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- PDB-9b8t: Human polymerase epsilon bound to PCNA and DNA in the nucleotide ... -

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Basic information

Entry
Database: PDB / ID: 9b8t
TitleHuman polymerase epsilon bound to PCNA and DNA in the nucleotide bound state
Components
  • DNA polymerase epsilon catalytic subunit
  • Primer DNA
  • Proliferating cell nuclear antigen
  • Template DNA
KeywordsDNA Binding Protein/DNA / DNA polymerase / DNA / DNA Binding Protein-DNA complex
Function / homology
Function and homology information


positive regulation of deoxyribonuclease activity / dinucleotide insertion or deletion binding / epsilon DNA polymerase complex / PCNA-p21 complex / mitotic telomere maintenance via semi-conservative replication / purine-specific mismatch base pair DNA N-glycosylase activity / MutLalpha complex binding / nuclear lamina / positive regulation of DNA-directed DNA polymerase activity / Polymerase switching ...positive regulation of deoxyribonuclease activity / dinucleotide insertion or deletion binding / epsilon DNA polymerase complex / PCNA-p21 complex / mitotic telomere maintenance via semi-conservative replication / purine-specific mismatch base pair DNA N-glycosylase activity / MutLalpha complex binding / nuclear lamina / positive regulation of DNA-directed DNA polymerase activity / Polymerase switching / Telomere C-strand (Lagging Strand) Synthesis / Processive synthesis on the lagging strand / PCNA complex / Removal of the Flap Intermediate / Processive synthesis on the C-strand of the telomere / Mismatch repair (MMR) directed by MSH2:MSH3 (MutSbeta) / Mismatch repair (MMR) directed by MSH2:MSH6 (MutSalpha) / Polymerase switching on the C-strand of the telomere / Transcription of E2F targets under negative control by DREAM complex / Removal of the Flap Intermediate from the C-strand / replisome / response to L-glutamate / histone acetyltransferase binding / DNA synthesis involved in DNA repair / DNA polymerase processivity factor activity / G1/S-Specific Transcription / leading strand elongation / replication fork processing / response to dexamethasone / nuclear replication fork / SUMOylation of DNA replication proteins / estrous cycle / PCNA-Dependent Long Patch Base Excision Repair / mismatch repair / translesion synthesis / response to cadmium ion / DNA polymerase binding / cyclin-dependent protein kinase holoenzyme complex / epithelial cell differentiation / base-excision repair, gap-filling / positive regulation of DNA repair / Translesion synthesis by REV1 / Translesion synthesis by POLK / TP53 Regulates Transcription of Genes Involved in G2 Cell Cycle Arrest / Translesion synthesis by POLI / Gap-filling DNA repair synthesis and ligation in GG-NER / positive regulation of DNA replication / male germ cell nucleus / replication fork / liver regeneration / nuclear estrogen receptor binding / Recognition of DNA damage by PCNA-containing replication complex / Termination of translesion DNA synthesis / Translesion Synthesis by POLH / HDR through Homologous Recombination (HRR) / Dual Incision in GG-NER / receptor tyrosine kinase binding / DNA-templated DNA replication / cellular response to hydrogen peroxide / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / cellular response to UV / cellular response to xenobiotic stimulus / response to estradiol / E3 ubiquitin ligases ubiquitinate target proteins / heart development / 4 iron, 4 sulfur cluster binding / damaged DNA binding / chromosome, telomeric region / DNA-directed DNA polymerase / DNA-directed DNA polymerase activity / nuclear body / nucleotide binding / centrosome / chromatin binding / protein-containing complex binding / chromatin / enzyme binding / negative regulation of transcription by RNA polymerase II / DNA binding / extracellular exosome / zinc ion binding / nucleoplasm / identical protein binding / nucleus
Similarity search - Function
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 / Proliferating cell nuclear antigen signature 2. / Proliferating cell nuclear antigen, PCNA, conserved site / Proliferating cell nuclear antigen signature 1. / Proliferating cell nuclear antigen, PCNA ...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 / Proliferating cell nuclear antigen signature 2. / Proliferating cell nuclear antigen, PCNA, conserved site / Proliferating cell nuclear antigen signature 1. / Proliferating cell nuclear antigen, PCNA / Proliferating cell nuclear antigen, PCNA, N-terminal / Proliferating cell nuclear antigen, PCNA, C-terminal / Proliferating cell nuclear antigen, N-terminal domain / Proliferating cell nuclear antigen, C-terminal domain / 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 / Ribonuclease H superfamily / Ribonuclease H-like superfamily / DNA/RNA polymerase superfamily
Similarity search - Domain/homology
IRON/SULFUR CLUSTER / THYMIDINE-5'-TRIPHOSPHATE / DNA / DNA (> 10) / Proliferating cell nuclear antigen / DNA polymerase epsilon catalytic subunit
Similarity search - Component
Biological speciesHomo sapiens (human)
DNA molecule (others)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.95 Å
AuthorsWang, F. / He, Q. / Li, H.
Funding support United States, 2items
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)GM148159 United States
CitationJournal: Nat Commun / Year: 2024
Title: Structures of the human leading strand Polε-PCNA holoenzyme.
Authors: Qing He / Feng Wang / Nina Y Yao / Michael E O'Donnell / Huilin Li /
Abstract: In eukaryotes, the leading strand DNA is synthesized by Polε and the lagging strand by Polδ. These replicative polymerases have higher processivity when paired with the DNA clamp PCNA. While the ...In eukaryotes, the leading strand DNA is synthesized by Polε and the lagging strand by Polδ. These replicative polymerases have higher processivity when paired with the DNA clamp PCNA. While the structure of the yeast Polε catalytic domain has been determined, how Polε interacts with PCNA is unknown in any eukaryote, human or yeast. Here we report two cryo-EM structures of human Polε-PCNA-DNA complex, one in an incoming nucleotide bound state and the other in a nucleotide exchange state. The structures reveal an unexpected three-point interface between the Polε catalytic domain and PCNA, with the conserved PIP (PCNA interacting peptide)-motif, the unique P-domain, and the thumb domain each interacting with a different protomer of the PCNA trimer. We propose that the multi-point interface prevents other PIP-containing factors from recruiting to PCNA while PCNA functions with Polε. Comparison of the two states reveals that the finger domain pivots around the [4Fe-4S] cluster-containing tip of the P-domain to regulate nucleotide exchange and incoming nucleotide binding.
History
DepositionMar 31, 2024Deposition site: RCSB / Processing site: RCSB
Revision 1.0Sep 11, 2024Provider: repository / Type: Initial release
Revision 1.1Sep 18, 2024Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.pdbx_database_id_DOI / _citation.title / _citation.year / _em_admin.last_update
Revision 1.2Sep 25, 2024Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.page_last / _citation.pdbx_database_id_PubMed ..._citation.page_last / _citation.pdbx_database_id_PubMed / _citation.title / _citation_author.identifier_ORCID / _citation_author.name / _em_admin.last_update
Revision 1.3Oct 2, 2024Group: Data collection / Database references / Category: citation_author / em_admin
Item: _citation_author.identifier_ORCID / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: DNA polymerase epsilon catalytic subunit
B: Proliferating cell nuclear antigen
C: Proliferating cell nuclear antigen
D: Proliferating cell nuclear antigen
P: Primer DNA
T: Template DNA
hetero molecules


Theoretical massNumber of molelcules
Total (without water)377,9889
Polymers377,1306
Non-polymers8583
Water00
1


  • Idetical with deposited unit
  • defined by author&software
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

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Protein , 2 types, 4 molecules ABCD

#1: Protein DNA polymerase epsilon catalytic subunit


Mass: 261782.266 Da / Num. of mol.: 1 / Mutation: D275A, E277A
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: POLE1
Production host: Insect cell expression vector pTIE1 (others)
References: UniProt: Q9Y5S4, DNA-directed DNA polymerase
#2: Protein Proliferating cell nuclear antigen / PCNA / Cyclin


Mass: 28795.752 Da / Num. of mol.: 3
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: PCNA
Production host: Insect cell expression vector pTIE1 (others)
References: UniProt: P12004

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DNA chain , 2 types, 2 molecules PT

#3: DNA chain Primer DNA


Mass: 10823.965 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) DNA molecule (others)
#4: DNA chain Template DNA


Mass: 18136.680 Da / Num. of mol.: 1 / Source method: obtained synthetically / Source: (synth.) DNA molecule (others)

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Non-polymers , 3 types, 3 molecules

#5: Chemical ChemComp-TTP / THYMIDINE-5'-TRIPHOSPHATE


Mass: 482.168 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: C10H17N2O14P3 / Feature type: SUBJECT OF INVESTIGATION
#6: Chemical ChemComp-MG / MAGNESIUM ION


Mass: 24.305 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Mg / Feature type: SUBJECT OF INVESTIGATION
#7: Chemical ChemComp-SF4 / IRON/SULFUR CLUSTER


Mass: 351.640 Da / Num. of mol.: 1 / Source method: obtained synthetically / Formula: Fe4S4 / Feature type: SUBJECT OF INVESTIGATION

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Details

Has ligand of interestY

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: The DNA bound Pol epsilon and PCNA complex / Type: COMPLEX / Entity ID: #1-#4 / Source: RECOMBINANT
Molecular weightValue: 0.45 MDa / Experimental value: YES
Source (natural)Organism: Homo sapiens (human)
Source (recombinant)Organism: Insect cell expression vector pTIE1 (others)
Buffer solutionpH: 7.5
Buffer component
IDConc.NameFormulaBuffer-ID
125 mM4-(2-hydroxyethyl)-1-piperazineethanesulfonic acidHEPES1
2100 mMSodium chlorideNaCl1
31 mMDithiothreitolDTT1
SpecimenConc.: 0.75 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportGrid material: GOLD / Grid mesh size: 400 divisions/in. / Grid type: Quantifoil R1.2/1.3
VitrificationInstrument: FEI VITROBOT MARK IV / Cryogen name: ETHANE / Humidity: 100 % / Chamber temperature: 280 K

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELD / Nominal defocus max: 1800 nm / Nominal defocus min: 1200 nm
Image recordingElectron dose: 60 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

EM software
IDNameVersionCategoryDetails
1cryoSPARCv4.4.0particle selectionBlob picker and Template picker were used to select particles
4cryoSPARCv4.4.0CTF correction
9PHENIXmodel refinement
CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
3D reconstructionResolution: 2.95 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 320111 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL
Refine LS restraints
Refine-IDTypeDev idealNumber
ELECTRON MICROSCOPYf_bond_d0.00516823
ELECTRON MICROSCOPYf_angle_d0.9522952
ELECTRON MICROSCOPYf_dihedral_angle_d15.7922672
ELECTRON MICROSCOPYf_chiral_restr0.0532557
ELECTRON MICROSCOPYf_plane_restr0.0072781

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