4BMA

structural of Aspergillus fumigatus UDP-N-acetylglucosamine pyrophosphorylase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.08 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.215 

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 Udp-N-Acetylglucosamine Pyrophosphorylase as an Antifungal Target.

Fang, W.Du, T.Raimi, O.G.Hurtado-Guerrero, R.Urbaniak, M.D.Ibrahim, A.F.Ferguson, M.A.Jin, C.Van Aalten, D.M.

(2013) Mol Microbiol 89: 479

  • DOI: 10.1111/mmi.12290
  • Primary Citation of Related Structures:  
    4BMA

  • PubMed Abstract: 
  • The sugar nucleotide UDP-N-acetylglucosamine (UDP-GlcNAc) is an essential metabolite in both prokaryotes and eukaryotes. In fungi, it is the precursor for the synthesis of chitin, an essential component of the fungal cell wall. UDP-N-acetylglucosamine pyrophosphorylase (UAP) is the final enzyme in eukaryotic UDP-GlcNAc biosynthesis, converting UTP and N-acetylglucosamine-1-phosphate (GlcNAc-1P) to UDP-GlcNAc ...

    The sugar nucleotide UDP-N-acetylglucosamine (UDP-GlcNAc) is an essential metabolite in both prokaryotes and eukaryotes. In fungi, it is the precursor for the synthesis of chitin, an essential component of the fungal cell wall. UDP-N-acetylglucosamine pyrophosphorylase (UAP) is the final enzyme in eukaryotic UDP-GlcNAc biosynthesis, converting UTP and N-acetylglucosamine-1-phosphate (GlcNAc-1P) to UDP-GlcNAc. As such, this enzyme may provide an attractive target against pathogenic fungi. Here, we demonstrate that the fungal pathogen Aspergillus fumigatus possesses an active UAP (AfUAP1) that shows selectivity for GlcNAc-1P as the phosphosugar substrate. A conditional mutant, constructed by replacing the native promoter of the A. fumigatus uap1 gene with the Aspergillus nidulans alcA promoter, revealed that uap1 is essential for cell survival and important for cell wall synthesis and morphogenesis. The crystal structure of AfUAP1 was determined and revealed exploitable differences in the active site compared with the human enzyme. Thus AfUAP1 could represent a novel antifungal target and this work will assist the future discovery of small molecule inhibitors against this enzyme.


    Organizational Affiliation

    Division of Molecular Microbiology, College of Life Sciences, University of Dundee, Dundee, DD1 5EH, Scotland, UK.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
UDP-N-ACETYLGLUCOSAMINE PYROPHOSPHORYLASE AB509Aspergillus fumigatusMutation(s): 0 
EC: 2.7.7.23
Find proteins for Q4WAR0 (Neosartorya fumigata (strain ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100))
Explore Q4WAR0 
Go to UniProtKB:  Q4WAR0
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download Ideal Coordinates CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.08 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.215 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 55.649α = 90
b = 139.744β = 90
c = 144.744γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2013-05-15
    Type: Initial release
  • Version 1.1: 2013-06-26
    Changes: Database references
  • Version 1.2: 2013-08-07
    Changes: Database references