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- EMDB-13539: S. cerevisiae replisome-SCF(Dia2) complex bound to double-strande... -
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Basic information
Entry | Database: EMDB / ID: EMD-13539 | ||||||||||||
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Title | S. cerevisiae replisome-SCF(Dia2) complex bound to double-stranded DNA (conformation II) | ||||||||||||
![]() | Composite cryo-EM density map for the budding yeast CMG-Csm3-Tof1-Mrc1-Ctf4-PolE-SCF(Dia2) complex on double-stranded DNA (conformation II), produced using the Phenix combine_focused_maps program | ||||||||||||
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![]() | Genome stability / DNA replication / Ubiquitination / termination / replisome / cryo-EM / CMG / SCF(Dia2) / REPLICATION | ||||||||||||
Function / homology | ![]() RAVE complex / Iron uptake and transport / CBF3 complex / regulation of transcription by galactose / regulation of sulfur amino acid metabolic process / cellular response to methylmercury / establishment of sister chromatid cohesion / vacuolar proton-transporting V-type ATPase complex assembly / mitotic DNA replication termination / DNA-templated DNA replication maintenance of fidelity ...RAVE complex / Iron uptake and transport / CBF3 complex / regulation of transcription by galactose / regulation of sulfur amino acid metabolic process / cellular response to methylmercury / establishment of sister chromatid cohesion / vacuolar proton-transporting V-type ATPase complex assembly / mitotic DNA replication termination / DNA-templated DNA replication maintenance of fidelity / gene conversion / septin ring assembly / maintenance of DNA repeat elements / invasive growth in response to glucose limitation / Unwinding of DNA / Cul8-RING ubiquitin ligase complex / DNA replication initiation / replication fork arrest / meiotic chromosome segregation / epsilon DNA polymerase complex / protein-containing complex disassembly / DNA strand elongation involved in mitotic DNA replication / GINS complex / MCM core complex / Assembly of the pre-replicative complex / Switching of origins to a post-replicative state / MCM complex binding / mitotic DNA replication preinitiation complex assembly / nuclear DNA replication / premeiotic DNA replication / pre-replicative complex assembly involved in nuclear cell cycle DNA replication / SUMO binding / regulation of exit from mitosis / nucleotide-excision repair, DNA gap filling / Activation of the pre-replicative complex / DNA replication proofreading / mitotic DNA replication / kinetochore assembly / DNA replication checkpoint signaling / CMG complex / establishment of mitotic sister chromatid cohesion / single-stranded DNA 3'-5' DNA exonuclease activity / nuclear pre-replicative complex / Activation of ATR in response to replication stress / Termination of translesion DNA synthesis / DNA replication preinitiation complex / MCM complex / positive regulation of D-glucose transmembrane transport / vacuolar acidification / mitotic DNA replication checkpoint signaling / replication fork protection complex / protein neddylation / double-strand break repair via break-induced replication / single-stranded DNA helicase activity / mitotic DNA replication initiation / regulation of metabolic process / mitotic intra-S DNA damage checkpoint signaling / mitochondrial fusion / Hydrolases; Acting on ester bonds; Exodeoxyribonucleases producing 5'-phosphomonoesters / silent mating-type cassette heterochromatin formation / exit from mitosis / regulation of DNA-templated DNA replication initiation / SCF ubiquitin ligase complex / mitotic sister chromatid cohesion / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / nuclear chromosome / FBXL7 down-regulates AURKA during mitotic entry and in early mitosis / DNA strand elongation involved in DNA replication / Orc1 removal from chromatin / leading strand elongation / replication fork processing / regulation of DNA replication / nuclear replication fork / : / Antigen processing: Ubiquitination & Proteasome degradation / cullin family protein binding / DNA replication origin binding / Dual incision in TC-NER / DNA replication initiation / regulation of protein-containing complex assembly / error-prone translesion synthesis / subtelomeric heterochromatin formation / negative regulation of cytoplasmic translation / base-excision repair, gap-filling / regulation of mitotic cell cycle / forked DNA-dependent helicase activity / single-stranded 3'-5' DNA helicase activity / four-way junction helicase activity / double-stranded DNA helicase activity / endomembrane system / replication fork / meiotic cell cycle / helicase activity / transcription elongation by RNA polymerase II / base-excision repair / kinetochore / double-strand break repair via nonhomologous end joining / DNA-templated DNA replication / G1/S transition of mitotic cell cycle / heterochromatin formation Similarity search - Function | ||||||||||||
Biological species | DNA molecule (others) / ![]() ![]() | ||||||||||||
Method | single particle reconstruction / cryo EM / Resolution: 3.2 Å | ||||||||||||
![]() | Jenkyn-Bedford M / Yeeles JTP | ||||||||||||
Funding support | ![]()
