- EMDB-44358: Human polymerase epsilon bound to PCNA and DNA in the nucleotide ... -
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Entry
Database: EMDB / ID: EMD-44358
Title
Human polymerase epsilon bound to PCNA and DNA in the nucleotide bound state
Map data
Final sharpen cryo-em by cryosparc
Sample
Complex: The DNA bound Pol epsilon and PCNA complex
Protein or peptide: DNA polymerase epsilon catalytic subunit
Protein or peptide: Proliferating cell nuclear antigen
DNA: Primer DNA
DNA: Template DNA
Ligand: THYMIDINE-5'-TRIPHOSPHATE
Ligand: MAGNESIUM ION
Ligand: IRON/SULFUR CLUSTER
Keywords
DNA polymerase / DNA / DNA Binding Protein-DNA complex
Function / homology
Function and homology information
epsilon DNA polymerase complex / positive regulation of deoxyribonuclease activity / dinucleotide insertion or deletion binding / PCNA-p21 complex / mitotic telomere maintenance via semi-conservative replication / purine-specific mismatch base pair DNA N-glycosylase activity / nuclear lamina / positive regulation of DNA-directed DNA polymerase activity / Polymerase switching / Processive synthesis on the lagging strand ...epsilon DNA polymerase complex / positive regulation of deoxyribonuclease activity / dinucleotide insertion or deletion binding / PCNA-p21 complex / mitotic telomere maintenance via semi-conservative replication / purine-specific mismatch base pair DNA N-glycosylase activity / nuclear lamina / positive regulation of DNA-directed DNA polymerase activity / Polymerase switching / Processive synthesis on the lagging strand / MutLalpha complex binding / PCNA complex / Removal of the Flap Intermediate / Telomere C-strand (Lagging Strand) Synthesis / Mismatch repair (MMR) directed by MSH2:MSH3 (MutSbeta) / Mismatch repair (MMR) directed by MSH2:MSH6 (MutSalpha) / Transcription of E2F targets under negative control by DREAM complex / Polymerase switching on the C-strand of the telomere / replisome / response to L-glutamate / Processive synthesis on the C-strand of the telomere / Removal of the Flap Intermediate from the C-strand / response to dexamethasone / DNA synthesis involved in DNA repair / histone acetyltransferase binding / DNA polymerase processivity factor activity / G1/S-Specific Transcription / leading strand elongation / nuclear replication fork / replication fork processing / SUMOylation of DNA replication proteins / PCNA-Dependent Long Patch Base Excision Repair / response to cadmium ion / translesion synthesis / estrous cycle / mismatch repair / cyclin-dependent protein kinase holoenzyme complex / base-excision repair, gap-filling / DNA polymerase binding / epithelial cell differentiation / liver regeneration / TP53 Regulates Transcription of Genes Involved in G2 Cell Cycle Arrest / positive regulation of DNA repair / positive regulation of DNA replication / Translesion synthesis by REV1 / nuclear estrogen receptor binding / replication fork / Translesion synthesis by POLK / Translesion synthesis by POLI / Gap-filling DNA repair synthesis and ligation in GG-NER / male germ cell nucleus / Termination of translesion DNA synthesis / Translesion Synthesis by POLH / Recognition of DNA damage by PCNA-containing replication complex / receptor tyrosine kinase binding / HDR through Homologous Recombination (HRR) / DNA-templated DNA replication / cellular response to xenobiotic stimulus / Dual Incision in GG-NER / cellular response to hydrogen peroxide / Dual incision in TC-NER / Gap-filling DNA repair synthesis and ligation in TC-NER / cellular response to UV / response to estradiol / E3 ubiquitin ligases ubiquitinate target proteins / heart development / 4 iron, 4 sulfur cluster binding / chromatin organization / DNA-directed DNA polymerase / damaged DNA binding / DNA-directed DNA polymerase activity / chromosome, telomeric region / nuclear body / nucleotide binding / chromatin binding / centrosome / chromatin / protein-containing complex binding / 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
Zinc finger domain of DNA polymerase-epsilon / : / : / 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. ...Zinc finger domain of DNA polymerase-epsilon / : / : / 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
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
Citation
Journal: 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.
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