1PVS

3-methyladenine Glcosylase II(AlkA) Hypoxanthine complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.232 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

3-methyladenine-DNA glycosylase II: the crystal structure of an AlkA-hypoxanthine complex suggests the possibility of product inhibition.

Teale, M.Symersky, J.DeLucas, L.

(2002) Bioconjug.Chem. 13: 403-407


  • PubMed Abstract: 
  • Escherichia coli (E. coli) protein 3-methyladenine-DNA glycosylase II (AlkA) functions primarily by removing alkylation damage from duplex and single stranded DNA. A crystal structure of AlkA was refined to 2.0 A resolution. This structure in turn wa ...

    Escherichia coli (E. coli) protein 3-methyladenine-DNA glycosylase II (AlkA) functions primarily by removing alkylation damage from duplex and single stranded DNA. A crystal structure of AlkA was refined to 2.0 A resolution. This structure in turn was used to refine an AlkA-hypoxanthine (substrate) complex structure to 2.4 A resolution. The complex structure shows hypoxanthine located in AlkA's active site stacked between residues W218 and Y239. The structural analysis of the AlkA and AlkA-hypoxanthine structures indicate that free hypoxanthine binding in the active site may inhibit glycosylase activity.


    Organizational Affiliation

    Laboratory for Structural Biology, University of Alabama in Huntsville, 35899, USA. tealem@email.uah.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DNA-3-methyladenine glycosylase II
A, B
282Escherichia coli (strain K12)Gene Names: alkA (aidA)
EC: 3.2.2.21
Find proteins for P04395 (Escherichia coli (strain K12))
Go to UniProtKB:  P04395
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
7HP
Query on 7HP

Download SDF File 
Download CCD File 
A, B
7-HYDROXY-PYRAZOLO[4,3-D]PYRIMIDINE
C5 H4 N4 O
JFZSDNLQDTYVEE-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.292 
  • R-Value Work: 0.232 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 58.005α = 90.00
b = 75.979β = 110.03
c = 61.417γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
CNSrefinement
SCALEPACKdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 2003-06-28 
  • Released Date: 2004-06-08 
  • Deposition Author(s): Teale, M.

Revision History 

  • Version 1.0: 2004-06-08
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance