2ROQ

Solution Structure of the thiolation-thioesterase di-domain of enterobactin synthetase component F


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Dynamic thiolation-thioesterase structure of a non-ribosomal peptide synthetase

Frueh, D.P.Arthanari, H.Koglin, A.Vosburg, D.A.Bennett, A.E.Walsh, C.T.Wagner, G.

(2008) Nature 454: 903-906

  • DOI: 10.1038/nature07162

  • PubMed Abstract: 
  • Non-ribosomal peptide synthetases (NRPS) and polyketide synthases (PKS) produce numerous secondary metabolites with various therapeutic/antibiotic properties. Like fatty acid synthases (FAS), these enzymes are organized in modular assembly lines in w ...

    Non-ribosomal peptide synthetases (NRPS) and polyketide synthases (PKS) produce numerous secondary metabolites with various therapeutic/antibiotic properties. Like fatty acid synthases (FAS), these enzymes are organized in modular assembly lines in which each module, made of conserved domains, incorporates a given monomer unit into the growing chain. Knowledge about domain or module interactions may enable reengineering of this assembly line enzymatic organization and open avenues for the design of new bioactive compounds with improved therapeutic properties. So far, little structural information has been available on how the domains interact and communicate. This may be because of inherent interdomain mobility hindering crystallization, or because crystallized molecules may not represent the active domain orientations. In solution, the large size and internal dynamics of multidomain fragments (>35 kilodaltons) make structure determination by nuclear magnetic resonance a challenge and require advanced technologies. Here we present the solution structure of the apo-thiolation-thioesterase (T-TE) di-domain fragment of the Escherichia coli enterobactin synthetase EntF NRPS subunit. In the holoenzyme, the T domain carries the growing chain tethered to a 4'-phosphopantetheine whereas the TE domain catalyses hydrolysis and cyclization of the iron chelator enterobactin. The T-TE di-domain forms a compact but dynamic structure with a well-defined domain interface; the two active sites are at a suitable distance for substrate transfer from T to TE. We observe extensive interdomain and intradomain motions for well-defined regions and show that these are modulated by interactions with proteins that participate in the biosynthesis. The T-TE interaction described here provides a model for NRPS, PKS and FAS function in general as T-TE-like di-domains typically catalyse the last step in numerous assembly-line chain-termination machineries.


    Organizational Affiliation

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, USA. dominique_frueh@hms.harvard.edu




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Enterobactin synthetase component F
A
343Escherichia coli (strain K12)Mutation(s): 1 
Gene Names: entF
EC: 2.7.7.-
Find proteins for P11454 (Escherichia coli (strain K12))
Go to UniProtKB:  P11454
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 
  • Olderado: 2ROQ Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-08-12
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance