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- EMDB-41663: Cryo-EM structure of S. cerevisiae PolE-Ctf18-8-1-DNA -

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Basic information

Entry
Database: EMDB / ID: EMD-41663
TitleCryo-EM structure of S. cerevisiae PolE-Ctf18-8-1-DNA
Map data
Sample
  • Complex: Ctf18-RFC-PCNA complex
    • Protein or peptide: Chromosome transmission fidelity protein 18
    • DNA: Primer DNA
    • DNA: Template DNA
    • Protein or peptide: DNA polymerase epsilon catalytic subunit A
    • Protein or peptide: Chromosome transmission fidelity protein 8
    • Protein or peptide: Sister chromatid cohesion protein DCC1
  • Ligand: IRON/SULFUR CLUSTER
KeywordsPol2 / Ctf18-8-1 / DNA / DNA BINDING PROTEIN-DNA complex
Function / homology
Function and homology information


maintenance of mitotic sister chromatid cohesion / gene conversion / DNA replication initiation / epsilon DNA polymerase complex / Ctf18 RFC-like complex / telomere tethering at nuclear periphery / maintenance of DNA trinucleotide repeats / SUMO binding / nucleotide-excision repair, DNA gap filling / Activation of the pre-replicative complex ...maintenance of mitotic sister chromatid cohesion / gene conversion / DNA replication initiation / epsilon DNA polymerase complex / Ctf18 RFC-like complex / telomere tethering at nuclear periphery / maintenance of DNA trinucleotide repeats / SUMO binding / nucleotide-excision repair, DNA gap filling / Activation of the pre-replicative complex / DNA replication proofreading / Termination of translesion DNA synthesis / single-stranded DNA 3'-5' DNA exonuclease activity / mitotic DNA replication checkpoint signaling / mitotic intra-S DNA damage checkpoint signaling / Hydrolases; Acting on ester bonds; Exodeoxyribonucleases producing 5'-phosphomonoesters / mitotic sister chromatid cohesion / leading strand elongation / nuclear replication fork / Dual incision in TC-NER / chromosome, centromeric region / DNA replication initiation / error-prone translesion synthesis / base-excision repair, gap-filling / replication fork / double-strand break repair via homologous recombination / 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 / double-stranded DNA binding / DNA-directed DNA polymerase / DNA-directed DNA polymerase activity / DNA replication / nucleotide binding / mRNA binding / chromatin / ATP hydrolysis activity / mitochondrion / DNA binding / zinc ion binding / ATP binding / nucleus
Similarity search - Function
Chromosome transmission fidelity protein 8 / Ctf8 / Sister chromatid cohesion protein Dcc1 / Sister chromatid cohesion protein Dcc1 / : / : / DNA polymerase epsilon catalytic subunit A, thumb domain / Zinc finger domain of DNA polymerase-epsilon / DNA polymerase epsilon, catalytic subunit A, C-terminal / DNA polymerase epsilon catalytic subunit ...Chromosome transmission fidelity protein 8 / Ctf8 / Sister chromatid cohesion protein Dcc1 / Sister chromatid cohesion protein Dcc1 / : / : / DNA polymerase epsilon catalytic subunit A, thumb domain / Zinc finger domain of DNA polymerase-epsilon / DNA polymerase epsilon, catalytic subunit A, C-terminal / DNA polymerase epsilon catalytic subunit / Domain of unknown function (DUF1744) / DUF1744 / : / DNA polymerase family B, thumb domain / DNA polymerase family B, exonuclease domain / DNA-directed DNA polymerase, family B, exonuclease domain / DNA polymerase, palm domain superfamily / DNA polymerase type-B family / DNA-directed DNA polymerase, family B / ATPase family associated with various cellular activities (AAA) / ATPase, AAA-type, core / Ribonuclease H superfamily / Ribonuclease H-like superfamily / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / DNA/RNA polymerase superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
DNA polymerase epsilon catalytic subunit A / Sister chromatid cohesion protein DCC1 / Chromosome transmission fidelity protein 8 / Chromosome transmission fidelity protein 18
Similarity search - Component
Biological speciesSaccharomyces cerevisiae (brewer's yeast) / synthetic construct (others)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.6 Å
AuthorsYuan Z / Georgescu R / O'Donnell M / Li H
Funding support United States, 3 items
OrganizationGrant numberCountry
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM131754 United States
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)GM115809 United States
Howard Hughes Medical Institute (HHMI)M.E.O. United States
CitationJournal: Science / Year: 2024
Title: Mechanism of PCNA loading by Ctf18-RFC for leading-strand DNA synthesis.
Authors: Zuanning Yuan / Roxana Georgescu / Nina Y Yao / Olga Yurieva / Michael E O'Donnell / Huilin Li /
Abstract: The proliferating cell nuclear antigen (PCNA) clamp encircles DNA to hold DNA polymerases (Pols) to DNA for processivity. The Ctf18-RFC PCNA loader, a replication factor C (RFC) variant, is specific ...The proliferating cell nuclear antigen (PCNA) clamp encircles DNA to hold DNA polymerases (Pols) to DNA for processivity. The Ctf18-RFC PCNA loader, a replication factor C (RFC) variant, is specific to the leading-strand Pol (Polε). We reveal here the underlying mechanism of Ctf18-RFC specificity to Polε using cryo-electron microscopy and biochemical studies. We found that both Ctf18-RFC and Polε contain specific structural features that direct PCNA loading onto DNA. Unlike other clamp loaders, Ctf18-RFC has a disordered ATPase associated with a diverse cellular activities (AAA+) motor that requires Polε to bind and stabilize it for efficient PCNA loading. In addition, Ctf18-RFC can pry prebound Polε off of DNA, then load PCNA onto DNA and transfer the PCNA-DNA back to Polε. These elements in both Ctf18-RFC and Polε provide specificity in loading PCNA onto DNA for Polε.
History
DepositionAug 20, 2023-
Header (metadata) releaseSep 4, 2024-
Map releaseSep 4, 2024-
UpdateOct 9, 2024-
Current statusOct 9, 2024Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_41663.png

