5AYS

Crystal structure of SAUGI/HSV UDG complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.196 

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Literature

Using structural-based protein engineering to modulate the differential inhibition effects of SAUGI on human and HSV uracil DNA glycosylase.

Wang, H.C.Ho, C.H.Chou, C.C.Ko, T.P.Huang, M.F.Hsu, K.C.Wang, A.H.

(2016) Nucleic Acids Res 44: 4440-4449

  • DOI: 10.1093/nar/gkw185
  • Primary Citation of Related Structures:  
    5AYR, 5AYS

  • PubMed Abstract: 
  • Uracil-DNA glycosylases (UDGs) are highly conserved proteins that can be found in a wide range of organisms, and are involved in the DNA repair and host defense systems. UDG activity is controlled by various cellular factors, including the uracil-DNA ...

    Uracil-DNA glycosylases (UDGs) are highly conserved proteins that can be found in a wide range of organisms, and are involved in the DNA repair and host defense systems. UDG activity is controlled by various cellular factors, including the uracil-DNA glycosylase inhibitors, which are DNA mimic proteins that prevent the DNA binding sites of UDGs from interacting with their DNA substrate. To date, only three uracil-DNA glycosylase inhibitors, phage UGI, p56, and Staphylococcus aureus SAUGI, have been determined. We show here that SAUGI has differential inhibitory effects on UDGs from human, bacteria, Herpes simplex virus (HSV; human herpesvirus 1) and Epstein-Barr virus (EBV; human herpesvirus 4). Newly determined crystal structures of SAUGI/human UDG and a SAUGI/HSVUDG complex were used to explain the differential binding activities of SAUGI on these two UDGs. Structural-based protein engineering was further used to modulate the inhibitory ability of SAUGI on human UDG and HSVUDG. The results of this work extend our understanding of DNA mimics as well as potentially opening the way for novel therapeutic applications for this kind of protein.


    Organizational Affiliation

    Graduate Institute of Translational Medicine, College of Medical Science and Technology, Taipei Medical University, Taipei 110, Taiwan Institute of Biological Chemistry, Academia Sinica, Taipei 115, Taiwan Institute of Biochemical Sciences, National Taiwan University, Taipei 106, Taiwan Core Facilities for Protein Structural Analysis, Academia Sinica, Taipei 115, Taiwan ahjwang@gate.sinica.edu.tw.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Uracil-DNA glycosylaseAB256Human alphaherpesvirus 1 strain 17Mutation(s): 0 
Gene Names: UL2
EC: 3.2.2.27
Find proteins for P10186 (Human herpesvirus 1 (strain 17))
Explore P10186 
Go to UniProtKB:  P10186
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Uncharacterized proteinCD112Staphylococcus aureusMutation(s): 0 
Find proteins for Q936H5 (Staphylococcus aureus)
Explore Q936H5 
Go to UniProtKB:  Q936H5
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.09 Å
  • R-Value Free: 0.223 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.196 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 53.298α = 65.1
b = 63.01β = 89.58
c = 65.512γ = 88.38
Software Package:
Software NamePurpose
REFMACrefinement
Blu-Icedata reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Science CouncilTaiwanNSC 102-2311-B-038 -003
National Science CouncilTaiwanMOST 103-2311-B-038 -005

Revision History 

  • Version 1.0: 2016-06-08
    Type: Initial release