4CAX

Crystal structure of Aspergillus fumigatus N-myristoyl transferase in complex with myristoyl CoA and a pyrazole sulphonamide ligand (DDD85646)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.224 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

N-Myristoyltransferase is a Cell Wall Target in Aspergillus Fumigatus.

Fang, W.Robinson, D.A.Raimi, O.G.Blair, D.E.Harrison, J.R.Lockhart, D.E.A.Torrie, L.S.Ruda, G.F.Wyatt, P.G.Gilbert, I.H.Van Aalten, D.M.F.

(2015) Acs Chem.Biol. 10: 1425

  • DOI: 10.1021/cb5008647
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Treatment of filamentous fungal infections relies on a limited repertoire of antifungal agents. Compounds possessing novel modes of action are urgently required. N-myristoylation is a ubiquitous modification of eukaryotic proteins. The enzyme N-myris ...

    Treatment of filamentous fungal infections relies on a limited repertoire of antifungal agents. Compounds possessing novel modes of action are urgently required. N-myristoylation is a ubiquitous modification of eukaryotic proteins. The enzyme N-myristoyltransferase (NMT) has been considered a potential therapeutic target in protozoa and yeasts. Here, we show that the filamentous fungal pathogen Aspergillus fumigatus possesses an active NMT enzyme that is essential for survival. Surprisingly, partial repression of the gene revealed downstream effects of N-myristoylation on cell wall morphology. Screening a library of inhibitors led to the discovery of a pyrazole sulphonamide compound that inhibits the enzyme and is fungicidal under partially repressive nmt conditions. Together with a crystallographic complex showing the inhibitor binding in the peptide substrate pocket, we provide evidence of NMT being a potential drug target in A. fumigatus.


    Organizational Affiliation

    †Division of Molecular Microbiology, ‡Division of Biological Chemistry and Drug Discovery, §MRC Protein Phosphorylation and Ubiquitylation Unit, College of Life Sciences, University of Dundee, Dundee, DD1 5EH, United Kingdom.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
GLYCYLPEPTIDE N-TETRADECANOYLTRANSFERASE
A
411Neosartorya fumigata (strain ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100)Mutation(s): 0 
Gene Names: nmt1
EC: 2.3.1.97
Find proteins for Q9UVX3 (Neosartorya fumigata (strain ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100))
Go to UniProtKB:  Q9UVX3
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MYA
Query on MYA

Download SDF File 
Download CCD File 
A
TETRADECANOYL-COA
MYRISTOYL-COA
C35 H62 N7 O17 P3 S
DUAFKXOFBZQTQE-GLTUGWJXDB
 Ligand Interaction
646
Query on 646

Download SDF File 
Download CCD File 
A
2,6-dichloro-4-(2-piperazin-1-ylpyridin-4-yl)-N-(1,3,5-trimethyl-1H-pyrazol-4-yl)benzenesulfonamide
C21 H24 Cl2 N6 O2 S
XMBSZPZJLPTFMV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.224 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 50.985α = 90.00
b = 58.576β = 90.00
c = 152.528γ = 90.00
Software Package:
Software NamePurpose
MOLREPphasing
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-09-17
    Type: Initial release
  • Version 1.1: 2016-03-23
    Type: Database references