1EYN

Structure of mura liganded with the extrinsic fluorescence probe ANS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.180 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural basis for the interaction of the fluorescence probe 8-anilino-1-naphthalene sulfonate (ANS) with the antibiotic target MurA.

Schonbrunn, E.Eschenburg, S.Luger, K.Kabsch, W.Amrhein, N.

(2000) Proc.Natl.Acad.Sci.USA 97: 6345-6349

  • DOI: 10.1073/pnas.120120397

  • PubMed Abstract: 
  • The extrinsic fluorescence dye 8-anilino-1-naphthalene sulfonate (ANS) is widely used for probing conformational changes in proteins, yet no detailed structure of ANS bound to any protein has been reported so far. ANS has been successfully used to mo ...

    The extrinsic fluorescence dye 8-anilino-1-naphthalene sulfonate (ANS) is widely used for probing conformational changes in proteins, yet no detailed structure of ANS bound to any protein has been reported so far. ANS has been successfully used to monitor the induced-fit mechanism of MurA [UDPGlcNAc enolpyruvyltransferase (EC )], an essential enzyme for bacterial cell wall biosynthesis. We have solved the crystal structure of the ANS small middle dotMurA complex at 1.7-A resolution. ANS binds at an originally solvent-exposed region near Pro-112 and induces a major restructuring of the loop Pro-112-Pro-121, such that a specific binding site emerges. The fluorescence probe is sandwiched between the strictly conserved residues Arg-91, Pro-112, and Gly-113. Substrate binding to MurA is accompanied by large movements especially of the loop and Arg-91, which explains why ANS is an excellent sensor of conformational changes during catalysis of this pharmaceutically important enzyme.


    Related Citations: 
    • Comparative X-ray Analysis of the Un-liganded Fosfomycin-Target MurA
      Eschenburg, S.,Schonbrunn, E.
      (2000) Proteins 40: 290
    • Role of the Loop Containing Residue 115 in the Induced-fit Mechanism of the Bacterial Cell Wall Biosynthetic Enzyme MurA
      Schonbrunn, E.,Eschenburg, S.,Krekel, F.,Luger, K.,Amrhein, N.
      (2000) Biochemistry 39: 2164


    Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Colorado State University, Fort Collins, CO 80523, USA. eschoenb@eagle.cc.ukans.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
UDP-N-ACETYLGLUCOSAMINE 1-CARBOXYVINYLTRANSFERASE
A
419Enterobacter cloacae subsp. cloacae (strain ATCC 13047 / DSM 30054 / NBRC 13535 / NCDC 279-56)Gene Names: murA (murZ)
EC: 2.5.1.7
Find proteins for P33038 (Enterobacter cloacae subsp. cloacae (strain ATCC 13047 / DSM 30054 / NBRC 13535 / NCDC 279-56))
Go to UniProtKB:  P33038
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GOL
Query on GOL

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

Download SDF File 
Download CCD File 
A
8-ANILINO-1-NAPHTHALENE SULFONATE
C16 H13 N O3 S
FWEOQOXTVHGIFQ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
IAS
Query on IAS
A
L-beta-peptide, C-gamma linkingC4 H7 N O4

--

External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
2ANKd: 40800 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.210 
  • R-Value Work: 0.180 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 62.100α = 90.00
b = 66.600β = 90.00
c = 107.800γ = 90.00
Software Package:
Software NamePurpose
CNSphasing
SCALEPACKdata scaling
CNSrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-06-09
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-07-27
    Type: Database references, Derived calculations, Non-polymer description