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- EMDB-13495: Cryo-EM reconstruction of the S. cerevisiae replisome-SCF(Dia2) c... -

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Basic information

Entry
Database: EMDB / ID: EMD-13495
TitleCryo-EM reconstruction of the S. cerevisiae replisome-SCF(Dia2) complex, bound to dsDNA (conformation I) - full complex (unsharpened map)
Map dataCryo-EM map (refinement) for the full complex (budding yeast CMG-Csm3-Tof1-Mrc1-Ctf4-PolE-SCF(Dia2)) on double-stranded DNA. Conformation I
Sample
  • Complex: Budding yeast replisome on double-stranded DNA engaged with SCF(Dia2) (conformation I)
Function / homology
Function and homology information


cellular response to bleomycin / DNA secondary structure binding / Switching of origins to a post-replicative state / detection of abiotic stimulus / replication fork arrest / regulation of nuclear cell cycle DNA replication / Unwinding of DNA / DNA replication initiation / epsilon DNA polymerase complex / cell cycle phase transition ...cellular response to bleomycin / DNA secondary structure binding / Switching of origins to a post-replicative state / detection of abiotic stimulus / replication fork arrest / regulation of nuclear cell cycle DNA replication / Unwinding of DNA / DNA replication initiation / epsilon DNA polymerase complex / cell cycle phase transition / cellular response to cisplatin / DNA strand elongation involved in mitotic DNA replication / GINS complex / mitotic DNA replication preinitiation complex assembly / nuclear origin of replication recognition complex / cellular response to hydroxyurea / alpha DNA polymerase:primase complex / mitotic DNA replication / cullin-RING-type E3 NEDD8 transferase / cellular response to chemical stress / anaphase-promoting complex binding / NEDD8 transferase activity / CMG complex / cullin-RING ubiquitin ligase complex / DNA replication checkpoint signaling / single-stranded DNA 3'-5' DNA exonuclease activity / entrainment of circadian clock / single-stranded 3'-5' DNA helicase activity / Cul7-RING ubiquitin ligase complex / ubiquitin-dependent protein catabolic process via the C-end degron rule pathway / regulation of phosphorylation / MCM complex / DNA replication preinitiation complex / Loss of Function of FBXW7 in Cancer and NOTCH1 Signaling / target-directed miRNA degradation / elongin complex / VCB complex / replication fork protection complex / positive regulation of protein autoubiquitination / mitotic DNA replication checkpoint signaling / mitotic DNA replication initiation / protein neddylation / double-strand break repair via break-induced replication / mitotic intra-S DNA damage checkpoint signaling / NEDD8 ligase activity / positive regulation of double-strand break repair / negative regulation of response to oxidative stress / Cul5-RING ubiquitin ligase complex / Hydrolases; Acting on ester bonds; Exodeoxyribonucleases producing 5'-phosphomonoesters / regulation of DNA-templated DNA replication initiation / ubiquitin-ubiquitin ligase activity / single-stranded DNA helicase activity / Cul4A-RING E3 ubiquitin ligase complex / nucleotide-excision repair, DNA gap filling / SCF ubiquitin ligase complex / inner cell mass cell proliferation / Cul2-RING ubiquitin ligase complex / negative regulation of type I interferon production / DNA replication proofreading / Cul4B-RING E3 ubiquitin ligase complex / ubiquitin ligase complex scaffold activity / DNA strand elongation involved in DNA replication / SCF-dependent proteasomal ubiquitin-dependent protein catabolic process / Cul3-RING ubiquitin ligase complex / DNA synthesis involved in DNA repair / branching morphogenesis of an epithelial tube / cochlea development / G1/S-Specific Transcription / activation of protein kinase activity / leading strand elongation / replication fork processing / Prolactin receptor signaling / Apoptotic cleavage of cellular proteins / DNA unwinding involved in DNA replication / nuclear replication fork / 3'-5' DNA helicase activity / protein monoubiquitination / mitotic G2 DNA damage checkpoint signaling / DNA replication origin binding / Pausing and recovery of Tat-mediated HIV elongation / Tat-mediated HIV elongation arrest and recovery / cullin family protein binding / HIV elongation arrest and recovery / Pausing and recovery of HIV elongation / positive regulation of double-strand break repair via homologous recombination / Activation of the pre-replicative complex / PCNA-Dependent Long Patch Base Excision Repair / DNA replication initiation / Tat-mediated elongation of the HIV-1 transcript / Formation of HIV-1 elongation complex containing HIV-1 Tat / cellular response to interleukin-4 / embryonic organ development / protein K48-linked ubiquitination / Formation of HIV elongation complex in the absence of HIV Tat / Nuclear events stimulated by ALK signaling in cancer / error-prone translesion synthesis / Activation of ATR in response to replication stress / RNA Polymerase II Transcription Elongation / Formation of RNA Pol II elongation complex / response to UV
