1AD4

DIHYDROPTEROATE SYNTHETASE COMPLEXED WITH OH-CH2-PTERIN-PYROPHOSPHATE FROM STAPHYLOCOCCUS AUREUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure and function of the dihydropteroate synthase from Staphylococcus aureus.

Hampele, I.C.D'Arcy, A.Dale, G.E.Kostrewa, D.Nielsen, J.Oefner, C.Page, M.G.Schonfeld, H.J.Stuber, D.Then, R.L.

(1997) J.Mol.Biol. 268: 21-30

  • DOI: 10.1006/jmbi.1997.0944
  • Primary Citation of Related Structures:  1AD1

  • PubMed Abstract: 
  • The gene encoding the dihydropteroate synthase of staphylococcus aureus has been cloned, sequenced and expressed in Escherichia coli. The protein has been purified for biochemical characterization and X-ray crystallographic studies. The enzyme is a d ...

    The gene encoding the dihydropteroate synthase of staphylococcus aureus has been cloned, sequenced and expressed in Escherichia coli. The protein has been purified for biochemical characterization and X-ray crystallographic studies. The enzyme is a dimer in solution, has a steady state kinetic mechanism that suggests random binding of the two substrates and half-site reactivity. The crystal structure of apo-enzyme and a binary complex with the substrate analogue hydroxymethylpterin pyrophosphate were determined at 2.2 A and 2.4 A resolution, respectively. The enzyme belongs to the group of "TIM-barrel" proteins and crystallizes as a non-crystallographic dimer. Only one molecule of the substrate analogue bound per dimer in the crystal. Sequencing of nine sulfonamide-resistant clinical isolates has shown that as many as 14 residues could be involved in resistance development. The residues are distributed over the surface of the protein, which defies a simple interpretation of their roles in resistance. Nevertheless, the three-dimensional structure of the substrate analogue binary complex could give important insight into the molecular mechanism of this enzyme.


    Organizational Affiliation

    F. Hoffmann-La Roche Ltd, Pharma Preclinical Research Department, Basel, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
DIHYDROPTEROATE SYNTHETASE
A, B
266Staphylococcus aureusGene Names: folP (dpsA)
EC: 2.5.1.15
Find proteins for O05701 (Staphylococcus aureus)
Go to UniProtKB:  O05701
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
K
Query on K

Download SDF File 
Download CCD File 
A, B
POTASSIUM ION
K
NPYPAHLBTDXSSS-UHFFFAOYSA-N
 Ligand Interaction
MN
Query on MN

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Download CCD File 
A, B
MANGANESE (II) ION
Mn
WAEMQWOKJMHJLA-UHFFFAOYSA-N
 Ligand Interaction
HH2
Query on HH2

Download SDF File 
Download CCD File 
A
6-HYDROXYMETHYLPTERIN-DIPHOSPHATE
[PTERIN-6-YL METHANYL]-PHOSPHONOPHOSPHATE
C7 H9 N5 O8 P2
AMDUVUKDRBIVAH-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Work: 0.176 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 65.748α = 90.00
b = 42.142β = 106.06
c = 99.040γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-04-29
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance