6CX2

S177G Mutant of Yeast PCNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.101 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.217 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Identification of New Mutations at the PCNA Subunit Interface that Block Translesion Synthesis.

Kondratick, C.M.Boehm, E.M.Dieckman, L.M.Powers, K.T.Sanchez, J.C.Mueting, S.R.Washington, M.T.

(2016) PLoS ONE 11: e0157023

  • DOI: 10.1371/journal.pone.0157023
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Proliferating cell nuclear antigen (PCNA) plays an essential role in DNA replication and repair by interacting with a large number of proteins involved in these processes. Two amino acid substitutions in PCNA, both located at the subunit interface, h ...

    Proliferating cell nuclear antigen (PCNA) plays an essential role in DNA replication and repair by interacting with a large number of proteins involved in these processes. Two amino acid substitutions in PCNA, both located at the subunit interface, have previously been shown to block translesion synthesis (TLS), a pathway for bypassing DNA damage during replication. To better understand the role of the subunit interface in TLS, we used random mutagenesis to generate a set of 33 PCNA mutants with substitutions at the subunit interface. We assayed the full set of mutants for viability and sensitivity to ultraviolet (UV) radiation. We then selected a subset of 17 mutants and measured their rates of cell growth, spontaneous mutagenesis, and UV-induced mutagenesis. All except three of these 17 mutants were partially or completely defective in induced mutagenesis, which indicates a partial or complete loss of TLS. These results demonstrate that the integrity of the subunit interface of PCNA is essential for efficient TLS and that even conservative substitutions have the potential to disrupt this process.


    Organizational Affiliation

    Department of Biochemistry, Carver College of Medicine, University of Iowa, Iowa City, Iowa, 52242, United States of America.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Proliferating cell nuclear antigen
A
259Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 1 
Gene Names: POL30
Find proteins for P15873 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P15873
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.101 Å
  • R-Value Free: 0.244 
  • R-Value Work: 0.217 
  • Space Group: P 21 3
Unit Cell:
Length (Å)Angle (°)
a = 123.756α = 90.00
b = 123.756β = 90.00
c = 123.756γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
d*TREKdata reduction
PHASERphasing
Cootmodel building
REFMACrefinement
PHENIXrefinement
Blu-Icedata collection
d*TREKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2018-04-02 
  • Released Date: 2018-04-11 
  • Deposition Author(s): Powers, K.T.

Funding OrganizationLocationGrant Number
National Institute of General MedicineUnited StatesTGM081433
National Institute of General MedicineUnited StatesGM108027

Revision History 

  • Version 1.0: 2018-04-11
    Type: Initial release