Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 64.20 kDa 
• Atom Count: 5071 
• Modelled Residue Count: 570 
• Deposited Residue Count: 570 
• Unique protein chains: 1

1C8U

CRYSTAL STRUCTURE OF THE E.COLI THIOESTERASE II, A HOMOLOGUE OF THE HUMAN NEF-BINDING ENZYME

• PDB DOI: 10.2210/pdb1C8U/pdb

• Classification: HYDROLASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 1999-07-29 Released: 2000-07-14 
• Deposition Author(s): Li, J., Derewenda, Z.S.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.248 
• R-Value Work: 0.218 
• R-Value Observed: 0.230 

Literature

Crystal structure of the Escherichia coli thioesterase II, a homolog of the human Nef binding enzyme.

Li, J., Derewenda, U., Dauter, Z., Smith, S., Derewenda, Z.S.

(2000) Nat Struct Biol 7: 555-559

• PubMed: 10876240 
• DOI: 10.1038/76776
• Primary Citation of Related Structures:  
  1C8U


• PubMed Abstract: 
  

Here we report the solution and refinement at 1.9 A resolution of the crystal structure of the Escherichia coli medium chain length acyl-CoA thioesterase II. This enzyme is a close homolog of the human protein that interacts with the product of the HIV-1 Nef gene, sharing 45% amino acid sequence identity with it. The structure of the E. coli thioesterase II reveals a new tertiary fold, a 'double hot dog', showing an internal repeat with a basic unit that is structurally similar to the recently described beta-hydroxydecanoyl thiol ester dehydrase. The catalytic site, inferred from the crystal structure and verified by site directed mutagenesis, involves novel chemistry and includes Asp 204, Gln 278 and Thr 228, which synergistically activate a nucleophilic water molecule.

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Related Citations: 

• Crystallization of Thioesterase II from Escherichia Coli
  Swenson, L., Green, R., Smith, S., Derewenda, Z.S.
  (1994) J Mol Biol 236: 660

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Organizational Affiliation: 

Department of Molecular Physiology and Biological Physics, University of Virginia, P.O. Box 800736, Charlottesville, Virginia 22908-0736, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ACYL-COA THIOESTERASE II	A, B	285	Escherichia coli	Mutation(s): 0  EC: 3.1.2 (PDB Primary Data), 3.1.2.20 (UniProt)
UniProt
Find proteins for P0AGG2 (Escherichia coli (strain K12)) Explore P0AGG2  Go to UniProtKB:  P0AGG2

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
LDA	C [auth A], D [auth B]	LAURYL DIMETHYLAMINE-N-OXIDE C14 H31 N O SYELZBGXAIXKHU-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.248 
• R-Value Work: 0.218 
• R-Value Observed: 0.230 
• Space Group: C 2 2 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 95.902	α = 90
b = 119.805	β = 90
c = 165.479	γ = 90

Software Package:

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

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1999-07-29 
• Released Date: 2000-07-14 
Deposition Author(s): Li, J., Derewenda, Z.S.

Revision History  

• Version 1.0: 2000-07-14
  Type: Initial release
  
• Version 1.1: 2008-04-27
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance