2K2Q

complex structure of the external thioesterase of the Surfactin-synthetase with a carrier domain


Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 18 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Structural basis for the selectivity of the external thioesterase of the surfactin synthetase.

Koglin, A.Lohr, F.Bernhard, F.Rogov, V.V.Frueh, D.P.Strieter, E.R.Mofid, M.R.Guntert, P.Wagner, G.Walsh, C.T.Marahiel, M.A.Dotsch, V.

(2008) Nature 454: 907-911

  • DOI: 10.1038/nature07161
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Non-ribosomal peptide synthetases (NRPS) and polyketide synthases (PKS) found in bacteria, fungi and plants use two different types of thioesterases for the production of highly active biological compounds. Type I thioesterases (TEI) catalyse the rel ...

    Non-ribosomal peptide synthetases (NRPS) and polyketide synthases (PKS) found in bacteria, fungi and plants use two different types of thioesterases for the production of highly active biological compounds. Type I thioesterases (TEI) catalyse the release step from the assembly line of the final product where it is transported from one reaction centre to the next as a thioester linked to a 4'-phosphopantetheine (4'-PP) cofactor that is covalently attached to thiolation (T) domains. The second enzyme involved in the synthesis of these secondary metabolites, the type II thioesterase (TEII), is a crucial repair enzyme for the regeneration of functional 4'-PP cofactors of holo-T domains of NRPS and PKS systems. Mispriming of 4'-PP cofactors by acetyl- and short-chain acyl-residues interrupts the biosynthetic system. This repair reaction is very important, because roughly 80% of CoA, the precursor of the 4'-PP cofactor, is acetylated in bacteria. Here we report the three-dimensional structure of a type II thioesterase from Bacillus subtilis free and in complex with a T domain. Comparison with structures of TEI enzymes shows the basis for substrate selectivity and the different modes of interaction of TEII and TEI enzymes with T domains. Furthermore, we show that the TEII enzyme exists in several conformations of which only one is selected on interaction with its native substrate, a modified holo-T domain.


    Organizational Affiliation

    Institute of Biophysical Chemistry and Center for Biomolecular Magnetic Resonance and Cluster of Excellence Macromolecular Complexes (CEF), J.W.-Goethe University, 60438 Frankfurt am Main, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Tyrocidine synthetase 3 (Tyrocidine synthetase III)
A
82Brevibacillus parabrevisMutation(s): 0 
Gene Names: tycC
Find proteins for O30409 (Brevibacillus parabrevis)
Go to UniProtKB:  O30409
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Surfactin synthetase thioesterase subunit
B
242Bacillus subtilis (strain 168)Mutation(s): 0 
Gene Names: srfAD (srfA4)
EC: 3.1.2.-
Find proteins for Q08788 (Bacillus subtilis (strain 168))
Go to UniProtKB:  Q08788
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 200 
  • Conformers Submitted: 18 
  • Olderado: 2K2Q Olderado

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-12-09
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance
  • Version 1.2: 2016-10-19
    Type: Structure summary
  • Version 1.3: 2018-01-24
    Type: Structure summary