Downloads & links

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Map

FileDownload / File: emd_41663.map.gz / Format: CCP4 / Size: 64 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
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AxesZ (Sec.)Y (Row.)X (Col.)
0.83 Å/pix.
x 256 pix.
= 211.968 Å		0.83 Å/pix.
x 256 pix.
= 211.968 Å		0.83 Å/pix.
x 256 pix.
= 211.968 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.828 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.326
Minimum - Maximum-0.5911503 - 1.40892
Average (Standard dev.)0.008571329 (±0.059680644)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions256256256
Spacing256256256
CellA=B=C: 211.968 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_41663_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_41663_half_map_2.map
Projections & Slices
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Histogram (log scale)

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Sample components

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Entire : Ctf18-RFC-PCNA complex

EntireName: Ctf18-RFC-PCNA complex
Components
  • Complex: Ctf18-RFC-PCNA complex
    • Protein or peptide: Chromosome transmission fidelity protein 18
    • DNA: Primer DNA
    • DNA: Template DNA
    • Protein or peptide: DNA polymerase epsilon catalytic subunit A
    • Protein or peptide: Chromosome transmission fidelity protein 8
    • Protein or peptide: Sister chromatid cohesion protein DCC1
  • Ligand: IRON/SULFUR CLUSTER

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Supramolecule #1: Ctf18-RFC-PCNA complex

SupramoleculeName: Ctf18-RFC-PCNA complex / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#6
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)

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Macromolecule #1: Chromosome transmission fidelity protein 18

MacromoleculeName: Chromosome transmission fidelity protein 18 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Molecular weightTheoretical: 3.171607 KDa
Recombinant expressionOrganism: Saccharomyces cerevisiae (brewer's yeast)
SequenceString:
TVKIWVKYNE GFSNAVRKNV TWNNLW

UniProtKB: Chromosome transmission fidelity protein 18

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Macromolecule #4: DNA polymerase epsilon catalytic subunit A

