Experimental Data Snapshot

  • Resolution: 2.50 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.226 

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This is version 1.3 of the entry. See complete history


Crystal structure of MurG:UDP-GlcNAc complex reveals common structural principles of a superfamily of glycosyltransferases

Hu, Y.Chen, L.Ha, S.Gross, B.Falcone, B.Walker, D.Mokhtarzadeh, M.Walker, S.

(2003) Proc Natl Acad Sci U S A 100: 845-849

  • DOI: https://doi.org/10.1073/pnas.0235749100
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    MurG is an essential glycosyltransferase that forms the glycosidic linkage between N-acetyl muramyl pentapeptide and N-acetyl glucosamine in the biosynthesis of the bacterial cell wall. This enzyme is a member of a major superfamily of NDP-glycosyltransferases for which no x-ray structures containing intact substrates have been reported. Here we present the 2.5-A crystal structure of Escherichia coli MurG in complex with its donor substrate, UDP-GlcNAc. Combined with genomic analysis of other superfamily members and site-specific mutagenesis of E. coli MurG, this structure sheds light on the molecular basis for both donor and acceptor selectivity for the superfamily. This structural analysis suggests that it will be possible to evolve new glycosyltransferases from prototypical superfamily members by varying two key loops while maintaining the overall architecture of the family and preserving key residues.

  • Organizational Affiliation

    Department of Chemistry, Princeton University, Princeton, NJ 08540, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
UDP-N-acetylglucosamine--N-acetylmuramyl-(pentapeptide) pyrophosphoryl-undecaprenol N-acetylglucosamine transferase
A, B
364Escherichia coliMutation(s): 0 
Gene Names: MURG OR B0090
EC: 2.4.1
Membrane Entity: Yes 
Find proteins for P17443 (Escherichia coli (strain K12))
Explore P17443 
Go to UniProtKB:  P17443
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP17443
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.50 Å
  • R-Value Free: 0.283 
  • R-Value Work: 0.226 
  • R-Value Observed: 0.226 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.703α = 90
b = 83.651β = 90
c = 146.245γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-02-11
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Non-polymer description, Version format compliance
  • Version 1.3: 2023-08-16
    Changes: Data collection, Database references, Derived calculations, Refinement description