1EE0

2-PYRONE SYNTHASE COMPLEXED WITH ACETOACETYL-COA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.189 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural control of polyketide formation in plant-specific polyketide synthases.

Jez, J.M.Austin, M.B.Ferrer, J.Bowman, M.E.Schroder, J.Noel, J.P.

(2000) Chem.Biol. 7: 919-930


  • PubMed Abstract: 
  • Polyketide synthases (PKSs) generate molecular diversity by utilizing different starter molecules and by controlling the final length of the polyketide. Although exploitation of this mechanistic variability has produced novel polyketides, the structu ...

    Polyketide synthases (PKSs) generate molecular diversity by utilizing different starter molecules and by controlling the final length of the polyketide. Although exploitation of this mechanistic variability has produced novel polyketides, the structural foundation of this versatility is unclear. Plant-specific PKSs are essential for the biosynthesis of anti-microbial phytoalexins, anthocyanin floral pigments, and inducers of Rhizobium nodulation genes. 2-Pyrone synthase (2-PS) and chalcone synthase (CHS) are plant-specific PKSs that share 74% amino acid sequence identity. 2-PS forms the triketide methylpyrone from an acetyl-CoA starter molecule and two malonyl-CoAs. CHS uses a p-coumaroyl-CoA starter molecule and three malonyl-CoAs to produce the tetraketide chalcone. Our goal was to elucidate the molecular basis of starter molecule selectivity and control of polyketide length in this class of PKS.


    Organizational Affiliation

    Structural Biology Laboratory, The Salk Institute for Biological Studies, La Jolla, CA 92037, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
2-PYRONE SYNTHASE
A, B
402Gerbera hybridaMutation(s): 0 
Gene Names: 2PS (CHS2)
EC: 2.3.1.-
Find proteins for P48391 (Gerbera hybrida)
Go to UniProtKB:  P48391
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CAA
Query on CAA

Download SDF File 
Download CCD File 
A, B
ACETOACETYL-COENZYME A
C25 H40 N7 O18 P3 S
OJFDKHTZOUZBOS-CITAKDKDSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSD
Query on CSD
A, B
L-PEPTIDE LINKINGC3 H7 N O4 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.05 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.189 
  • Space Group: P 31 2 1
Unit Cell:
Length (Å)Angle (°)
a = 83.406α = 90.00
b = 83.406β = 90.00
c = 240.625γ = 120.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
REFMACrefinement
DENZOdata reduction
EPMRphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2001-01-31
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance