6E49

Pif1 peptide bound to PCNA trimer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.204 

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Role of the Pif1-PCNA Complex in Pol delta-Dependent Strand Displacement DNA Synthesis and Break-Induced Replication.

Buzovetsky, O.Kwon, Y.Pham, N.T.Kim, C.Ira, G.Sung, P.Xiong, Y.

(2017) Cell Rep 21: 1707-1714

  • DOI: 10.1016/j.celrep.2017.10.079
  • Primary Citation of Related Structures:  
    6E49

  • PubMed Abstract: 
  • The S. cerevisiae Pif1 helicase functions with DNA polymerase (Pol) δ in DNA synthesis during break-induced replication (BIR), a conserved pathway responsible for replication fork repair and telomere recombination. Pif1 interacts with the DNA polymerase processivity clamp PCNA, but the functional significance of the Pif1-PCNA complex remains to be elucidated ...

    The S. cerevisiae Pif1 helicase functions with DNA polymerase (Pol) δ in DNA synthesis during break-induced replication (BIR), a conserved pathway responsible for replication fork repair and telomere recombination. Pif1 interacts with the DNA polymerase processivity clamp PCNA, but the functional significance of the Pif1-PCNA complex remains to be elucidated. Here, we solve the crystal structure of PCNA in complex with a non-canonical PCNA-interacting motif in Pif1. The structure guides the construction of a Pif1 mutant that is deficient in PCNA interaction. This mutation impairs the ability of Pif1 to enhance DNA strand displacement synthesis by Pol δ in vitro and also the efficiency of BIR in cells. These results provide insights into the role of the Pif1-PCNA-Pol δ ensemble during DNA break repair by homologous recombination.


    Organizational Affiliation

    Department of Molecular Biophysics and Biochemistry, Yale University School of Medicine, New Haven, CT 06520, USA. Electronic address: yong.xiong@yale.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Proliferating cell nuclear antigenA, B, C272Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: POL30YBR088CYBR0811
UniProt
Find proteins for P15873 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P15873 
Go to UniProtKB:  P15873
Protein Feature View
Expand
  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
ATP-dependent DNA helicase PIF1D, E, F17Saccharomyces cerevisiae S288CMutation(s): 0 
Gene Names: PIF1TST1YML061CYM9958.01C
EC: 3.6.4.12
UniProt
Find proteins for P07271 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Explore P07271 
Go to UniProtKB:  P07271
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.204 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 169.346α = 90
b = 41.795β = 92.26
c = 146.968γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
PHASERphasing

Structure Validation

View Full Validation Report




Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2018-08-22
    Type: Initial release