that are not present in yeast. In this work, we show that DNSN-1, the ortholog of human DONSON, functions during helicase assembly in a complex with MUS-101/TOPBP1. DNSN-1 is required to recruit the GINS complex to chromatin, and a cryo-electron microscopy structure indicates that DNSN-1 positions GINS on the MCM-2-7 helicase motor (comprising the six MCM-2 to MCM-7 proteins), by direct binding of DNSN-1 to GINS and MCM-3, using interfaces that we show are important for initiation and essential for viability. These findings identify DNSN-1 as a missing link in our understanding of DNA replication initiation, suggesting that initiation defects underlie the human disease syndrome that results from DONSON mutations.