4BJU

Genetic and structural validation of Aspergillus fumigatus N- acetylphosphoglucosamine mutase as an antifungal target


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.220 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Genetic and Structural Validation of Aspergillus Fumigatus N-Acetylphosphoglucosamine Mutase as an Antifungal Target.

Fang, W.Du, T.Raimi, O.G.Hurtado Guerrero, R.Marino, K.Ibrahim, A.F.M.Albarbarawi, O.Ferguson, M.A.J.Jin, C.Van Aalten, D.M.F.

(2013) Biosci Rep 33: 63

  • DOI: 10.1042/BSR20130053
  • Primary Citation of Related Structures:  
    4BJU

  • PubMed Abstract: 
  • Aspergillus fumigatus is the causative agent of IA (invasive aspergillosis) in immunocompromised patients. It possesses a cell wall composed of chitin, glucan and galactomannan, polymeric carbohydrates synthesized by processive glycosyltransferases from intracellular sugar nucleotide donors ...

    Aspergillus fumigatus is the causative agent of IA (invasive aspergillosis) in immunocompromised patients. It possesses a cell wall composed of chitin, glucan and galactomannan, polymeric carbohydrates synthesized by processive glycosyltransferases from intracellular sugar nucleotide donors. Here we demonstrate that A. fumigatus possesses an active AfAGM1 (A. fumigatus N-acetylphosphoglucosamine mutase), a key enzyme in the biosynthesis of UDP (uridine diphosphate)-GlcNAc (N-acetylglucosamine), the nucleotide sugar donor for chitin synthesis. A conditional agm1 mutant revealed the gene to be essential. Reduced expression of agm1 resulted in retarded cell growth and altered cell wall ultrastructure and composition. The crystal structure of AfAGM1 revealed an amino acid change in the active site compared with the human enzyme, which could be exploitable in the design of selective inhibitors. AfAGM1 inhibitors were discovered by high-throughput screening, inhibiting the enzyme with IC50s in the low μM range. Together, these data provide a platform for the future development of AfAGM1 inhibitors with antifungal activity.


    Organizational Affiliation

    *Division of Molecular Microbiology, University of Dundee, DD1 5EH, Scotland, U.K.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
N-ACETYLGLUCOSAMINE-PHOSPHATE MUTASEA, B549Aspergillus fumigatusMutation(s): 0 
EC: 5.4.2.3
UniProt
Find proteins for B0XPI4 (Neosartorya fumigata (strain CEA10 / CBS 144.89 / FGSC A1163))
Explore B0XPI4 
Go to UniProtKB:  B0XPI4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupB0XPI4
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download Ideal Coordinates CCD File 
C [auth A],
D [auth B]
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
SEP
Query on SEP
A, B L-PEPTIDE LINKINGC3 H8 N O6 PSER
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.277 
  • R-Value Work: 0.218 
  • R-Value Observed: 0.220 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.7α = 90
b = 86.57β = 90
c = 185.42γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
iMOSFLMdata reduction
SCALEPACKdata scaling
CCP4Iphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-05-01
    Type: Initial release
  • Version 1.1: 2013-07-24
    Changes: Database references
  • Version 1.2: 2013-09-25
    Changes: Database references