3EIX

Crystal structure of selenomethionine labelled Staphylococcus aureus lipoprotein, HtsA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.166 
  • R-Value Work: 0.129 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Characterization of staphyloferrin A biosynthetic and transport mutants in Staphylococcus aureus.

Beasley, F.C.Vines, E.D.Grigg, J.C.Zheng, Q.Liu, S.Lajoie, G.A.Murphy, M.E.Heinrichs, D.E.

(2009) Mol.Microbiol. 72: 947-963

  • DOI: 10.1111/j.1365-2958.2009.06698.x
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Iron is critical for virtually all forms of life. The production of high-affinity iron chelators, siderophores, and the subsequent uptake of iron-siderophore complexes are a common strategy employed by microorganisms to acquire iron. Staphylococcus a ...

    Iron is critical for virtually all forms of life. The production of high-affinity iron chelators, siderophores, and the subsequent uptake of iron-siderophore complexes are a common strategy employed by microorganisms to acquire iron. Staphylococcus aureus produces siderophores but genetic information underlying their synthesis and transport is limited. Previous work implicated the sbn operon in siderophore synthesis and the sirABC operon in uptake. Here we characterize a second siderophore biosynthetic locus in S. aureus; the locus consists of four genes (in strain Newman these open reading frames are designated NWMN_2079-2082) which, together, are responsible for the synthesis and export of staphyloferrin A, a polycarboxylate siderophore. While deletion of the NWMN_2079-2082 locus did not affect iron-restricted growth of S. aureus, strains bearing combined sbn and NWMN_2079-2082 locus deletions produced no detectable siderophore and demonstrated severely attenuated iron-restricted growth. Adjacent to NWMN_2079-2082 resides the htsABC operon, encoding an ABC transporter previously implicated in haem acquisition. We provide evidence here that HtsABC, along with the FhuC ATPase, is required for the uptake of staphyloferrin A. The crystal structure of apo-HtsA was determined and identified a large positively charged region in the substrate-binding pocket, in agreement with a role in binding of anionic staphyloferrin A.


    Organizational Affiliation

    Department of Microbiology and Immunology, University of Western Ontario, London, ON, Canada N6A 5C1.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
HtsA protein
A
296Staphylococcus aureus (strain N315)Mutation(s): 0 
Find proteins for A0A0H3JM89 (Staphylococcus aureus (strain N315))
Go to UniProtKB:  A0A0H3JM89
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.35 Å
  • R-Value Free: 0.166 
  • R-Value Work: 0.129 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 44.952α = 90.00
b = 43.645β = 100.57
c = 76.040γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
MOSFLMdata reduction
SOLVEphasing
SCALEPACKdata scaling
DENZOdata reduction
REFMACrefinement
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2009-05-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Source and taxonomy, Version format compliance
  • Version 1.2: 2017-10-25
    Type: Refinement description