3Q82

Meropenem acylated BlaR1 sensor domain from Staphylococcus aureus


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Lysine Nzeta-decarboxylation switch and activation of the beta-lactam sensor domain of BlaR1 protein of methicillin-resistant Staphylococcus aureus.

Borbulevych, O.Kumarasiri, M.Wilson, B.Llarrull, L.I.Lee, M.Hesek, D.Shi, Q.Peng, J.Baker, B.M.Mobashery, S.

(2011) J.Biol.Chem. 286: 31466-31472

  • DOI: 10.1074/jbc.M111.252189
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The integral membrane protein BlaR1 of methicillin-resistant Staphylococcus aureus senses the presence of β-lactam antibiotics in the milieu and transduces the information to the cytoplasm, where the biochemical events that unleash induction of antib ...

    The integral membrane protein BlaR1 of methicillin-resistant Staphylococcus aureus senses the presence of β-lactam antibiotics in the milieu and transduces the information to the cytoplasm, where the biochemical events that unleash induction of antibiotic resistance mechanisms take place. We report herein by two-dimensional and three-dimensional NMR experiments of the sensor domain of BlaR1 in solution and by determination of an x-ray structure for the apo protein that Lys-392 of the antibiotic-binding site is posttranslationally modified by N(ζ)-carboxylation. Additional crystallographic and NMR data reveal that on acylation of Ser-389 by antibiotics, Lys-392 experiences N(ζ)-decarboxylation. This unique process, termed the lysine N(ζ)-decarboxylation switch, arrests the sensor domain in the activated ("on") state, necessary for signal transduction and all the subsequent biochemical processes. We present structural information on how this receptor activation process takes place, imparting longevity to the antibiotic-receptor complex that is needed for the induction of the antibiotic-resistant phenotype in methicillin-resistant S. aureus.


    Organizational Affiliation

    Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, Indiana 46556, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Beta-lactamase regulatory protein BlaR1
A, B
252Staphylococcus aureusMutation(s): 0 
Gene Names: blaR1
Find proteins for P18357 (Staphylococcus aureus)
Go to UniProtKB:  P18357
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

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

Download SDF File 
Download CCD File 
A, B
(4R,5S)-3-{[(3S,5S)-5-(dimethylcarbamoyl)pyrrolidin-3-yl]sulfanyl}-5-[(2S,3R)-3-hydroxy-1-oxobutan-2-yl]-4-methyl-4,5-dihydro-1H-pyrrole-2-carboxylic acid
Meropenem, bound form
C17 H27 N3 O5 S
DYQHXZPAIVAJRU-HTXLXMOSSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.1 Å
  • R-Value Free: 0.234 
  • R-Value Work: 0.183 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 46.801α = 90.00
b = 108.087β = 108.98
c = 56.451γ = 90.00
Software Package:
Software NamePurpose
CrystalCleardata collection
MOLREPphasing
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
REFMACrefinement
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-07-20
    Type: Initial release
  • Version 1.1: 2012-05-16
    Type: Non-polymer description
  • Version 1.2: 2013-01-09
    Type: Database references