MacromoleculeName: DNA polymerase epsilon catalytic subunit A / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO / EC number: DNA-directed DNA polymerase
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Molecular weightTheoretical: 255.992484 KDa
Recombinant expressionOrganism: Saccharomyces cerevisiae (brewer's yeast)
SequenceString: MMFGKKKNNG GSSTARYSAG NKYNTLSNNY ALSAQQLLNA SKIDDIDSMM GFERYVPPQY NGRFDAKDID QIPGRVGWLT NMHATLVSQ ETLSSGSNGG GNSNDGERVT TNQGISGVDF YFLDEEGGSF KSTVVYDPYF FIACNDESRV NDVEELVKKY L ESCLKSLQ ...String:
MMFGKKKNNG GSSTARYSAG NKYNTLSNNY ALSAQQLLNA SKIDDIDSMM GFERYVPPQY NGRFDAKDID QIPGRVGWLT NMHATLVSQ ETLSSGSNGG GNSNDGERVT TNQGISGVDF YFLDEEGGSF KSTVVYDPYF FIACNDESRV NDVEELVKKY L ESCLKSLQ IIRKEDLTMD NHLLGLQKTL IKLSFVNSNQ LFEARKLLRP ILQDNANNNV QRNIYNVAAN GSEKVDAKHL IE DIREYDV PYHVRVSIDK DIRVGKWYKV TQQGFIEDTR KIAFADPVVM AFDIETTKPP LKFPDSAVDQ IMMISYMIDG EGF LITNRE IISEDIEDFE YTPKPEYPGF FTIFNENDEV ALLQRFFEHI RDVRPTVIST FNGDFFDWPF IHNRSKIHGL DMFD EIGFA PDAEGEYKSS YCSHMDCFRW VKRDSYLPQG SQGLKAVTQS KLGYNPIELD PELMTPYAFE KPQHLSEYSV SDAVA TYYL YMKYVHPFIF SLCTIIPLNP DETLRKGTGT LCEMLLMVQA YQHNILLPNK HTDPIERFYD GHLLESETYV GGHVES LEA GVFRSDLKNE FKIDPSAIDE LLQELPEALK FSVEVENKSS VDKVTNFEEI KNQITQKLLE LKENNIRNEL PLIYHVD VA SMYPNIMTTN RLQPDSIKAE RDCASCDFNR PGKTCARKLK WAWRGEFFPS KMDEYNMIKR ALQNETFPNK NKFSKKKV L TFDELSYADQ VIHIKKRLTE YSRKVYHRVK VSEIVEREAI VCQRENPFYV DTVKSFRDRR YEFKGLAKTW KGNLSKIDP SDKHARDEAK KMIVLYDSLQ LAHKVILNSF YGYVMRKGSR WYSMEMAGIT CLTGATIIQM ARALVERVGR PLELDTDGIW CILPKSFPE TYFFTLENGK KLYLSYPCSM LNYRVHQKFT NHQYQELKDP LNYIYETHSE NTIFFEVDGP YKAMILPSSK E EGKGIKKR YAVFNEDGSL AELKGFELKR RGELQLIKNF QSDIFKVFLE GDTLEGCYSA VASVCNRWLD VLDSHGLMLE DE DLVSLIC ENRSMSKTLK EYEGQKSTSI TTARRLGDFL GEDMVKDKGL QCKYIISSKP FNAPVTERAI PVAIFSADIP IKR SFLRRW TLDPSLEDLD IRTIIDWGYY RERLGSAIQK IITIPAALQG VSNPVPRVEH PDWLKRKIAT KEDKFKQTSL TKFF SKTKN VPTMGKIKDI EDLFEPTVEE DNAKIKIART TKKKAVSKRK RNQLTNEEDP LVLPSEIPSM DEDYVGWLNY QKIKW KIQA RDRKRRDQLF GNTNSSRERS ALGSMIRKQA ESYANSTWEV LQYKDSGEPG VLEVFVTING KVQNITFHIP KTIYMK FKS QTMPLQKIKN CLIEKSSASL PNNPKTSNPA GGQLFKITLP ESVFLEEKEN CTSIFNDENV LGVFEGTITP HQRAIMD LG ASVTFRSKAM GALGKGIQQG FEMKDLSMAE NERYLSGFSM DIGYLLHFPT SIGYEFFSLF KSWGDTITIL VLKPSNQA Q EINASSLGQI YKQMFEKKKG KIETYSYLVD IKEDINFEFV YFTDISKLYR RLSQETTKLK EERGLQFLLL LQSPFITKL LGTIRLLNQM PIVKLSLNEV LLPQLNWQPT LLKKLVNHVL SSGSWISHLI KLSQYSNIPI CNLRLDSMDY IIDVLYARKL KKENIVLWW NEKAPLPDHG GIQNDFDLNT SWIMNDSEFP KINNSGVYDN VVLDVGVDNL TVNTILTSAL INDAEGSDLV N NNMGIDDK DAVINSPSEF VHDAFSNDAL NVLRGMLKEW WDEALKENST ADLLVNSLAS WVQNPNAKLF DGLLRYHVHN LT KKALLQL VNEFSALGST IVYADRNQIL IKTNKYSPEN CYAYSQYMMK AVRTNPMFSY LDLNIKRYWD LLIWMDKFNF SGL ACIEIE EKENQDYTAV SQWQLKKFLS PIYQPEFEDW MMIILDSMLK TKQSYLKLNS GTQRPTQIVN VKKQDKEDSV ENSL NGFSH LFSKPLMKRV KKLFKNQQEF ILDPQYEADY VIPVLPGSHL NVKNPLLELV KSLCHVMLLS KSTILEIRTL RKELL KIFE LREFAKVAEF KDPSLSLVVP DFLCEYCFFI SDIDFCKAAP ESIFSCVRCH KAFNQVLLQE HLIQKLRSDI ESYLIQ DLR CSRCHKVKRD YMSAHCPCAG AWEGTLPRES IVQKLNVFKQ VAKYYGFDIL LSCIADLTI

