1K4J

Crystal Structure of the Acyl-homoserinelactone Synthase EsaI Complexed with Rhenate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.216 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis and specificity of acyl-homoserine lactone signal production in bacterial quorum sensing.

Watson, W.T.Minogue, T.D.Val, D.L.von Bodman, S.B.Churchill, M.E.

(2002) Mol.Cell 9: 685-694

  • Primary Citation of Related Structures:  1KZF

  • PubMed Abstract: 
  • Synthesis and detection of acyl-homoserine lactones (AHLs) enables many gram-negative bacteria to engage in quorum sensing, an intercellular signaling mechanism that activates differentiation to virulent and biofilm lifestyles. The AHL synthases cata ...

    Synthesis and detection of acyl-homoserine lactones (AHLs) enables many gram-negative bacteria to engage in quorum sensing, an intercellular signaling mechanism that activates differentiation to virulent and biofilm lifestyles. The AHL synthases catalyze acylation of S-adenosyl-L-methionine by acyl-acyl carrier protein and lactonization of the methionine moiety to give AHLs. The crystal structure of the AHL synthase, EsaI, determined at 1.8 A resolution, reveals a remarkable structural similarity to the N-acetyltransferases and defines a common phosphopantetheine binding fold as the catalytic core. Critical residues responsible for catalysis and acyl chain specificity have been identified from a modeled substrate complex and verified through functional analysis in vivo. A mechanism for the N-acylation of S-adenosyl-L-methionine by 3-oxo-hexanoyl-acyl carrier protein is proposed.


    Related Citations: 
    • Crystallization and Rhenium MAD Phasing of the Acyl-homoserinelactone Synthase EsaI
      Watson, W.T.,Murphy, F.V.,Gould, T.A.,Jambeck, P.,Val, D.L.,Cronan, J.E.,Beck von Bodman, S.,Churchill, M.E.A.
      (2001) Acta Crystallogr.,Sect.D 57: 1945


    Organizational Affiliation

    Department of Pharmacology, The University of Colorado Health Sciences Center, 4200 E. Ninth Avenue, Denver, CO 80262, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
acyl-homoserinelactone synthase EsaI
A
230Pantoea stewartii subsp. stewartiiGene Names: esaI
EC: 2.3.1.184
Find proteins for P54656 (Pantoea stewartii subsp. stewartii)
Go to UniProtKB:  P54656
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
REO
Query on REO

Download SDF File 
Download CCD File 
A
PERRHENATE
O4 Re
WPWXHJFQOFOBAC-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.275 
  • R-Value Work: 0.216 
  • Space Group: P 43
Unit Cell:
Length (Å)Angle (°)
a = 66.390α = 90.00
b = 66.390β = 90.00
c = 47.325γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
DENZOdata reduction
RESOLVEphasing
SOLVEphasing
CNSrefinement
RESOLVEmodel building
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-04-17
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance