2FQ1

Crystal structure of the two-domain non-ribosomal peptide synthetase EntB containing isochorismate lyase and aryl-carrier protein domains


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.186 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the EntB multidomain nonribosomal peptide synthetase and functional analysis of its interaction with the EntE adenylation domain.

Drake, E.J.Nicolai, D.A.Gulick, A.M.

(2006) Chem.Biol. 13: 409-419

  • DOI: 10.1016/j.chembiol.2006.02.005

  • PubMed Abstract: 
  • Nonribosomal peptide synthetases are modular proteins that operate in an assembly line fashion to bind, modify, and link amino acids. In the E. coli enterobactin NRPS system, the EntE adenylation domain catalyzes the transfer of a molecule of 2,3-dih ...

    Nonribosomal peptide synthetases are modular proteins that operate in an assembly line fashion to bind, modify, and link amino acids. In the E. coli enterobactin NRPS system, the EntE adenylation domain catalyzes the transfer of a molecule of 2,3-dihydroxybenzoic acid to the pantetheine cofactor of EntB. We present here the crystal structure of the EntB protein that contains an N-terminal isochorismate lyase domain that functions in the synthesis of 2,3-dihydroxybenzoate and a C-terminal carrier protein domain. Functional analysis showed that the EntB-EntE interaction was surprisingly tolerant of a number of point mutations on the surface of EntB and EntE. Mutational studies on EntE support our previous hypothesis that members of the adenylate-forming family of enzymes adopt two distinct conformations to catalyze the two-step reactions.


    Organizational Affiliation

    Hauptman-Woodward Medical Research Institute, 700 Ellicott Street, Buffalo, New York 14203, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Isochorismatase
A, B
287Escherichia coli (strain K12)Mutation(s): 0 
Gene Names: entB (entG)
EC: 6.3.2.14
Find proteins for P0ADI4 (Escherichia coli (strain K12))
Go to UniProtKB:  P0ADI4
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A, B
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
EDO
Query on EDO

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Download CCD File 
A
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
MG
Query on MG

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Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.186 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 50.889α = 90.00
b = 82.331β = 90.00
c = 164.730γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
PHASERphasing
DENZOdata reduction
PDB_EXTRACTdata extraction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-05-02
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Version format compliance