crystal structure of phosphoglucosamine mutase from B. anthracis

Experimental Data Snapshot

  • Resolution: 2.70 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.218 

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Crystal Structure of Bacillus anthracis Phosphoglucosamine Mutase, an Enzyme in the Peptidoglycan Biosynthetic Pathway.

Mehra-Chaudhary, R.Mick, J.Beamer, L.J.

(2011) J Bacteriol 193: 4081-4087

  • DOI: https://doi.org/10.1128/JB.00418-11
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Phosphoglucosamine mutase (PNGM) is an evolutionarily conserved bacterial enzyme that participates in the cytoplasmic steps of peptidoglycan biosynthesis. As peptidoglycan is essential for bacterial survival and is absent in humans, enzymes in this pathway have been the focus of intensive inhibitor design efforts. Many aspects of the structural biology of the peptidoglycan pathway have been elucidated, with the exception of the PNGM structure. We present here the crystal structure of PNGM from the human pathogen and bioterrorism agent Bacillus anthracis. The structure reveals key residues in the large active site cleft of the enzyme which likely have roles in catalysis and specificity. A large conformational change of the C-terminal domain of PNGM is observed when comparing two independent molecules in the crystal, shedding light on both the apo- and ligand-bound conformers of the enzyme. Crystal packing analyses and dynamic light scattering studies suggest that the enzyme is a dimer in solution. Multiple sequence alignments show that residues in the dimer interface are conserved, suggesting that many PNGM enzymes adopt this oligomeric state. This work lays the foundation for the development of inhibitors for PNGM enzymes from human pathogens.

  • Organizational Affiliation

    Biochemistry Department, University of Missouri, Columbia, MO 65211, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Phosphoglucosamine mutase
A, B
469Bacillus anthracisMutation(s): 0 
Gene Names: BAS0158BA_0157GBAA_0157glmM
Find proteins for Q81VN7 (Bacillus anthracis)
Explore Q81VN7 
Go to UniProtKB:  Q81VN7
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ81VN7
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.70 Å
  • R-Value Free: 0.281 
  • R-Value Work: 0.214 
  • R-Value Observed: 0.218 
  • Space Group: P 32 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.064α = 90
b = 86.064β = 90
c = 266.844γ = 120
Software Package:
Software NamePurpose
d*TREKdata reduction
d*TREKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-08-24
    Type: Initial release
  • Version 1.1: 2023-09-06
    Changes: Data collection, Database references, Derived calculations, Refinement description