Similarity search - Function
DNA polymerase epsilon subunit B, N-terminal / DNA polymerases epsilon N terminal / Claspin / Timeless, C-terminal / Timeless PAB domain / Chromosome segregation in meiosis protein 3 / TIPIN/Csm3/Swi3 / Replication Fork Protection Component Swi3 / Timeless / Timeless, N-terminal ...DNA polymerase epsilon subunit B, N-terminal / DNA polymerases epsilon N terminal / Claspin / Timeless, C-terminal / Timeless PAB domain / Chromosome segregation in meiosis protein 3 / TIPIN/Csm3/Swi3 / Replication Fork Protection Component Swi3 / Timeless / Timeless, N-terminal / Timeless protein / DNA polymerase epsilon, subunit B / : / DNA polymerase alpha-binding protein Ctf4, C-terminal domain / Minichromosome loss protein Mcl1, middle region / Minichromosome loss protein, Mcl1, middle region / DNA polymerase epsilon, catalytic subunit A, C-terminal / DNA polymerase epsilon catalytic subunit / Domain of unknown function (DUF1744) / DUF1744 / 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 / Leucine rich repeat 4 / Leucine Rich repeats (2 copies) / MCM4, winged helix domain / DNA polymerase alpha/delta/epsilon, subunit B / DNA replication licensing factor Mcm5 / DNA polymerase alpha/epsilon subunit B / 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. / Zinc finger, RING-H2-type / RING-H2 zinc finger domain / MCM N-terminal domain / MCM N-terminal domain / Cullin protein neddylation 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 / Anaphase-promoting complex subunit 4, WD40 domain / Cullin, conserved site / Cullin family signature. / Elongin B / Cullin / Elongin-C / Cullin repeat-like-containing domain superfamily / Cullin protein, neddylation domain / Cullin protein neddylation domain / Anaphase-promoting complex subunit 4 WD40 domain / Cullin / Cullin, N-terminal / Cullin homology domain / Cullin homology domain superfamily / Cullin family / Cullin family profile. / DNA polymerase family B, thumb domain / HMG boxes A and B DNA-binding domains profile. / S-phase kinase-associated protein 1-like / SKP1 component, POZ domain / Skp1 family, tetramerisation domain / Found in Skp1 protein family / high mobility group / High mobility group box domain / High mobility group box domain superfamily / DNA polymerase family B / DNA polymerase family B, exonuclease domain / DNA-directed DNA polymerase, family B, exonuclease domain / DNA-directed DNA polymerase, family B, multifunctional domain / DNA polymerase, palm domain superfamily / DNA polymerase type-B family / DNA-directed DNA polymerase, family B / Leucine-rich repeat, typical subtype / Leucine-rich repeats, typical (most populated) subfamily / Leucine-rich repeat profile. / SKP1/BTB/POZ domain superfamily / Leucine-rich repeat
Similarity search - Domain/homology
Cell division control protein 45 homolog / WD repeat and HMG-box DNA-binding protein 1 / 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 polymerase epsilon subunit 2 / E3 ubiquitin-protein ligase RBX1 / DNA polymerase epsilon catalytic subunit A ...Cell division control protein 45 homolog / WD repeat and HMG-box DNA-binding protein 1 / 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 polymerase epsilon subunit 2 / E3 ubiquitin-protein ligase RBX1 / DNA polymerase epsilon catalytic subunit A / Cullin-2 / DNA replication licensing factor MCM6 / DNA replication complex GINS protein PSF1 / Elongin-C / Elongin-B / Leucine-rich repeat protein 1 / DNA replication complex GINS protein SLD5 / DNA replication complex GINS protein PSF3 / TIMELESS-interacting protein / Claspin / Protein timeless homolog / DNA replication complex GINS protein PSF2
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.9 Å
AuthorsJenkyn-Bedford M / Yeeles JTP / Deegan TD
Funding support United Kingdom, 3 items
OrganizationGrant numberCountry
Medical Research Council (MRC, United Kingdom)MC_UP_1201/12 United Kingdom
Medical Research Council (MRC, United Kingdom)MC_UU_12016/13 United Kingdom
Wellcome Trust204678/Z/16/Z United Kingdom
CitationJournal: Nature / Year: 2021
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
DepositionSep 1, 2021-
Header (metadata) releaseNov 17, 2021-
Map releaseNov 17, 2021-
UpdateJan 19, 2022-
Current statusJan 19, 2022Processing site: PDBe / Status: Released

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Structure visualization

Movie
  • Surface view with section colored by density value
  • Surface level: 0.0101
  • Imaged by UCSF Chimera
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  • Surface view colored by radius
  • Surface level: 0.0101
  • Imaged by UCSF Chimera
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Movie viewer
Structure viewerEM map:
SurfViewMolmilJmol/JSmol
Supplemental images

emd_13495.png

Downloads & links

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Map

FileDownload / File: emd_13495.map.gz / Format: CCP4 / Size: 202.8 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
AnnotationCryo-EM map (refinement) for the full complex (budding yeast CMG-Csm3-Tof1-Mrc1-Ctf4-PolE-SCF(Dia2)) on double-stranded DNA. Conformation I
Voxel sizeX=Y=Z: 1.06 Å
Density
Contour LevelBy AUTHOR: 0.0101 / Movie #1: 0.0101
Minimum - Maximum-0.02077821 - 0.050243456
Average (Standard dev.)-0.00047043117 (±0.0019856768)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions376376376
Spacing376376376
CellA=B=C: 398.55997 Å
α=β=γ: 90.0 °

CCP4 map header:

modeImage stored as Reals
Å/pix. X/Y/Z1.061.061.06
M x/y/z376376376
origin x/y/z0.0000.0000.000
length x/y/z398.560398.560398.560
α/β/γ90.00090.00090.000
start NX/NY/NZ000
NX/NY/NZ440440440
MAP C/R/S123
start NC/NR/NS000
NC/NR/NS376376376
D min/max/mean-0.0210.050-0.000

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Supplemental data

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Sample components

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Entire : Budding yeast replisome on double-stranded DNA engaged with SCF(D...

EntireName: Budding yeast replisome on double-stranded DNA engaged with SCF(Dia2) (conformation I)
Components
  • Complex: Budding yeast replisome on double-stranded DNA engaged with SCF(Dia2) (conformation I)

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Supramolecule #1: Budding yeast replisome on double-stranded DNA engaged with SCF(D...

SupramoleculeName: Budding yeast replisome on double-stranded DNA engaged with SCF(Dia2) (conformation I)
type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#22
Details: Complex reconstituted in vitro from purified proteins and DNA
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Recombinant expressionOrganism: Saccharomyces cerevisiae (brewer's yeast)

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 7.6
GridModel: Quantifoil R2/2 / Material: COPPER / Mesh: 400 / Support film - Material: CARBON / Support film - topology: CONTINUOUS / Pretreatment - Type: GLOW DISCHARGE / Details: 15 mA
VitrificationCryogen name: ETHANE / Details: Manual plunger.

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Specialist opticsEnergy filter - Name: GIF Bioquantum / Energy filter - Slit width: 20 eV
Image recordingFilm 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 beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.2 µm / Nominal defocus min: 0.4 µm / Nominal magnification: 81000
Sample stageSpecimen holder model: FEI TITAN KRIOS AUTOGRID HOLDER / Cooling holder cryogen: NITROGEN
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Particle selectionNumber selected: 2160000
CTF correctionSoftware - Name: RELION (ver. 3)
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.9 Å / Resolution method: FSC 0.143 CUT-OFF / Software - Name: RELION (ver. 3) / Number images used: 102637
Initial angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: RELION (ver. 3)
Final angle assignmentType: ANGULAR RECONSTITUTION / Software - Name: RELION (ver. 3)

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