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Open data
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Basic information
Entry | Database: PDB / ID: 6t7y | ||||||
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Title | Structure of PCNA bound to cPIP motif of DP2 from P. abyssi | ||||||
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![]() | REPLICATION / PCNA / DP2 / PolD / PIP-box | ||||||
Function / homology | ![]() exodeoxyribonuclease I / intein-mediated protein splicing / single-stranded DNA 3'-5' DNA exonuclease activity / DNA catabolic process / DNA polymerase processivity factor activity / leading strand elongation / regulation of DNA replication / DNA-templated DNA replication / DNA-directed DNA polymerase / DNA-directed DNA polymerase activity / DNA binding Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() ![]() ![]() | ||||||
![]() | Madru, C. / Raia, P. / Hugonneau Beaufet, I. / Delarue, M. / Carroni, M. / Sauguet, L. | ||||||
Funding support | ![]()
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![]() | ![]() Title: Structural basis for the increased processivity of D-family DNA polymerases in complex with PCNA. Authors: Clément Madru / Ghislaine Henneke / Pierre Raia / Inès Hugonneau-Beaufet / Gérard Pehau-Arnaudet / Patrick England / Erik Lindahl / Marc Delarue / Marta Carroni / Ludovic Sauguet / ![]() ![]() Abstract: Replicative DNA polymerases (DNAPs) have evolved the ability to copy the genome with high processivity and fidelity. In Eukarya and Archaea, the processivity of replicative DNAPs is greatly enhanced ...Replicative DNA polymerases (DNAPs) have evolved the ability to copy the genome with high processivity and fidelity. In Eukarya and Archaea, the processivity of replicative DNAPs is greatly enhanced by its binding to the proliferative cell nuclear antigen (PCNA) that encircles the DNA. We determined the cryo-EM structure of the DNA-bound PolD-PCNA complex from Pyrococcus abyssi at 3.77 Å. Using an integrative structural biology approach - combining cryo-EM, X-ray crystallography, protein-protein interaction measurements, and activity assays - we describe the molecular basis for the interaction and cooperativity between a replicative DNAP and PCNA. PolD recruits PCNA via a complex mechanism, which requires two different PIP-boxes. We infer that the second PIP-box, which is shared with the eukaryotic Polα replicative DNAP, plays a dual role in binding either PCNA or primase, and could be a master switch between an initiation and a processive phase during replication. | ||||||
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 113.5 KB | Display | ![]() |
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PDB format | ![]() | 88.2 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Arichive directory | ![]() ![]() | HTTPS FTP |
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-Related structure data
Related structure data | ![]() 6t7xC ![]() 6t8hC ![]() 5aujS S: Starting model for refinement C: citing same article ( |
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Similar structure data |
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Links
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Assembly
Deposited unit | ![]()
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1 | ![]()
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Unit cell |
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Components
#1: Protein | Mass: 29471.764 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Strain: GE5 / Orsay / Gene: pcn, PYRAB13790, PAB1465 / Production host: ![]() ![]() |
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#2: Protein/peptide | Mass: 1485.746 Da / Num. of mol.: 1 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() References: UniProt: Q9V2F4*PLUS, DNA-directed DNA polymerase |
#3: Water | ChemComp-HOH / |
-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 2.37 Å3/Da / Density % sol: 48.13 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion, sitting drop / pH: 7.1 / Details: 30% PEG 400 0.2 M MgCl2 0.1M BIS-TRIS pH7.1 |
-Data collection
Diffraction | Mean temperature: 100 K / Serial crystal experiment: N |
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Diffraction source | Source: ![]() ![]() ![]() |
Detector | Type: DECTRIS PILATUS 6M / Detector: PIXEL / Date: Nov 11, 2018 |
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray |
Radiation wavelength | Wavelength: 0.9793 Å / Relative weight: 1 |
Reflection | Resolution: 2.7→70.37 Å / Num. obs: 6983 / % possible obs: 89.5 % / Redundancy: 5.2 % / CC1/2: 0.999 / Net I/σ(I): 15.8 |
Reflection shell | Resolution: 2.701→2.863 Å / Num. unique obs: 436 / CC1/2: 0.21 |
-Phasing
Phasing | Method: ![]() |
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Processing
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Refinement | Method to determine structure: ![]() Starting model: 5auj Resolution: 2.7→70.37 Å / Cor.coef. Fo:Fc: 0.966 / Cor.coef. Fo:Fc free: 0.937 / SU B: 50.167 / SU ML: 0.427 / Cross valid method: THROUGHOUT / σ(F): 0 / ESU R Free: 0.424 Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES : WITH TLS ADDED
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Solvent computation | Ion probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Displacement parameters | Biso max: 218.27 Å2 / Biso mean: 134.05 Å2 / Biso min: 84.66 Å2
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Refinement step | Cycle: final / Resolution: 2.7→70.37 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.701→2.771 Å / Rfactor Rfree error: 0 / Total num. of bins used: 20
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Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
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Refinement TLS group |
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