Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly 2  

 3D View: Structure | Electron Density

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 135.67 kDa 
• Atom Count: 10293 
• Residue Count: 1248 
• Unique protein chains: 1

1ZOW

Crystal Structure of S. aureus FabH, beta-ketoacyl carrier protein synthase III

• DOI: 10.2210/pdb1ZOW/pdb

• Classification: TRANSFERASE
• Organism(s): Staphylococcus aureus subsp. aureus MW2
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2005-05-15 Released: 2005-08-09 
• Deposition Author(s): Qiu, X., Choudhry, A.E., Janson, C.A., Grooms, M., Daines, R.A., Lonsdale, J.T., Khandekar, S.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.256 
• R-Value Work: 0.211 
• R-Value Observed: 0.211 

Literature

Crystal structure and substrate specificity of the beta-ketoacyl-acyl carrier protein synthase III (FabH) from Staphylococcus aureus.

Qiu, X., Choudhry, A.E., Janson, C.A., Grooms, M., Daines, R.A., Lonsdale, J.T., Khandekar, S.S.

(2005) Protein Sci 14: 2087-2094

• PubMed: 15987898 
• DOI: 10.1110/ps.051501605
• Primary Citation of Related Structures:  
  1ZOW


• PubMed Abstract: 
  

beta-Ketoacyl-ACP synthase III (FabH), an essential enzyme for bacterial viability, catalyzes the initiation of fatty acid elongation by condensing malonyl-ACP with acetyl-CoA. We have determined the crystal structure of FabH from Staphylococcus aureus, a Gram-positive human pathogen, to 2 A resolution. Although the overall structure of S. aureus FabH is similar to that of Escherichia coli FabH, the primer binding pocket in S. aureus FabH is significantly larger than that present in E. coli FabH. The structural differences, which agree with kinetic parameters, provide explanation for the observed varying substrate specificity for E. coli and S. aureus FabH. The rank order of activity of S. aureus FabH with various acyl-CoA primers was as follows: isobutyryl- > hexanoyl- > butyryl- > isovaleryl- > acetyl-CoA. The availability of crystal structure may aid in designing potent, selective inhibitors of S. aureus FabH.

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Organizational Affiliation: 

GlaxoSmithKline, King of Prussia, Pennsylvania 19406, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
3-oxoacyl-[acyl-carrier-protein] synthase III	A, B, C, D	313	Staphylococcus aureus subsp. aureus MW2	Mutation(s): 0  Gene Names: fabH, MW0865 EC: 2.3.1.41 (PDB Primary Data), 2.3.1.180 (UniProt)
Find proteins for Q8NXE2 (Staphylococcus aureus (strain MW2)) Explore Q8NXE2  Go to UniProtKB:  Q8NXE2

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.00 Å
• R-Value Free: 0.256 
• R-Value Work: 0.211 
• R-Value Observed: 0.211 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 63.9	α = 90
b = 93.6	β = 93.9
c = 110	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
AMoRE	phasing
CNS	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2005-05-15 
• Released Date: 2005-08-09 
Deposition Author(s): Qiu, X., Choudhry, A.E., Janson, C.A., Grooms, M., Daines, R.A., Lonsdale, J.T., Khandekar, S.S.

Revision History 

• Version 1.0: 2005-08-09
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Source and taxonomy, Version format compliance