1MUN

CATALYTIC DOMAIN OF MUTY FROM ESCHERICHIA COLI D138N MUTANT

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.169 
  • R-Value Observed: 0.124 

wwPDB Validation   3D Report Full Report


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


Literature

MutY catalytic core, mutant and bound adenine structures define specificity for DNA repair enzyme superfamily.

Guan, Y., Manuel, R.C., Arvai, A.S., Parikh, S.S., Mol, C.D., Miller, J.H., Lloyd, S., Tainer, J.A.

(1998) Nat Struct Biol 5: 1058-1064

  • DOI: 10.1038/4168
  • Primary Citation of Related Structures:  
    1MUN, 1MUD, 1MUY

  • PubMed Abstract: 

    • The DNA glycosylase MutY, which is a member of the Helix-hairpin-Helix (HhH) DNA glycosylase superfamily, excises adenine from mispairs with 8-oxoguanine and guanine. High-resolution crystal structures of the MutY catalytic core (cMutY), the complex with bound adenine, and designed mutants reveal the basis for adenine specificity and glycosyl bond cleavage chemistry ...

    The DNA glycosylase MutY, which is a member of the Helix-hairpin-Helix (HhH) DNA glycosylase superfamily, excises adenine from mispairs with 8-oxoguanine and guanine. High-resolution crystal structures of the MutY catalytic core (cMutY), the complex with bound adenine, and designed mutants reveal the basis for adenine specificity and glycosyl bond cleavage chemistry. The two cMutY helical domains form a positively-charged groove with the adenine-specific pocket at their interface. The Watson-Crick hydrogen bond partners of the bound adenine are substituted by protein atoms, confirming a nucleotide flipping mechanism, and supporting a specific DNA binding orientation by MutY and structurally related DNA glycosylases.

    Organizational Affiliation: 

    Department of Molecular Biology, Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, California 92037, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
ADENINE GLYCOSYLASE A225Escherichia coliMutation(s): 1 
EC: 3.2.2 (PDB Primary Data), 3.2.2.31 (UniProt)
Find proteins for P17802 (Escherichia coli (strain K12))
Explore P17802 
Go to UniProtKB:  P17802
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 0.169 
  • R-Value Observed: 0.124 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.5α = 90
b = 49β = 122.9
c = 69.4γ = 90
Software Package:
Software NamePurpose
SHELXL-97model building
SHELXL-97refinement
DENZOdata reduction
SCALEPACKdata scaling
SHELXL-97phasing

Structure Validation

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Entry History 

Deposition Data

  • Deposited Date: 1998-08-26 
  • Released Date: 1999-08-26 
    • Deposition Author(s): Guan, Y., Tainer, J.A.

Revision History  (Full details and data files)

  • Version 1.0: 1999-08-26
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance