2BJF

Crystal Structure of Conjugated Bile Acid Hydrolase from Clostridium perfringens in Complex with Reaction Products Taurine and Deoxycholate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.67 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.183 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Conjugated Bile Acid Hydrolase is a Tetrameric N-Terminal Thiol Hydrolase with Specific Recognition of its Cholyl But not of its Tauryl Product

Rossocha, M.Schultz-Heienbrok, R.Von Moeller, H.Coleman, J.P.Saenger, W.

(2005) Biochemistry 44: 5739

  • DOI: 10.1021/bi0473206
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • Bacterial bile salt hydrolases catalyze the degradation of conjugated bile acids in the mammalian gut. The crystal structures of conjugated bile acid hydrolase (CBAH) from Clostridium perfringens as apoenzyme and in complex with taurodeoxycholate tha ...

    Bacterial bile salt hydrolases catalyze the degradation of conjugated bile acids in the mammalian gut. The crystal structures of conjugated bile acid hydrolase (CBAH) from Clostridium perfringens as apoenzyme and in complex with taurodeoxycholate that was hydrolyzed to the reaction products taurine and deoxycholate are described here at 2.1 and 1.7 A resolution, respectively. The crystal structures reveal close relationship between CBAH and penicillin V acylase from Bacillus sphaericus. This similarity together with the N-terminal cysteine classifies CBAH as a member of the N-terminal nucleophile (Ntn) hydrolase superfamily. Both crystal structures show an identical homotetrameric organization with dihedral (D(2) or 222) point group symmetry. The structure analysis of C. perfringens CBAH identifies critical residues in catalysis, substrate recognition, and tetramer formation which may serve in further biochemical characterization of bile acid hydrolases.


    Organizational Affiliation

    Freie Universität Berlin, Institut für Kristallographie, Takustrasse 6, 14195 Berlin, Germany.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
CHOLOYLGLYCINE HYDROLASEA329Clostridium perfringensMutation(s): 0 
EC: 3.5.1.24 (PDB Primary Data), 3.5.1 (UniProt)
Find proteins for P54965 (Clostridium perfringens (strain 13 / Type A))
Explore P54965 
Go to UniProtKB:  P54965
Protein Feature View
 ( Mouse scroll to zoom / Hold left click to move )
  • Reference Sequence
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DXC
Query on DXC

Download CCD File 
A
(3ALPHA,5BETA,12ALPHA)-3,12-DIHYDROXYCHOLAN-24-OIC ACID
C24 H40 O4
KXGVEGMKQFWNSR-LLQZFEROSA-N
 Ligand Interaction
TAU
Query on TAU

Download CCD File 
A
2-AMINOETHANESULFONIC ACID
C2 H7 N O3 S
XOAAWQZATWQOTB-UHFFFAOYSA-N
 Ligand Interaction
GOL
Query on GOL

Download CCD File 
A
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.67 Å
  • R-Value Free: 0.201 
  • R-Value Work: 0.182 
  • R-Value Observed: 0.183 
  • Space Group: F 2 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.848α = 90
b = 90.835β = 90
c = 188.547γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-03-03
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance