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- PDB-3ja9: Structure of native human PCNA -

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Basic information

Entry
Database: PDB / ID: 3ja9
TitleStructure of native human PCNA
ComponentsProliferating cell nuclear antigen
KeywordsDNA BINDING PROTEIN / DNA / REPLICATION / PROCESSIVITY / ONCOGENE / DNA-BINDING SYSTEMIC LUPUS ERYTHEMATOSUS
Function / homology
Function and homology information


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 / positive regulation of DNA-directed DNA polymerase activity / MutLalpha complex binding / nuclear lamina / Polymerase switching / Telomere C-strand (Lagging Strand) Synthesis ...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 / positive regulation of DNA-directed DNA polymerase activity / MutLalpha complex binding / nuclear lamina / Polymerase switching / Telomere C-strand (Lagging Strand) Synthesis / Processive synthesis on the lagging strand / PCNA complex / Processive synthesis on the C-strand of the telomere / Removal of the Flap Intermediate / 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 / leading strand elongation / DNA polymerase processivity factor activity / replication fork processing / G1/S-Specific Transcription / response to dexamethasone / nuclear replication fork / SUMOylation of DNA replication proteins / estrous cycle / PCNA-Dependent Long Patch Base Excision Repair / mismatch repair / cyclin-dependent protein kinase holoenzyme complex / translesion synthesis / positive regulation of DNA replication / response to cadmium ion / DNA polymerase binding / base-excision repair, gap-filling / positive regulation of DNA repair / epithelial cell differentiation / Translesion synthesis by REV1 / Translesion synthesis by POLK / Translesion synthesis by POLI / Gap-filling DNA repair synthesis and ligation in GG-NER / TP53 Regulates Transcription of Genes Involved in G2 Cell Cycle Arrest / replication fork / male germ cell nucleus / 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 / 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 / damaged DNA binding / chromosome, telomeric region / nuclear body / centrosome / chromatin binding / chromatin / protein-containing complex binding / negative regulation of transcription by RNA polymerase II / enzyme binding / extracellular exosome / nucleoplasm / identical protein binding / nucleus
Similarity search - Function
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 / :
Similarity search - Domain/homology
Proliferating cell nuclear antigen
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / negative staining / Resolution: 22 Å
AuthorsLau, W.C.Y. / Li, Y. / Zhang, Q. / Huen, M.S.Y.
CitationJournal: Sci Rep / Year: 2015
Title: Molecular architecture of the Ub-PCNA/Pol η complex bound to DNA.
Authors: Wilson C Y Lau / Yinyin Li / Qinfen Zhang / Michael S Y Huen /
Abstract: Translesion synthesis (TLS) is the mechanism by which DNA polymerases replicate through unrepaired DNA lesions. TLS is activated by monoubiquitination of the homotrimeric proliferating cell nuclear ...Translesion synthesis (TLS) is the mechanism by which DNA polymerases replicate through unrepaired DNA lesions. TLS is activated by monoubiquitination of the homotrimeric proliferating cell nuclear antigen (PCNA) at lysine-164, followed by the switch from replicative to specialized polymerases at DNA damage sites. Pol η belongs to the Y-Family of specialized polymerases that can efficiently bypass UV-induced lesions. Like other members of the Y-Family polymerases, its recruitment to the damaged sites is mediated by the interaction with monoubiquitinated PCNA (Ub-PCNA) via its ubiquitin-binding domain and non-canonical PCNA-interacting motif in the C-terminal region. The structural determinants underlying the direct recognition of Ub-PCNA by Pol η, or Y-Family polymerases in general, remain largely unknown. Here we report a structure of the Ub-PCNA/Pol η complex bound to DNA determined by single-particle electron microscopy (EM). The overall obtained structure resembles that of the editing PCNA/PolB complex. Analysis of the map revealed the conformation of ubiquitin that binds the C-terminal domain of Pol η. Our present study suggests that the Ub-PCNA/Pol η interaction requires the formation of a structured binding interface, which is dictated by the inherent flexibility of Ub-PCNA.
History
DepositionMay 19, 2015Deposition site: RCSB / Processing site: PDBJ
Revision 1.0Dec 9, 2015Provider: repository / Type: Initial release
Revision 1.1Dec 16, 2015Group: Other
Revision 1.2Oct 23, 2019Group: Data collection / Database references / Other
Category: atom_sites / cell ...atom_sites / cell / database_2 / em_image_scans
Item: _atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[1][3] ..._atom_sites.fract_transf_matrix[1][1] / _atom_sites.fract_transf_matrix[1][3] / _atom_sites.fract_transf_matrix[2][2] / _atom_sites.fract_transf_matrix[3][3] / _cell.Z_PDB
Revision 1.3Dec 18, 2019Group: Data collection / Category: em_software
Item: _em_software.fitting_id / _em_software.image_processing_id

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Structure visualization

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Assembly

Deposited unit
A: Proliferating cell nuclear antigen
B: Proliferating cell nuclear antigen
C: Proliferating cell nuclear antigen


Theoretical massNumber of molelcules
Total (without water)86,3873
Polymers86,3873
Non-polymers00
Water2,540141
1


  • Idetical with deposited unit
  • defined by author
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1

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Components

#1: 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: ESCHERICHIA COLI (E. coli) / Strain (production host): BL21(DE3) / References: UniProt: P12004
#2: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 141 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY / Number of used crystals: 1
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

ComponentName: Ub-PCNA/Pol eta/DNA / Type: COMPLEX
Details: Monomeric catalytic core of Pol eta binds to one homotrimeric Ub-PCNA
Synonym: Monoubiquitinated PCNA
Molecular weightValue: 0.2 MDa / Experimental value: YES
Buffer solutionpH: 8 / Details: 50mM Tris-HCl, 5mM MgCl2
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: YES / Vitrification applied: NO
Details: 50mM Tris-HCl, 5mM MgCl2 (Stain Details Grids with adsorbed protein floated on two 20 ul drops of 2% w/v uranyl acetate solution for 30 seconds)
EM stainingType: NEGATIVE / Material: Uranyl Acetate
Specimen supportDetails: Continuous carbon coated copper grids (Ted Pella), glow-discharged for 30 seconds

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Electron microscopy imaging

MicroscopyModel: JEOL 2010 / Date: Nov 12, 2014
Electron gunElectron source: LAB6 / Accelerating voltage: 200 kV / Illumination mode: FLOOD BEAM
Electron lensMode: BRIGHT FIELDBright-field microscopy / Nominal magnification: 50000 X / Camera length: 0 mm
Specimen holderSpecimen holder model: SIDE ENTRY, EUCENTRIC / Tilt angle max: 0 ° / Tilt angle min: 0 °
Image recordingElectron dose: 18 e/Å2 / Film or detector model: GATAN ULTRASCAN 4000 (4k x 4k)

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Processing

EM software
IDNameVersionCategory
1UCSF Chimeramodel fitting
2EMAN23D reconstruction
CTF correctionDetails: Particles
SymmetryPoint symmetry: C1 (asymmetric)
3D reconstructionMethod: Projection matching / Resolution: 22 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 7330 / Details: (Single particle--Applied symmetry: C1) / Num. of class averages: 227 / Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL / Details: REFINEMENT PROTOCOL--RIGID BODY
Atomic model buildingPDB-ID: 1VYM

1vym

Refinement stepCycle: LAST
ProteinNucleic acidLigandSolventTotal
Num. atoms5892 0 0 141 6033

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