Biological Assembly 1  

 3D View: Structure | Electron Density

Standalone Viewers  (To be retired June 1st  )
Protein Workshop | Ligand Explorer

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 14.90 kDa 
• Atom Count: 1041 
• Residue Count: 135 
• Unique protein chains: 1

1AQT

EPSILON SUBUNIT OF F1F0-ATP SYNTHASE FROM ESCHERICHIA COLI

• DOI: 10.2210/pdb1AQT/pdb

• Classification: HYDROLASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 1997-07-31 Released: 1998-02-04 
• Deposition Author(s): Uhlin, U., Guss, J.M.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.288 
• R-Value Work: 0.214 
• R-Value Observed: 0.214 

Literature

Crystal structure of the epsilon subunit of the proton-translocating ATP synthase from Escherichia coli.

Uhlin, U., Cox, G.B., Guss, J.M.

(1997) Structure 5: 1219-1230

• PubMed: 9331422 
• DOI: 10.1016/s0969-2126(97)00272-4
• Structures With Same Primary Citation


• PubMed Abstract: 
  

Proton-translocating ATP synthases convert the energy generated from photosynthesis or respiration into ATP. These enzymes, termed F0F1-ATPases, are structurally highly conserved. In Escherichia coli, F0F1-ATPase consists of a membrane portion, F0, made up of three different polypeptides (a, b and c) and an F1 portion comprising five different polypeptides in the stoichiometry alpha 3 beta 3 gamma delta epsilon. The minor subunits gamma, delta and epsilon are required for the coupling of proton translocation with ATP synthesis; the epsilon subunit is in close contact with the alpha, beta, gamma and c subunits. The structure of the epsilon subunit provides clues to its essential role in this complex enzyme.

---

Related Citations: 

• The Expression, Purification and Crystallization of the Epsilon Subunit of the F1 Portion of the ATPase of Escherichia Coli
  Codd, R., Cox, G.B., Guss, J.M., Solomon, R.G., Webb, D.
  (1992) J Mol Biol 228: 306

---

Organizational Affiliation: 

Department of Biochemistry, University of Sydney, NSW, Australia.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
ATP SYNTHASE	A	138	Escherichia coli	Mutation(s): 0
Membrane protein Mpstruc	Group:  TRANSMEMBRANE PROTEINS: ALPHA-HELICAL		Sub Group:  F-type ATPase	Protein:  ATP synthase (F1c10)
Find proteins for P0A6E6 (Escherichia coli (strain K12)) Go to UniProtKB:  P0A6E6

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.30 Å
• R-Value Free: 0.288 
• R-Value Work: 0.214 
• R-Value Observed: 0.214 
• Space Group: P 6₅ 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 94.61	α = 90
b = 94.61	β = 90
c = 56.92	γ = 120

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: 1997-07-31 
• Released Date: 1998-02-04 
Deposition Author(s): Uhlin, U., Guss, J.M.

Revision History 

• Version 1.0: 1998-02-04
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance