1AD1

DIHYDROPTEROATE SYNTHETASE (APO FORM) FROM STAPHYLOCOCCUS AUREUS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.159 
  • R-Value Observed: 0.159 

wwPDB Validation   3D Report Full Report


This is version 1.3 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: https://doi.org/10.1006/jmbi.1997.0944
  • Primary Citation of Related Structures:  
    1AD1, 1AD4

  • 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 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:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
DIHYDROPTEROATE SYNTHETASE
A, B
266Staphylococcus aureusMutation(s): 0 
EC: 2.5.1.15
UniProt
Find proteins for O05701 (Staphylococcus aureus)
Explore O05701 
Go to UniProtKB:  O05701
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupO05701
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.218 
  • R-Value Work: 0.159 
  • R-Value Observed: 0.159 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 64.47α = 90
b = 42.19β = 106.33
c = 101.32γ = 90
Software Package:
Software NamePurpose
X-PLORrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-04-29
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2024-02-07
    Changes: Data collection, Database references, Derived calculations, Other