Biological Assembly 1  

 3D View: Structure | Electron Density

Global Symmetry: Dihedral - D3  (3D View)
Global Stoichiometry: Hetero 18-mer - A6B6C6 

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

Macromolecule Content

• Total Structure Weight: 1104.55 kDa 
• Atom Count: 71862 
• Modelled Residue Count: 11262 
• Deposited Residue Count: 11277 
• Unique protein chains: 3

2PFF

Structural Insights of Yeast Fatty Acid Synthase

• DOI: 10.2210/pdb2PFF/pdb

• Classification: TRANSFERASE
• Organism(s): Saccharomyces cerevisiae
• Mutation(s): No 


• Deposited: 2007-04-04 Released: 2007-07-10 
• Deposition Author(s): Xiong, Y., Lomakin, I.B., Steitz, T.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 4.00 Å
• R-Value Free: 0.346 
• R-Value Work: 0.319 

Literature

Structural Insights of Yeast Fatty Acid Synthase

Xiong, Y., Lomakin, I.B., Steitz, T.A.

(2007) Cell 129: 319-332

• PubMed: 17448991 
• DOI: 10.1016/j.cell.2007.03.013
• Primary Citation of Related Structures:  
  2PFF


• PubMed Abstract: 
  

In yeast, the whole metabolic pathway for making 16- and 18-carbon fatty acids is carried out by fatty acid synthase, a 2.6 megadalton molecular-weight macromolecular assembly containing six copies of all eight catalytic centers. We have determined its crystal structure, which illuminates how this enzyme is initially activated and then carries out multiple steps of synthesis in each of six sterically isolated reaction chambers. Six of the catalytic sites are in the wall of the assembly facing an acyl carrier protein (ACP) bound to the ketoacyl synthase domain. Two-dimensional diffusion of substrates to the catalytic sites may be achieved by the electrostatically negative ACP swinging to each of the six electrostatically positive catalytic sites. The phosphopantetheinyl transferase domain lies outside the shell of the assembly, inaccessible to ACP that lies inside, suggesting that the attachment of the pantetheine arm to ACP must occur before complete assembly of the complex.

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Organizational Affiliation: 

Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, CT 06520-8114, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Fatty acid synthase subunit alpha	A, D, G	1688	Saccharomyces cerevisiae	Mutation(s): 0  EC: 2.3.1.86 (PDB Primary Data), 1.1.1.100 (UniProt), 2.3.1.41 (UniProt)
UniProt
Find proteins for P19097 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P19097  Go to UniProtKB:  P19097

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Fatty acid synthase subunit beta	B, E, H	2006	Saccharomyces cerevisiae	Mutation(s): 0  EC: 2.3.1.86 (PDB Primary Data), 4.2.1.59 (UniProt), 1.3.1.9 (UniProt), 2.3.1.38 (UniProt), 2.3.1.39 (UniProt), 3.1.2.14 (UniProt)
UniProt
Find proteins for P07149 (Saccharomyces cerevisiae (strain ATCC 204508 / S288c)) Explore P07149  Go to UniProtKB:  P07149

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
Tail protein	C, F, I	65	N/A	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 4.00 Å
• R-Value Free: 0.346 
• R-Value Work: 0.319 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 231.343	α = 90
b = 231.343	β = 90
c = 754.288	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
PHASER	phasing
CNS	refinement
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2007-04-04 
• Released Date: 2007-07-10 
Deposition Author(s): Xiong, Y., Lomakin, I.B., Steitz, T.A.

Revision History  

• Version 1.0: 2007-07-10
  Type: Initial release
  
• Version 1.1: 2008-05-01
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance