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: 170.74 kDa 
• Atom Count: 12440 
• Residue Count: 1624 
• Unique protein chains: 1

1DD8

CRYSTAL STRUCTURE OF BETA-KETOACYL-[ACYL CARRIER PROTEIN] SYNTHASE I FROM ESCHERICHIA COLI

• DOI: 10.2210/pdb1DD8/pdb

• Classification: TRANSFERASE
• Organism(s): Escherichia coli
• Mutation(s): No 


• Deposited: 1999-11-09 Released: 1999-11-18 
• Deposition Author(s): Olsen, J.G., Kadziola, A., von Wettstein-Knowles, P., Siggaard-Andersen, M., Lindquist, Y., Larsen, S.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.219 
• R-Value Work: 0.188 

Literature

The X-ray crystal structure of beta-ketoacyl [acyl carrier protein] synthase I.

Olsen, J.G., Kadziola, A., von Wettstein-Knowles, P., Siggaard-Andersen, M., Lindquist, Y., Larsen, S.

(1999) FEBS Lett 460: 46-52

• PubMed: 10571059 
• DOI: 10.1016/s0014-5793(99)01303-4
• Structures With Same Primary Citation


• PubMed Abstract: 
  

The crystal structure of the fatty acid elongating enzyme beta-ketoacyl [acyl carrier protein] synthase I (KAS I) from Escherichia coli has been determined to 2.3 A resolution by molecular replacement using the recently solved crystal structure of KAS II as a search model. The crystal contains two independent dimers in the asymmetric unit. KAS I assumes the thiolase alpha(beta)alpha(beta)alpha fold. Electrostatic potential distribution reveals an acyl carrier protein docking site and a presumed substrate binding pocket was detected extending the active site. Both subunits contribute to each substrate binding site in the dimer.

---

Organizational Affiliation: 

Centre for Crystallographic Studies, University of Copenhagen, Denmark.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
BETA-KETOACYL [ACYL CARRIER PROTEIN] SYNTHASE I	A, B, C, D	406	Escherichia coli	Mutation(s): 0  EC: 2.3.1.41
Find proteins for P0A953 (Escherichia coli (strain K12)) Explore P0A953  Go to UniProtKB:  P0A953

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.219 
• R-Value Work: 0.188 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 59.62	α = 90
b = 142.71	β = 90
c = 213.46	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
DENZO	data reduction
SCALEPACK	data scaling
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-11-09 
• Released Date: 1999-11-18 
Deposition Author(s): Olsen, J.G., Kadziola, A., von Wettstein-Knowles, P., Siggaard-Andersen, M., Lindquist, Y., Larsen, S.

Revision History 

• Version 1.0: 1999-11-18
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2018-01-31
  Changes: Experimental preparation