6E49

Pif1 peptide bound to PCNA trimer


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.201 

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:  

  • 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 polymer ...

    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.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Proliferating cell nuclear antigen
A, B, C
272Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: POL30
Find proteins for P15873 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P15873
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ATP-dependent DNA helicase PIF1
D, E, F
17Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: PIF1 (TST1)
EC: 3.6.4.12
Find proteins for P07271 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to Gene View: PIF1
Go to UniProtKB:  P07271
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.9 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.201 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 169.346α = 90.00
b = 41.795β = 92.26
c = 146.968γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
HKL-2000data scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

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