1CC6

PHE161 AND ARG166 VARIANTS OF P-HYDROXYBENZOATE HYDROXYLASE. IMPLICATIONS FOR NADPH RECOGNITION AND STRUCTURAL STABILITY.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Work: 0.185 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Phe161 and Arg166 variants of p-hydroxybenzoate hydroxylase. Implications for NADPH recognition and structural stability.

Eppink, M.H.Bunthol, C.Schreuder, H.A.van Berkel, W.J.

(1999) Febs Lett. 443: 251-255

  • Primary Citation of Related Structures:  1CC4

  • PubMed Abstract: 
  • Phe161 and Arg166 of p-hydroxybenzoate hydroxylase from Pseudomonas fluorescens belong to a newly discovered sequence motif in flavoprotein hydroxylases with a putative dual function in FAD and NADPH binding [1]. To study their role in more detail, P ...

    Phe161 and Arg166 of p-hydroxybenzoate hydroxylase from Pseudomonas fluorescens belong to a newly discovered sequence motif in flavoprotein hydroxylases with a putative dual function in FAD and NADPH binding [1]. To study their role in more detail, Phe161 and Arg166 were selectively changed by site-directed mutagenesis. F161A and F161G are catalytically competent enzymes having a rather poor affinity for NADPH. The catalytic properties of R166K are similar to those of the native enzyme. R166S and R166E show impaired NADPH binding and R166E has lost the ability to bind FAD. The crystal structure of substrate complexed F161A at 2.2 A is indistinguishable from the native enzyme, except for small changes at the site of mutation. The crystal structure of substrate complexed R166S at 2.0 A revealed that Arg166 is important for providing an intimate contact between the FAD binding domain and a long excursion of the substrate binding domain. It is proposed that this interaction is essential for structural stability and for the recognition of the pyrophosphate moiety of NADPH.


    Related Citations: 
    • Crystal Structure of P-Hydroxybenzoate Hydroxylase Reconstituted with the Modified Fad Present in Alcohol Oxidase from Methyloprophic Yeasts: Evidence for an Arabinoflavin
      Van Berkel, W.J.H.,Eppink, M.H.M.,Schreuder, H.A.
      (1994) Protein Sci. 3: 2245
    • Crystal Structure of P-Hydroxybenzoate Hydroxylase Complexed with its Reaction Product 3,4-Dihydroxybenzoate
      Schreuder, H.A.,Van Der Laan, J.M.,Hol, W.G.J.,Drenth, J.
      (1988) J.Mol.Biol. 199: 637
    • Crystal Structure of P-Hydroxybenzoate Hydroxylase
      Wierenga, R.K.,De Jong, R.J.,Kalk, K.H.,Hol, W.G.J.,Drenth, J.
      (1979) J.Mol.Biol. 131: 55
    • The Coenzyme Analogue Adenosine 5-Diphosphoribose Displaces Fad in the Active Site of P-Hydroxybenzoate Hydroxylase. An X-Ray Crystallographic Investigation
      Van Der Laan, J.M.,Schreuder, H.A.,Swarte, M.B.A.,Wierenga, R.K.,Kalk, K.H.,Hol, W.G.J.,Drenth, J.
      (1989) Biochemistry 28: 7199
    • Engineering of the Microheterogeneity-Resistant P-Hydroxybenzoate Hydroxylase from Pseudomonas Fluorescens
      Eschrich, K.,Van Berkel, W.J.H.,Westphal, A.H.,De Kok, A.,Mattevi, A.,Obmolova, G.,Kalk, H.,Hol, W.G.J.
      (1990) FEBS Lett. 277: 197
    • Crystal Structure of the P-Hydroxybenzoate Hydroxylase-Substrate Complex Refined at 1.9 Angstroms Resolution. Analysis of the Enzyme-Substrate and Enzyme-Product Complexes
      Schreuder, H.A.,Prick, P.A.J.,Wierenga, R.K.,Vriend, G.,Wilson, K.S.,Hol, W.G.J.,Drenth, J.
      (1989) J.Mol.Biol. 208: 679
    • Crystal Structures of Wild-Type P-Hydroxybenzoate Hydroxylase Complexed with 4- Aminobenzoate, 2,4-Dihydroxybenzoate and 3-Hydroxy-4-Aminobenzoate and the Tyr222Ala Mutant, Complexed with 2-Hydroxy-4-Aminobenzoate. Evidence for a Proton Channel and a New B
      Schreuder, H.A.,Mattevi, A.,Obmolova, G.,Kalk, K.H.,Hol, W.G.J.,Van Der Bolt, F.J.T.,Van Berkel, W.J.H.
      (1994) Biochemistry 33: 10161
    • Crystallization and Preliminary X-Ray Investigation of P-Hydroxybenzoate Hydroxylase from Pseudomonas Fluorescens
      Drenth, J.,Hol, W.G.J.,Wierenga, R.K.
      (1975) J.Biol.Chem. 250: 5268
    • Crystal Structure of the Reduced Form of P-Hydroxybenzoate Hydroxylase Refined at 2.3 Angstroms Resolution
      Schreuder, H.A.,Van Der Laan, J.M.,Swarte, M.B.A.,Kalk, K.H.,Hol, W.G.J.,Drenth, J.
      (1992) Proteins 14: 178


    Organizational Affiliation

    Department of Biomolecular Sciences, Wageningen University Research Centre, The Netherlands.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (P-HYDROXYBENZOATE HYDROXYLASE)
A
394Pseudomonas fluorescensGene Names: pobA
EC: 1.14.13.2
Find proteins for P00438 (Pseudomonas fluorescens)
Go to UniProtKB:  P00438
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FAD
Query on FAD

Download SDF File 
Download CCD File 
A
FLAVIN-ADENINE DINUCLEOTIDE
C27 H33 N9 O15 P2
VWWQXMAJTJZDQX-UYBVJOGSSA-N
 Ligand Interaction
PHB
Query on PHB

Download SDF File 
Download CCD File 
A
P-HYDROXYBENZOIC ACID
C7 H6 O3
FJKROLUGYXJWQN-UHFFFAOYSA-N
 Ligand Interaction
External Ligand Annotations 
IDBinding Affinity (Sequence Identity %)
PHBKd: 30000 nM BINDINGMOAD
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.2 Å
  • R-Value Work: 0.185 
  • Space Group: C 2 2 21
Unit Cell:
Length (Å)Angle (°)
a = 72.200α = 90.00
b = 146.800β = 90.00
c = 88.900γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
XDSdata reduction
X-PLORphasing
X-PLORmodel building
XSCALEdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-03-12
    Type: Initial release
  • Version 1.1: 2007-10-16
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2011-12-07
    Type: Database references
  • Version 1.4: 2017-11-29
    Type: Derived calculations