3FTT

Crystal Structure of the galactoside O-acetyltransferase from Staphylococcus aureus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.187 
  • R-Value Work: 0.159 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Biophysical analysis of the putative acetyltransferase SACOL2570 from methicillin-resistant Staphylococcus aureus.

Luo, H.B.Knapik, A.A.Petkowski, J.J.Demas, M.Shumilin, I.A.Zheng, H.Chruszcz, M.Minor, W.

(2013) J.Struct.Funct.Genom. 14: 97-108

  • DOI: 10.1007/s10969-013-9158-6
  • Primary Citation of Related Structures:  3V4E

  • PubMed Abstract: 
  • Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of a myriad of insidious and intractable infections in humans, especially in patients with compromised immune systems and children. Here, we report the apo- and CoA-bound crystal str ...

    Methicillin-resistant Staphylococcus aureus (MRSA) is a major cause of a myriad of insidious and intractable infections in humans, especially in patients with compromised immune systems and children. Here, we report the apo- and CoA-bound crystal structures of a member of the galactoside acetyltransferase superfamily from methicillin-resistant S. aureus SACOL2570 which was recently shown to be down regulated in S. aureus grown in the presence of fusidic acid, an antibiotic used to treat MRSA infections. SACOL2570 forms a homotrimer in solution, as confirmed by small-angle X-ray scattering and dynamic light scattering. The protein subunit consists of an N-terminal alpha-helical domain connected to a C-terminal LβH domain. CoA binds in the active site formed by the residues from adjacent LβH domains. After determination of CoA-bound structure, molecular dynamics simulations were performed to model the binding of AcCoA. Binding of both AcCoA and CoA to SACOL2570 was verified by isothermal titration calorimetry. SACOL2570 most likely acts as an acetyltransferase, using AcCoA as an acetyl group donor and an as-yet-undetermined chemical moiety as an acceptor. SACOL2570 was recently used as a scaffold for mutations that lead the generation of cage-like assemblies, and has the potential to be used for the generation of more complex nanostructures.


    Organizational Affiliation

    Department of Molecular Physiology and Biological Physics, University of Virginia, 1340 Jefferson Park Avenue, Charlottesville, VA 22908, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Putative acetyltransferase SACOL2570
A
199Staphylococcus aureus (strain COL)EC: 2.3.1.-
Find proteins for Q5HCZ5 (Staphylococcus aureus (strain COL))
Go to UniProtKB:  Q5HCZ5
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 75.761α = 90.00
b = 75.761β = 90.00
c = 93.878γ = 120.00
Software Package:
Software NamePurpose
DMphasing
SHELXDphasing
MLPHAREphasing
DMmodel building
ARP/wARPmodel building
HKL-3000data reduction
CCP4model building
Cootmodel building
HKL-3000phasing
HKL-3000data collection
REFMACrefinement
CCP4phasing
RESOLVEphasing
SHELXEmodel building
RESOLVEmodel building
HKL-3000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Revision History 

  • Version 1.0: 2009-03-03
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2017-02-15
    Type: Database references
  • Version 1.3: 2017-11-01
    Type: Refinement description