2D07

Crystal Structure of SUMO-3-modified Thymine-DNA Glycosylase

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.208 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history. 

Literature

Crystal Structure of SUMO-3-modified Thymine-DNA Glycosylase

Baba, D., Maita, N., Jee, J.G., Uchimura, Y., Saitoh, H., Sugasawa, K., Hanaoka, F., Tochio, H., Hiroaki, H., Shirakawa, M.

(2006) J.Mol.Biol. 359: 137-147

  • DOI: 10.1016/j.jmb.2006.03.036

  • PubMed Abstract: 

    • Modification of cellular proteins by the small ubiquitin-like modifier SUMO is important in regulating various cellular events. Many different nuclear proteins are targeted by SUMO, and the functional consequences of this modification are diverse. Fo ...

    Modification of cellular proteins by the small ubiquitin-like modifier SUMO is important in regulating various cellular events. Many different nuclear proteins are targeted by SUMO, and the functional consequences of this modification are diverse. For most proteins, however, the functional and structural consequences of modification by specific SUMO isomers are unclear. Conjugation of SUMO to thymine-DNA glycosylase (TDG) induces the dissociation of TDG from its product DNA. Structure determination of the TDG central region conjugated to SUMO-1 previously suggested a mechanism in which the SUMOylation-induced conformational change in the C-terminal region of TDG releases TDG from tight binding to its product DNA. Here, we have determined the crystal structure of the central region of TDG conjugated to SUMO-3. The overall structure of SUMO-3-conjugated TDG is similar to the previously reported structure of TDG conjugated to SUMO-1, despite the relatively low level of amino acid sequence similarity between SUMO-3 and SUMO-1. The two structures revealed that the sequence of TDG that resembles the SUMO-binding motif (SBM) can form an intermolecular beta-sheet with either SUMO-1 or SUMO-3. Structural comparison with the canonical SBM shows that this SBM-like sequence of TDG retains all of the characteristic interactions of the SBM, indicating sequence diversity in the SBM.

    Organizational Affiliation: 

    Graduate School of Integrated Science, Yokohama City University, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
G/T mismatch-specific thymine DNA glycosylase
A
230Homo sapiensMutation(s): 0 
Gene Names: TDG
EC: 3.2.2.29
Find proteins for Q13569 (Homo sapiens)
Go to Gene View: TDG
Go to UniProtKB:  Q13569
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Ubiquitin-like protein SMT3B
B
93Homo sapiensMutation(s): 0 
Gene Names: SUMO2 (SMT3B, SMT3H2)
Find proteins for P61956 (Homo sapiens)
Go to Gene View: SUMO2
Go to UniProtKB:  P61956
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.208 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 106.481α = 90.00
b = 75.931β = 114.98
c = 50.527γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
CNSrefinement
MOSFLMdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-06-06
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance