3I4X

Crystal structure of the dimethylallyl tryptophan synthase FgaPT2 from Aspergillus fumigatus in complex with Trp and DMSPP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.149 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The structure of dimethylallyl tryptophan synthase reveals a common architecture of aromatic prenyltransferases in fungi and bacteria

Metzger, U.Schall, C.Zocher, G.Unsoeld, I.Stec, E.Li, S.-M.Heide, L.Stehle, T.

(2009) Proc.Natl.Acad.Sci.USA 106: 14309-14314

  • DOI: 10.1073/pnas.0904897106
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Ergot alkaloids are toxins and important pharmaceuticals that are produced biotechnologically on an industrial scale. The first committed step of ergot alkaloid biosynthesis is catalyzed by dimethylallyl tryptophan synthase (DMATS; EC 2.5.1.34). Orth ...

    Ergot alkaloids are toxins and important pharmaceuticals that are produced biotechnologically on an industrial scale. The first committed step of ergot alkaloid biosynthesis is catalyzed by dimethylallyl tryptophan synthase (DMATS; EC 2.5.1.34). Orthologs of DMATS are found in many fungal genomes. We report here the x-ray structure of DMATS, determined at a resolution of 1.76 A. A complex of DMATS from Aspergillus fumigatus with its aromatic substrate L-tryptophan and with an analogue of its isoprenoid substrate dimethylallyl diphosphate reveals the structural basis of this enzyme-catalyzed Friedel-Crafts reaction, which shows strict regiospecificity for position 4 of the indole nucleus of tryptophan as well as unusual independence of the presence of Mg(2+) ions. The 3D structure of DMATS belongs to a rare beta/alpha barrel fold, called prenyltransferase barrel, that was recently discovered in a small group of bacterial enzymes with no sequence similarity to DMATS. These bacterial enzymes catalyze the prenylation of aromatic substrates in the biosynthesis of secondary metabolites (i.e., a reaction similar to that of DMATS).


    Organizational Affiliation

    Pharmazeutisches Institut, Universität Tübingen, 72076 Tübingen, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tryptophan dimethylallyltransferase
A, B
465Neosartorya fumigata (strain ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100)Mutation(s): 0 
Gene Names: dmaW (fgaPT2)
EC: 2.5.1.34
Find proteins for Q50EL0 (Neosartorya fumigata (strain ATCC MYA-4609 / Af293 / CBS 101355 / FGSC A1100))
Go to UniProtKB:  Q50EL0
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

Download SDF File 
Download CCD File 
A
GLYCEROL
GLYCERIN; PROPANE-1,2,3-TRIOL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
DST
Query on DST

Download SDF File 
Download CCD File 
A, B
DIMETHYLALLYL S-THIOLODIPHOSPHATE
C5 H14 O6 P2 S
UWSFTDFHOGCIEL-UHFFFAOYSA-N
 Ligand Interaction
TRP
Query on TRP

Download SDF File 
Download CCD File 
A, B
TRYPTOPHAN
C11 H12 N2 O2
QIVBCDIJIAJPQS-VIFPVBQESA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.149 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 79.070α = 90.00
b = 97.850β = 90.00
c = 125.190γ = 90.00
Software Package:
Software NamePurpose
XDSdata scaling
REFMACrefinement
REFMACphasing
PDB_EXTRACTdata extraction
XSCALEdata scaling
XDSdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-09-01
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Non-polymer description, Version format compliance