1SB3

Structure of 4-hydroxybenzoyl-CoA reductase from Thauera aromatica


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.171 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of a Xanthine Oxidase-Related 4-Hydroxybenzoyl-CoA Reductase with an Additional [4Fe-4S] Cluster and an Inverted Electron Flow.

Unciuleac, M.Warkentin, E.Page, C.C.Boll, M.Ermler, U.

(2004) Structure 12: 2249-2256

  • DOI: 10.1016/j.str.2004.10.008
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • The Mo-flavo-Fe/S-dependent heterohexameric protein complex 4-hydroxybenzoyl-CoA reductase (4-HBCR, dehydroxylating) is a central enzyme of the anaerobic degradation of phenolic compounds and belongs to the xanthine oxidase (XO) family of molybdenum ...

    The Mo-flavo-Fe/S-dependent heterohexameric protein complex 4-hydroxybenzoyl-CoA reductase (4-HBCR, dehydroxylating) is a central enzyme of the anaerobic degradation of phenolic compounds and belongs to the xanthine oxidase (XO) family of molybdenum enzymes. Its X-ray structure was established at 1.6 A resolution. The most pronounced difference between 4-HBCR and other structurally characterized members of the XO family is the insertion of 40 amino acids within the beta subunit, which carries an additional [4Fe-4S] cluster at a distance of 16.5 A to the isoalloxazine ring of FAD. The architecture of 4-HBCR and concomitantly performed electron transfer rate calculations suggest an inverted electron transfer chain from the donor ferredoxin via the [4Fe-4S] cluster to the Mo over a distance of 55 A. The binding site of 4-hydroxybenzoyl-CoA is located in an 18 A long channel lined up by several aromatic side chains around the aromatic moiety, which are proposed to shield and stabilize the postulated radical intermediates during catalysis.


    Related Citations: 
    • Crystallization of 4-Hydroxybenzoyl-CoA Reductase and the structure of its Electron Donor Ferredoxin
      Unciuleac, M.,Boll, M.,Warkentin, E.,Ermler, U.
      (2004) Acta Crystallogr.,Sect.D 60: 388


    Organizational Affiliation

    Institut für Biologie II, Mikrobiologie Schänzlestrasse 1, D-79104 Freiburg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
4-hydroxybenzoyl-CoA reductase alpha subunit
A, D
769Thauera aromaticaMutation(s): 0 
Gene Names: hcrA
EC: 1.3.7.9
Find proteins for O33819 (Thauera aromatica)
Go to UniProtKB:  O33819
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
4-hydroxybenzoyl-CoA reductase beta subunit
B, E
324Thauera aromaticaMutation(s): 0 
Gene Names: hcrB
EC: 1.3.7.9
Find proteins for O33820 (Thauera aromatica)
Go to UniProtKB:  O33820
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetails
4-hydroxybenzoyl-CoA reductase gamma subunit
C, F
161Thauera aromaticaMutation(s): 0 
Gene Names: hcrC
EC: 1.3.7.9
Find proteins for O33818 (Thauera aromatica)
Go to UniProtKB:  O33818
Small Molecules
Ligands 6 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
EPE
Query on EPE

Download SDF File 
Download CCD File 
A
4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
HEPES
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
 Ligand Interaction
SF4
Query on SF4

Download SDF File 
Download CCD File 
B, E
IRON/SULFUR CLUSTER
Fe4 S4
LJBDFODJNLIPKO-VKOJMFJBAC
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
D, E
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
FAD
Query on FAD

Download SDF File 
Download CCD File 
B, E
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
FES
Query on FES

Download SDF File 
Download CCD File 
C, F
FE2/S2 (INORGANIC) CLUSTER
Fe2 S2
NIXDOXVAJZFRNF-UHFFFAOYSA-N
 Ligand Interaction
PCD
Query on PCD

Download SDF File 
Download CCD File 
A, D
(MOLYBDOPTERIN-CYTOSINE DINUCLEOTIDE-S,S)-DIOXO-AQUA-MOLYBDENUM(V)
MOLYBDENUM COFACTOR; MOCO
C19 H26 Mo N8 O16 P2 S2
YEBYDVFRFUQMER-NBXMTLLYDD
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Free: 0.205 
  • R-Value Work: 0.171 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 116.620α = 90.00
b = 150.200β = 90.00
c = 175.270γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
DENZOdata reduction
SCALEPACKdata scaling
EPMRphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2004-12-21
    Type: Initial release
  • Version 1.1: 2008-04-29
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance