- EMDB-10620: CryoEM structure of human CMG bound to ATPgammaS and DNA - MCM2-7... -
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基本情報
登録情報
データベース: EMDB / ID: EMD-10620
タイトル
CryoEM structure of human CMG bound to ATPgammaS and DNA - MCM2-7 C-tier
マップデータ
Human CMG helicase bound to DNA and ATPgammaS - final postprocessed map for Ctier only, moved to Ctier centre of mass
試料
複合体: Complex of human CMG bound to DNA
複合体: Human CMG helicase - MCM2-7 Ctier only
機能・相同性
機能・相同性情報
Switching of origins to a post-replicative state / Unwinding of DNA / nuclear origin of replication recognition complex / Regulation of MITF-M-dependent genes involved in DNA replication, damage repair and senescence / alpha DNA polymerase:primase complex / mitotic DNA replication / CMG complex / regulation of phosphorylation / MCM complex / double-strand break repair via break-induced replication ...Switching of origins to a post-replicative state / Unwinding of DNA / nuclear origin of replication recognition complex / Regulation of MITF-M-dependent genes involved in DNA replication, damage repair and senescence / alpha DNA polymerase:primase complex / mitotic DNA replication / CMG complex / regulation of phosphorylation / MCM complex / double-strand break repair via break-induced replication / mitotic DNA replication initiation / regulation of DNA-templated DNA replication initiation / DNA strand elongation involved in DNA replication / cochlea development / DNA replication origin binding / Activation of the pre-replicative complex / DNA replication initiation / Activation of ATR in response to replication stress / cellular response to epidermal growth factor stimulus / cellular response to interleukin-4 / Assembly of the pre-replicative complex / Orc1 removal from chromatin / cellular response to xenobiotic stimulus / nucleosome assembly / single-stranded DNA binding / DNA helicase / histone binding / forked DNA-dependent helicase activity / single-stranded 3'-5' DNA helicase activity / four-way junction helicase activity / double-stranded DNA helicase activity / chromosome, telomeric region / cell population proliferation / DNA replication / cilium / intracellular membrane-bounded organelle / apoptotic process / DNA damage response / chromatin / perinuclear region of cytoplasm / enzyme binding / ATP hydrolysis activity / DNA binding / zinc ion binding / nucleoplasm / ATP binding / identical protein binding / nucleus / membrane / cytosol / cytoplasm 類似検索 - 分子機能
DNA replication licensing factor MCM2-like, winged-helix domain / : / MCM5, C-terminal domain / DNA replication licensing factor Mcm5 / DNA replication licensing factor Mcm3 / Mini-chromosome maintenance complex protein 4 / MCM3-like, winged helix domain / DNA replication licensing factor Mcm6 / DNA replication licensing factor Mcm7 / Mcm6, C-terminal winged-helix domain ...DNA replication licensing factor MCM2-like, winged-helix domain / : / MCM5, C-terminal domain / DNA replication licensing factor Mcm5 / DNA replication licensing factor Mcm3 / Mini-chromosome maintenance complex protein 4 / MCM3-like, winged helix domain / 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 / Nucleic acid-binding, OB-fold / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
DNA replication licensing factor MCM3 / DNA replication licensing factor MCM4 / DNA replication licensing factor MCM5 / DNA replication licensing factor MCM7 / DNA replication licensing factor MCM2 / DNA replication licensing factor MCM6 類似検索 - 構成要素
ジャーナル: Nucleic Acids Res / 年: 2020 タイトル: CryoEM structures of human CMG-ATPγS-DNA and CMG-AND-1 complexes. 著者: Neil J Rzechorzek / Steven W Hardwick / Vincentius A Jatikusumo / Dimitri Y Chirgadze / Luca Pellegrini / 要旨: DNA unwinding in eukaryotic replication is performed by the Cdc45-MCM-GINS (CMG) helicase. Although the CMG architecture has been elucidated, its mechanism of DNA unwinding and replisome interactions ...DNA unwinding in eukaryotic replication is performed by the Cdc45-MCM-GINS (CMG) helicase. Although the CMG architecture has been elucidated, its mechanism of DNA unwinding and replisome interactions remain poorly understood. Here we report the cryoEM structure at 3.3 Å of human CMG bound to fork DNA and the ATP-analogue ATPγS. Eleven nucleotides of single-stranded (ss) DNA are bound within the C-tier of MCM2-7 AAA+ ATPase domains. All MCM subunits contact DNA, from MCM2 at the 5'-end to MCM5 at the 3'-end of the DNA spiral, but only MCM6, 4, 7 and 3 make a full set of interactions. DNA binding correlates with nucleotide occupancy: five MCM subunits are bound to either ATPγS or ADP, whereas the apo MCM2-5 interface remains open. We further report the cryoEM structure of human CMG bound to the replisome hub AND-1 (CMGA). The AND-1 trimer uses one β-propeller domain of its trimerisation region to dock onto the side of the helicase assembly formed by Cdc45 and GINS. In the resulting CMGA architecture, the AND-1 trimer is closely positioned to the fork DNA while its CIP (Ctf4-interacting peptide)-binding helical domains remain available to recruit partner proteins.
EMPIAR-10471 (タイトル: CryoEM structure of human CMG bound to ATPgammaS and DNA Data size: 7.7 TB Data #1: Unaligned multiframe micrographs of human CMG bound ATPgammaS and DNA [micrographs - multiframe])