1Q4S

Crystal structure of Arthrobacter sp. strain SU 4-hydroxybenzoyl CoA thioesterase complexed with CoA and 4-hydroxybenzoic acid


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.182 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The Structure of 4-Hydroxybenzoyl-CoA Thioesterase from Arthrobacter sp. strain SU

Thoden, J.B.Zhuang, Z.Dunaway-Mariano, D.Holden, H.M.

(2003) J.Biol.Chem. 278: 43709-43716

  • DOI: 10.1074/jbc.M308198200
  • Primary Citation of Related Structures:  1Q4T, 1Q4U

  • PubMed Abstract: 
  • The 4-chlorobenzoyl-CoA dehalogenation pathway in certain Arthrobacter and Pseudomonas bacterial species contains three enzymes: a ligase, a dehalogenase, and a thioesterase. Here we describe the high resolution x-ray crystallographic structure of th ...

    The 4-chlorobenzoyl-CoA dehalogenation pathway in certain Arthrobacter and Pseudomonas bacterial species contains three enzymes: a ligase, a dehalogenase, and a thioesterase. Here we describe the high resolution x-ray crystallographic structure of the 4-hydroxybenzoyl-CoA thioesterase from Arthrobacter sp. strain SU. The tetrameric enzyme is a dimer of dimers with each subunit adopting the so-called "hot dog fold" composed of six strands of anti-parallel beta-sheet flanked on one side by a rather long alpha-helix. The dimers come together to form the tetramer with their alpha-helices facing outwards. This quaternary structure is in sharp contrast to that previously observed for the 4-hydroxybenzoyl-CoA thioesterase from Pseudomonas species strain CBS-3, whereby the dimers forming the tetramer pack with their alpha-helices projecting toward the interfacial region. In the Arthrobacter thioesterase, each of the four active sites is formed by three of the subunits of the tetramer. On the basis of both structural and kinetic data, it appears that Glu73 is the active site base in the Arthrobacter thioesterase. Remarkably, this residue is located on the opposite side of the substrate-binding pocket compared with that observed for the Pseudomonas enzyme. Although these two bacterial thioesterases demonstrate equivalent catalytic efficiencies, substrate specificities, and metabolic functions, their quaternary structures, CoA-binding sites, and catalytic platforms are decidedly different.


    Organizational Affiliation

    Department of Biochemistry, University of Wisconsin, Madison, Wisconsin 53706-1544, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Thioesterase
A, B
151Arthrobacter spGene Names: fcbC (fcbC1)
EC: 3.1.2.23
Find proteins for Q04416 (Arthrobacter sp)
Go to UniProtKB:  Q04416
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
COA
Query on COA

Download SDF File 
Download CCD File 
A
COENZYME A
C21 H36 N7 O16 P3 S
RGJOEKWQDUBAIZ-IBOSZNHHSA-N
 Ligand Interaction
PHB
Query on PHB

Download SDF File 
Download CCD File 
A, B
P-HYDROXYBENZOIC ACID
C7 H6 O3
FJKROLUGYXJWQN-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.237 
  • R-Value Work: 0.182 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 113.100α = 90.00
b = 113.100β = 90.00
c = 60.100γ = 120.00
Software Package:
Software NamePurpose
TNTrefinement
SAINTdata scaling
SAINTdata reduction
TNTphasing
FRAMBOdata collection

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-09-23
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Source and taxonomy, Version format compliance
  • Version 1.3: 2017-10-11
    Type: Refinement description