3PGE

Structure of sumoylated PCNA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.231 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structure of SUMO-Modified Proliferating Cell Nuclear Antigen.

Freudenthal, B.D.Brogie, J.E.Gakhar, L.Kondratick, C.M.Washington, M.T.

(2011) J.Mol.Biol. 406: 9-17

  • DOI: 10.1016/j.jmb.2010.12.015

  • PubMed Abstract: 
  • Eukaryotic proliferating cell nuclear antigen (PCNA) is a replication accessory protein that functions in DNA replication, repair, and recombination. The various functions of PCNA are regulated by posttranslational modifications including mono-ubiqui ...

    Eukaryotic proliferating cell nuclear antigen (PCNA) is a replication accessory protein that functions in DNA replication, repair, and recombination. The various functions of PCNA are regulated by posttranslational modifications including mono-ubiquitylation, which promotes translesion synthesis, and sumoylation, which inhibits recombination. To understand how SUMO modification regulates PCNA, we generated a split SUMO-modified PCNA protein and showed that it supports cell viability and stimulates DNA polymerase δ activity. We then determined its X-ray crystal structure and found that SUMO occupies a position on the back face of the PCNA ring, which is distinct from the position occupied by ubiquitin in the structure of ubiquitin-modified PCNA. We propose that the back of PCNA has evolved to be a site of regulation that can be easily modified without disrupting ongoing reactions on the front of PCNA, such as normal DNA replication. Moreover, these modifications likely allow PCNA to function as a tool belt, whereby proteins can be recruited to the replication machinery via the back of PCNA and be held in reserve until needed.


    Organizational Affiliation

    Department of Biochemistry, University of Iowa College of Medicine, Iowa City, IA 52242-1109, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
SUMO-modified proliferating cell nuclear antigen
A
200Saccharomyces cerevisiae (strain ATCC 204508 / S288c)Mutation(s): 0 
Gene Names: POL30, SMT3
Find proteins for P15873 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  P15873
Find proteins for Q12306 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c))
Go to UniProtKB:  Q12306
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Proliferating cell nuclear antigen
B
171Saccharomyces 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
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.231 
  • Space Group: F 4 3 2
Unit Cell:
Length (Å)Angle (°)
a = 268.816α = 90.00
b = 268.816β = 90.00
c = 268.816γ = 90.00
Software Package:
Software NamePurpose
PHASERphasing
PHENIXrefinement
d*TREKdata reduction
StructureStudiodata collection
d*TREKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-12-29
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-08-02
    Type: Refinement description, Source and taxonomy