3D6L

Crystal structure of Cj0915, a hexameric hotdog fold thioesterase of Campylobacter jejuni


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.59 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.209 

Starting Model: experimental
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This is version 1.2 of the entry. See complete history


Literature

Structure and function of a Campylobacter jejuni thioesterase Cj0915, a hexameric hot dog fold enzyme.

Yokoyama, T.Choi, K.J.Bosch, A.M.Yeo, H.J.

(2009) Biochim Biophys Acta 1794: 1073-1081

  • DOI: https://doi.org/10.1016/j.bbapap.2009.03.002
  • Primary Citation of Related Structures:  
    3D6L

  • PubMed Abstract: 

    Acyl-coenzyme A (CoA) thioesterases are a large family of enzymes that hydrolyze acyl-CoA esters to the free fatty acid and CoA and thereby regulate essential cellular functions such as lipid metabolism, membrane synthesis, signal transduction, and gene transcription. To better understand the virulence mechanisms of Campylobacter jejuni, and its possible link to membrane lipid biosynthesis, we have investigated C. jejuni thioesterases, annotated as putative proteins. While little is known about fatty acid biosynthesis and regulation in C. jejuni, remarkable differences in the genome and its organization from Escherichia coli, the paradigm system, raise questions as to the functions of these putative proteins. Here we present the crystal structure and biochemical analysis of Cj0915, defining the first functional thioesterase from C. jejuni. The structure of Cj0915 reveals the hot dog fold with an YciA-type hexameric assembly. Enzymatic assays performed with the purified protein show that Cj0915 is an efficient thioesterase with a broad specificity toward acyl-CoA substrates. This study provides a framework for investigation on roles of the Cj0915 thioesterase in virulence, and functional activities associated with the Cj0915 thioesterase in vivo.


  • Organizational Affiliation

    Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, USA.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Putative hydrolase137Campylobacter jejuniMutation(s): 0 
Gene Names: Cj0915
UniProt
Find proteins for Q0P9Y4 (Campylobacter jejuni subsp. jejuni serotype O:2 (strain ATCC 700819 / NCTC 11168))
Explore Q0P9Y4 
Go to UniProtKB:  Q0P9Y4
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ0P9Y4
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.59 Å
  • R-Value Free: 0.260 
  • R-Value Work: 0.207 
  • R-Value Observed: 0.209 
  • Space Group: P 41 3 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 103.018α = 90
b = 103.018β = 90
c = 103.018γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
HKL-3000data collection
HKL-3000data reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-05-05
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2023-08-30
    Changes: Data collection, Database references, Derived calculations, Refinement description