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Poxvirus uracil‐DNA glycosylase—An unusual member of the family I uracil‐DNA glycosylases

Journal Article · · Protein Science
DOI:https://doi.org/10.1002/pro.3058· OSTI ID:1401237
 [1];  [2];  [3];  [2];  [4];  [3];  [5];  [6];  [1]
  1. Department of Medicine University of Alabama at Birmingham Birmingham Alabama 35294
  2. Department of Microbiology, School of Dental Medicine University of Pennsylvania Philadelphia Pennsylvania 19104
  3. Department of Microbiology University of Alabama at Birmingham Birmingham Alabama 35294
  4. MacCHESS (Macromolecular Diffraction Facility at CHESS) Cornell University Ithaca New York 14853
  5. Department of Microbiology, School of Dental Medicine University of Pennsylvania Philadelphia Pennsylvania 19104, Abramson Cancer Center, School of Medicine University of Pennsylvania Philadelphia Pennsylvania 19104
  6. Department of Chemistry and Chemical Biology Cornell University and NE‐CAT Argonne Illinois 60439

Abstract

Uracil‐DNA glycosylases are ubiquitous enzymes, which play a key role repairing damages in DNA and in maintaining genomic integrity by catalyzing the first step in the base excision repair pathway. Within the superfamily of uracil‐DNA glycosylases family I enzymes or UNGs are specific for recognizing and removing uracil from DNA. These enzymes feature conserved structural folds, active site residues and use common motifs for DNA binding, uracil recognition and catalysis. Within this family the enzymes of poxviruses are unique and most remarkable in terms of amino acid sequences, characteristic motifs and more importantly for their novel non‐enzymatic function in DNA replication. UNG of vaccinia virus, also known as D4, is the most extensively characterized UNG of the poxvirus family. D4 forms an unusual heterodimeric processivity factor by attaching to a poxvirus‐specific protein A20, which also binds to the DNA polymerase E9 and recruits other proteins necessary for replication. D4 is thus integrated in the DNA polymerase complex, and its DNA‐binding and DNA scanning abilities couple DNA processivity and DNA base excision repair at the replication fork. The adaptations necessary for taking on the new function are reflected in the amino acid sequence and the three‐dimensional structure of D4. An overview of the current state of the knowledge on the structure‐function relationship of D4 is provided here.

Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1401237
Alternate ID(s):
OSTI ID: 1335971
Journal Information:
Protein Science, Journal Name: Protein Science Journal Issue: 12 Vol. 25; ISSN 0961-8368
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
United Kingdom
Language:
English

References (43)

Uracil-DNA glycosylases-Structural and functional perspectives on an essential family of DNA repair enzymes: Uracil-DNA Glycosylases journal October 2014
Mapping Interaction Sites of the A20R Protein Component of the Vaccinia Virus DNA Replication Complex journal November 2002
Crystal structure of human uracil-DNA glycosylase in complex with a protein inhibitor: Protein mimicry of DNA journal September 1995
Vaccinia virus DNA polymerase. In vitro analysis of parameters affecting processivity. journal December 1994
Structure and function in the uracil-DNA glycosylase superfamily journal August 2000
Lessons learned from structural results on uracil-DNA glycosylase journal August 2000
Clamp loaders and sliding clamps journal April 2002
Identification of polymerase and processivity inhibitors of vaccinia DNA synthesis using a stepwise screening approach journal November 2008
Inhibition of vaccinia virus replication by peptide aptamers journal June 2009
A small molecule screen in yeast identifies inhibitors targeting protein–protein interactions within the vaccinia virus replication complex journal November 2012
Mutations at Arginine 276 transform human uracil-DNA glycosylase into a single-stranded DNA-specific uracil-DNA glycosylase journal July 2005
Crystal Structure of Family 5 Uracil-DNA Glycosylase Bound to DNA journal November 2007
Uracil-DNA glycosylase: Structural, thermodynamic and kinetic aspects of lesion search and recognition journal March 2010
Electrostatic Properties of Complexes along a DNA Glycosylase Damage Search Pathway journal November 2014
Substrate Specificity of Homogeneous Monkeypox Virus Uracil-DNA Glycosylase journal October 2007
Identification of Inhibitors that Block Vaccinia Virus Infection by Targeting the DNA Synthesis Processivity Factor D4 journal May 2011
Design of Potent Poxvirus Inhibitors of the Heterodimeric Processivity Factor Required for Viral Replication journal April 2013
Identification of Non-Nucleoside DNA Synthesis Inhibitors of Vaccinia Virus by High-Throughput Screening journal October 2008
A nucleotide-flipping mechanism from the structure of human uracil–DNA glycosylase bound to DNA journal November 1996
Enzymatic capture of an extrahelical thymine in the search for uracil in DNA journal August 2007
DNA Structure Changes Coupled to Protein Binding book April 2001
Genome-wide analysis of vaccinia virus protein-protein interactions journal April 2000
Uracil DNA glycosylase uses DNA hopping and short-range sliding to trap extrahelical uracils journal July 2008
Evaluation of the Role of the Vaccinia Virus Uracil DNA Glycosylase and A20 Proteins as Intrinsic Components of the DNA Polymerase Holoenzyme journal May 2011
New Family of Deamination Repair Enzymes in Uracil-DNA Glycosylase Superfamily journal June 2011
Crystal Structure of the Vaccinia Virus Uracil-DNA Glycosylase in Complex with DNA journal June 2015
Vaccinia Virus Uracil DNA Glycosylase Interacts with the A20 Protein to Form a Heterodimeric Processivity Factor for the Viral DNA Polymerase journal December 2005
Base excision repair initiation revealed by crystal structures and binding kinetics of human uracil-DNA glycosylase with DNA journal September 1998
A novel uracil-DNA glycosylase family related to the helix-hairpin-helix DNA glycosylase superfamily journal April 2003
Characterisation of the substrate specificity of homogeneous vaccinia virus uracil-DNA glycosylase journal August 2003
Crystallization and preliminary X-ray diffraction analysis of three recombinant mutants of Vaccinia virus uracil DNA glycosylase journal February 2013
Structure of the uracil complex of Vaccinia virus uracil DNA glycosylase journal November 2013
Structural analysis of point mutations at the Vaccinia virus A20/D4 interface journal August 2016
Identification of Protein-Protein Interaction Inhibitors Targeting Vaccinia Virus Processivity Factor for Development of Antiviral Agents journal August 2011
Domain Organization of Vaccinia Virus Helicase-Primase D5 journal February 2016
Vaccinia Virus D4 Mutants Defective in Processive DNA Synthesis Retain Binding to A20 and DNA journal September 2010
Low-Resolution Structure of Vaccinia Virus DNA Replication Machinery journal November 2012
Role of Vaccinia Virus A20R Protein in DNA Replication: Construction and Characterization of Temperature-Sensitive Mutants journal February 2001
Vaccinia Virus Uracil DNA Glycosylase Has an Essential Role in DNA Synthesis That Is Independent of Its Glycosylase Activity: Catalytic Site Mutations Reduce Virulence but Not Virus Replication in Cultured Cells journal January 2003
Mutations in active-site residues of the uracil-DNA glycosylase encoded by vaccinia virus are incompatible with virus viability journal November 1996
Crystal structure of vaccinia virus uracil-DNA glycosylase reveals dimeric assembly journal January 2007
Binding of undamaged double stranded DNA to vaccinia virus uracil-DNA Glycosylase journal June 2015
Crystal Structure of the Vaccinia Virus DNA Polymerase Holoenzyme Subunit D4 in Complex with the A20 N-Terminal Domain journal March 2014

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