UniProtKB: DNA polymerase epsilon catalytic subunit A

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Macromolecule #5: Chromosome transmission fidelity protein 8

MacromoleculeName: Chromosome transmission fidelity protein 8 / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Molecular weightTheoretical: 15.058493 KDa
Recombinant expressionOrganism: Saccharomyces cerevisiae (brewer's yeast)
SequenceString:
PSVDIDASQW QKLTQSREKQ TTVITPLGMM MLEIQGELEL PKDFASLARR DSPNEGRFSE QDGETLIRFG SLQIDGERAT LFVGKKQRL LGKVTKLDVP MGIMHFNSKD NKVELVDVMK YKVIFKDRPL PIM

UniProtKB: Chromosome transmission fidelity protein 8

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Macromolecule #6: Sister chromatid cohesion protein DCC1

MacromoleculeName: Sister chromatid cohesion protein DCC1 / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Saccharomyces cerevisiae (brewer's yeast)
Molecular weightTheoretical: 44.133785 KDa
Recombinant expressionOrganism: Saccharomyces cerevisiae (brewer's yeast)
SequenceString: MSINLHSAPE YDPSYKLIQL TPELLDIIQD PVQNHQLRFK SLDKDKSEVV LCSHDKTWVL KQRKHSNTVL LMREFVPEQP ITFDETLLF GLSKPYMDVV GFAKTESEFE TRETHGELNL NSVPIYNGEL DFSDKIMKRS STKVIGTLEE LLENSPCSAL E GISKWHKI ...String:
MSINLHSAPE YDPSYKLIQL TPELLDIIQD PVQNHQLRFK SLDKDKSEVV LCSHDKTWVL KQRKHSNTVL LMREFVPEQP ITFDETLLF GLSKPYMDVV GFAKTESEFE TRETHGELNL NSVPIYNGEL DFSDKIMKRS STKVIGTLEE LLENSPCSAL E GISKWHKI GGSVKDGVLC ILSQDFLFKA LHVLLMSAMA ESLDLQHLNV EDTHHAVGKD IEDEFNPYTR EIIETVLNKF AV QEQEAEN NTWRLRIPFI AQWYGIQALR KYVSGISMPI DEFLIKWKSL FPPFFPCDID IDMLRGYHFK PTDKTVQYIA KST LPMDPK ERFKVLFRLQ SQWDLEDIKP LIEELNSRGM KIDSFIMKYA RRKRLGKKTV VTSR

UniProtKB: Sister chromatid cohesion protein DCC1

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Macromolecule #2: Primer DNA

MacromoleculeName: Primer DNA / type: dna / ID: 2 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 2.737795 KDa
SequenceString:
(DT)(DG)(DT)(DT)(DG)(DC)(DT)(DG)(DC)

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Macromolecule #3: Template DNA

MacromoleculeName: Template DNA / type: dna / ID: 3 / Number of copies: 1 / Classification: DNA
Source (natural)Organism: synthetic construct (others)
Molecular weightTheoretical: 4.567998 KDa
SequenceString:
(DT)(DT)(DT)(DT)(DT)(DA)(DG)(DC)(DA)(DG) (DC)(DA)(DA)(DC)(DA)

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Macromolecule #7: IRON/SULFUR CLUSTER

MacromoleculeName: IRON/SULFUR CLUSTER / type: ligand / ID: 7 / Number of copies: 1 / Formula: SF4
Molecular weightTheoretical: 351.64 Da
Chemical component information

ChemComp-FS1:
IRON/SULFUR CLUSTER

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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: 7.4
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.5 µm / Nominal defocus min: 1.5 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

Startup modelType of model: NONE
Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.6 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 385806
Initial angle assignmentType: PROJECTION MATCHING
Final angle assignmentType: PROJECTION MATCHING

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