6QYI

Structure of HPAB from E.coli in complex with FAD


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.172 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.165 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Structural and Functional Characterization of 4-Hydroxyphenylacetate 3-Hydroxylase from Escherichia coli.

Deng, Y.Faivre, B.Back, O.Lombard, M.Pecqueur, L.Fontecave, M.

(2020) Chembiochem 21: 163-170

  • DOI: https://doi.org/10.1002/cbic.201900277
  • Primary Citation of Related Structures:  
    6QYH, 6QYI

  • PubMed Abstract: 

    The hydroxylation of phenols into polyphenols, which are valuable chemicals and pharmaceutical products, is a challenging reaction. The search for green synthetic processes has led to considering microorganisms and pure hydroxylases as catalysts for phenol hydroxylation. Herein, we report the structural and functional characterization of the flavin adenine dinucleotide (FAD)-dependent 4-hydroxyphenylacetate 3-monooxygenase from Escherichia coli, named HpaB. It is shown that this enzyme enjoys a relatively broad substrate specificity, which allows the conversion of a number of non-natural phenolic compounds, such as tyrosol, hydroxymandelic acid, coumaric acid, hydroxybenzoic acid and its methyl ester, and phenol, into the corresponding catechols. The reaction can be performed by using a simple chemical assay based on formate as the electron donor and the organometallic complex [Rh(bpy)Cp*(H 2 O)] 2+ (Cp*: 1,2,3,4,5-pentamethylcyclopentadiene, bpy: 2,2'-bipyridyl) as the catalyst for FAD reduction. The availability of a crystal structure of HpaB in complex with FAD at 1.8 Å resolution opens up the possibility of the rational tuning of the substrate specificity and activity of this interesting class of phenol hydroxylases.


  • Organizational Affiliation

    Laboratoire de Chimie des Processus Biologiques, Collège de France, Sorbonne Université, CNRS, UMR 8229, PSL Research University, 11 place Marcelin Berthelot, 75005, Paris, France.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
4-hydroxyphenylacetate 3-monooxygenase oxygenase component
A, B
520Escherichia coliMutation(s): 0 
Gene Names: hpaBCR538_21835DS732_04180NCTC9045_04991NCTC9117_05338
EC: 1.14.14.9
UniProt
Find proteins for Q57160 (Escherichia coli)
Explore Q57160 
Go to UniProtKB:  Q57160
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ57160
Sequence Annotations
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download Ideal Coordinates CCD File 
C [auth A],
N [auth B]
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
EPE
Query on EPE

Download Ideal Coordinates CCD File 
O [auth B]4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N
PGE
Query on PGE

Download Ideal Coordinates CCD File 
D [auth A],
E [auth A],
P [auth B],
Q [auth B],
R [auth B]
TRIETHYLENE GLYCOL
C6 H14 O4
ZIBGPFATKBEMQZ-UHFFFAOYSA-N
PEG
Query on PEG

Download Ideal Coordinates CCD File 
F [auth A]
G [auth A]
H [auth A]
I [auth A]
J [auth A]
F [auth A],
G [auth A],
H [auth A],
I [auth A],
J [auth A],
K [auth A],
L [auth A],
M [auth A],
S [auth B],
T [auth B],
U [auth B],
V [auth B],
W [auth B]
DI(HYDROXYETHYL)ETHER
C4 H10 O3
MTHSVFCYNBDYFN-UHFFFAOYSA-N
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.172 
  • R-Value Work: 0.165 
  • R-Value Observed: 0.165 
  • Space Group: P 65 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 188.16α = 90
b = 188.16β = 90
c = 162.5γ = 120
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
autoPROCdata scaling
PHASERphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
French National Research AgencyFrance53311-LABX-0011

Revision History  (Full details and data files)

  • Version 1.0: 2019-06-12
    Type: Initial release
  • Version 1.1: 2020-01-29
    Changes: Database references
  • Version 1.2: 2024-05-15
    Changes: Data collection, Database references, Refinement description