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![]() | ![]() Title: A conserved mechanism for regulating replisome disassembly in eukaryotes. Authors: Michael Jenkyn-Bedford / Morgan L Jones / Yasemin Baris / Karim P M Labib / Giuseppe Cannone / Joseph T P Yeeles / Tom D Deegan / ![]() Abstract: Replisome disassembly is the final step of eukaryotic DNA replication and is triggered by ubiquitylation of the CDC45-MCM-GINS (CMG) replicative helicase. Despite being driven by evolutionarily ...Replisome disassembly is the final step of eukaryotic DNA replication and is triggered by ubiquitylation of the CDC45-MCM-GINS (CMG) replicative helicase. Despite being driven by evolutionarily diverse E3 ubiquitin ligases in different eukaryotes (SCF in budding yeast, CUL2 in metazoa), replisome disassembly is governed by a common regulatory principle, in which ubiquitylation of CMG is suppressed before replication termination, to prevent replication fork collapse. Recent evidence suggests that this suppression is mediated by replication fork DNA. However, it is unknown how SCF and CUL2 discriminate terminated from elongating replisomes, to selectively ubiquitylate CMG only after termination. Here we used cryo-electron microscopy to solve high-resolution structures of budding yeast and human replisome-E3 ligase assemblies. Our structures show that the leucine-rich repeat domains of Dia2 and LRR1 are structurally distinct, but bind to a common site on CMG, including the MCM3 and MCM5 zinc-finger domains. The LRR-MCM interaction is essential for replisome disassembly and, crucially, is occluded by the excluded DNA strand at replication forks, establishing the structural basis for the suppression of CMG ubiquitylation before termination. Our results elucidate a conserved mechanism for the regulation of replisome disassembly in eukaryotes, and reveal a previously unanticipated role for DNA in preserving replisome integrity. | ||||||||||||
History |
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Structure visualization
Movie |
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Structure viewer | EM map: ![]() ![]() ![]() |
Supplemental images |
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Downloads & links
-EMDB archive
Map data | ![]() | 168 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 50.4 KB 50.4 KB | Display Display | ![]() |
Images | ![]() | 95.4 KB | ||
Filedesc metadata | ![]() | 16.2 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Validation report
Summary document | ![]() | 501.1 KB | Display | ![]() |
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Full document | ![]() | 500.7 KB | Display | |
Data in XML | ![]() | 7.3 KB | Display | |
Data in CIF | ![]() | 8.4 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7pmnMC ![]() 7ploC ![]() 7pmkC M: atomic model generated by this map C: citing same article ( |
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Similar structure data |
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Links
EMDB pages | ![]() ![]() |
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Related items in Molecule of the Month |
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Map
File | ![]() | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Annotation | Composite cryo-EM density map for the budding yeast CMG-Csm3-Tof1-Mrc1-Ctf4-PolE-SCF(Dia2) complex on double-stranded DNA (conformation II), produced using the Phenix combine_focused_maps program | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Projections & slices | Image control
Images are generated by Spider. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Voxel size | X=Y=Z: 1.06 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Density |
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Symmetry | Space group: 1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Details | EMDB XML:
CCP4 map header:
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-Supplemental data
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Sample components
+Entire : Budding yeast replisome on double-stranded DNA engaged with SCF(D...
+Supramolecule #1: Budding yeast replisome on double-stranded DNA engaged with SCF(D...
+Supramolecule #2: DNA
+Supramolecule #3: Replisome
+Macromolecule #1: DNA replication licensing factor MCM2
+Macromolecule #2: DNA replication licensing factor MCM3
+Macromolecule #3: DNA replication licensing factor MCM4
+Macromolecule #4: Minichromosome maintenance protein 5
+Macromolecule #5: DNA replication licensing factor MCM6
+Macromolecule #6: DNA replication licensing factor MCM7
+Macromolecule #7: DNA replication complex GINS protein PSF1
+Macromolecule #8: DNA replication complex GINS protein PSF2
+Macromolecule #9: DNA replication complex GINS protein PSF3
+Macromolecule #10: DNA replication complex GINS protein SLD5
+Macromolecule #11: Cell division control protein 45,Cell division control protein 45
+Macromolecule #12: DNA polymerase alpha-binding protein
+Macromolecule #15: Suppressor of kinetochore protein 1
+Macromolecule #16: Protein DIA2
+Macromolecule #17: DNA polymerase epsilon catalytic subunit A
+Macromolecule #18: DNA polymerase epsilon subunit B
+Macromolecule #19: Topoisomerase 1-associated factor 1
+Macromolecule #20: Chromosome segregation in meiosis protein 3
+Macromolecule #13: Leading strand template DNA
+Macromolecule #14: Lagging strand template DNA
+Macromolecule #21: PHOSPHOAMINOPHOSPHONIC ACID-ADENYLATE ESTER
+Macromolecule #22: MAGNESIUM ION
+Macromolecule #23: ZINC ION
-Experimental details
-Structure determination
Method | cryo EM |
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![]() | single particle reconstruction |
Aggregation state | particle |
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Sample preparation
Buffer | pH: 7.6 |
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Grid | Model: Quantifoil R2/2 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 5 sec. / Details: 15 mA |
Vitrification | Cryogen name: ETHANE / Details: Manual plunger. |
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Electron microscopy
Microscope | FEI TITAN KRIOS |
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Specialist optics | Energy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV |
Image recording | Film or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Number real images: 12730 / Average exposure time: 4.0 sec. / Average electron dose: 38.8 e/Å2 |
Electron beam | Acceleration voltage: 300 kV / Electron source: ![]() |
Electron optics | Illumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.2 µm / Nominal defocus min: 0.4 µm / Nominal magnification: 81000 |
Sample stage | Specimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN |
Experimental equipment | ![]() Model: Titan Krios / Image courtesy: FEI Company |