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- EMDB-13537: S. cerevisiae replisome-SCF(Dia2) complex bound to double-strande... -
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Open data
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Basic information
Entry | Database: EMDB / ID: EMD-13537 | ||||||||||||
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Title | S. cerevisiae replisome-SCF(Dia2) complex bound to double-stranded DNA (conformation I) | ||||||||||||
![]() | Composite cryo-EM density map for the budding yeast CMG-Csm3-Tof1-Mrc1-Ctf4-PolE-SCF(Dia2) complex on double-stranded DNA (conformation I), produced using the Phenix combine_focused_maps progam | ||||||||||||
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![]() | Genome stability / DNA replication / Ubiquitination / termination / replisome / cryo-EM / CMG / SCF(Dia2) / REPLICATION | ||||||||||||
Function / homology | ![]() : / cell cycle / mitotic DNA replication termination / DNA-templated DNA replication maintenance of fidelity / gene conversion / Unwinding of DNA / maintenance of DNA repeat elements / invasive growth in response to glucose limitation / DNA replication initiation / replication fork arrest ...: / cell cycle / mitotic DNA replication termination / DNA-templated DNA replication maintenance of fidelity / gene conversion / Unwinding of DNA / maintenance of DNA repeat elements / invasive growth in response to glucose limitation / DNA replication initiation / replication fork arrest / meiotic chromosome segregation / protein-containing complex disassembly / epsilon DNA polymerase complex / 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 / nucleotide-excision repair, DNA gap filling / mitotic DNA replication / Activation of the pre-replicative complex / DNA replication checkpoint signaling / CMG complex / establishment of mitotic sister chromatid cohesion / nuclear pre-replicative complex / DNA replication proofreading / Termination of translesion DNA synthesis / Activation of ATR in response to replication stress / DNA replication preinitiation complex / single-stranded DNA 3'-5' DNA exonuclease activity / MCM complex / replication fork protection complex / mitotic DNA replication checkpoint signaling / double-strand break repair via break-induced replication / single-stranded DNA helicase activity / mitotic DNA replication initiation / mitotic intra-S DNA damage checkpoint signaling / silent mating-type cassette heterochromatin formation / Hydrolases; Acting on ester bonds; Exodeoxyribonucleases producing 5'-phosphomonoesters / SCF ubiquitin ligase complex / 3'-5' DNA helicase activity / mitotic sister chromatid cohesion / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / DNA strand elongation involved in DNA replication / leading strand elongation / replication fork processing / nuclear replication fork / regulation of DNA replication / cullin family protein binding / DNA replication origin binding / Dual incision in TC-NER / DNA replication initiation / error-prone translesion synthesis / subtelomeric heterochromatin formation / DNA helicase activity / base-excision repair, gap-filling / replication fork / meiotic cell cycle / helicase activity / base-excision repair / double-strand break repair via nonhomologous end joining / DNA-templated DNA replication / double-strand break repair / mitotic cell cycle / single-stranded DNA binding / 4 iron, 4 sulfur cluster binding / ubiquitin-dependent protein catabolic process / double-stranded DNA binding / DNA helicase / DNA-directed DNA polymerase / forked DNA-dependent helicase activity / single-stranded 3'-5' DNA helicase activity / four-way junction helicase activity / double-stranded DNA helicase activity / DNA-directed DNA polymerase activity / chromosome, telomeric region / DNA replication / hydrolase activity / protein ubiquitination / DNA repair / nucleotide binding / mRNA binding / chromatin binding / ATP hydrolysis activity / DNA binding / zinc ion binding / nucleoplasm / ATP binding / metal ion binding / nucleus / cytosol / cytoplasm 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 | ![]() | 162.4 MB | ![]() | |
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Header (meta data) | ![]() ![]() | 50.4 KB 50.4 KB | Display Display | ![]() |
Images | ![]() | 89.3 KB | ||
Filedesc metadata | ![]() | 16.3 KB | ||
Archive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 7pmkMC ![]() 7ploC ![]() 7pmnC 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
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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 I), produced using the Phenix combine_focused_maps progam | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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: DNA helicase
+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: E3 ubiquitin ligase complex SCF subunit
+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 |