4NA1

Crystal Structure of the second ketosynthase from the bacillaene polyketide synthase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.212 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

A close look at a ketosynthase from a trans-acyltransferase modular polyketide synthase.

Gay, D.C.Gay, G.Axelrod, A.J.Jenner, M.Kohlhaas, C.Kampa, A.Oldham, N.J.Piel, J.Keatinge-Clay, A.T.

(2014) Structure 22: 444-451

  • DOI: 10.1016/j.str.2013.12.016
  • Primary Citation of Related Structures:  
    4NA1, 4NA2, 4NA3

  • PubMed Abstract: 
  • The recently discovered trans-acyltransferase modular polyketide synthases catalyze the biosynthesis of a wide range of bioactive natural products in bacteria. Here we report the structure of the second ketosynthase from the bacillaene trans-acyltran ...

    The recently discovered trans-acyltransferase modular polyketide synthases catalyze the biosynthesis of a wide range of bioactive natural products in bacteria. Here we report the structure of the second ketosynthase from the bacillaene trans-acyltransferase polyketide synthase. This 1.95 Å resolution structure provides the highest resolution view available of a modular polyketide synthase ketosynthase and reveals a flanking subdomain that is homologous to an ordered linker in cis-acyltransferase modular polyketide synthases. The structure of the cysteine-to-serine mutant of the ketosynthase acylated by its natural substrate provides high-resolution details of how a native polyketide intermediate is bound and helps explain the basis of ketosynthase substrate specificity. The substrate range of the ketosynthase was further investigated by mass spectrometry.


    Organizational Affiliation

    Department of Molecular Biosciences, The University of Texas at Austin, 1 University Station A5300, Austin, TX 78712, USA; Department of Chemistry, The University of Texas at Austin, 1 University Station A5300, Austin, TX 78712, USA. Electronic address: adriankc@utexas.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Polyketide synthase PksJAB637Bacillus subtilis subsp. subtilis str. 168Mutation(s): 0 
Gene Names: pksJpksKBSU17180
EC: 2.3.1
Find proteins for P40806 (Bacillus subtilis (strain 168))
Explore P40806 
Go to UniProtKB:  P40806
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.210 
  • R-Value Observed: 0.212 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 77.862α = 90
b = 113.089β = 107
c = 96.48γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
PHASESphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-02-19
    Type: Initial release
  • Version 1.1: 2014-03-26
    Changes: Database references