1NRG

Structure and Properties of Recombinant Human Pyridoxine-5'-Phosphate Oxidase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure and properties of recombinant human pyridoxine 5'-phosphate oxidase.

Musayev, F.N.Di Salvo, M.L.Ko, T.P.Schirch, V.Safo, M.K.

(2003) Protein Sci 12: 1455-1463

  • DOI: 10.1110/ps.0356203
  • Primary Citation of Related Structures:  
    1NRG

  • PubMed Abstract: 
  • Pyridoxine 5'-phosphate oxidase catalyzes the terminal step in the synthesis of pyridoxal 5'-phosphate. The cDNA for the human enzyme has been cloned and expressed in Escherichia coli. The purified human enzyme is a homodimer that exhibits a low cata ...

    Pyridoxine 5'-phosphate oxidase catalyzes the terminal step in the synthesis of pyridoxal 5'-phosphate. The cDNA for the human enzyme has been cloned and expressed in Escherichia coli. The purified human enzyme is a homodimer that exhibits a low catalytic rate constant of approximately 0.2 sec(-1) and K(m) values in the low micromolar range for both pyridoxine 5'phosphate and pyridoxamine 5'-phosphate. Pyridoxal 5'-phosphate is an effective product inhibitor. The three-dimensional fold of the human enzyme is very similar to those of the E. coli and yeast enzymes. The human and E. coli enzymes share 39% sequence identity, but the binding sites for the tightly bound FMN and substrate are highly conserved. As observed with the E. coli enzyme, the human enzyme binds one molecule of pyridoxal 5'-phosphate tightly on each subunit.


    Organizational Affiliation

    Department of Medicinal Chemistry, Institute for Structural Biology and Drug Discovery, Virginia Commonwealth University, 800 E. Leigh Street, Richmond, VA 23219, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
pyridoxine 5'-phosphate oxidaseA261Homo sapiensMutation(s): 0 
Gene Names: HumanPNPO
EC: 1.4.3.5
Find proteins for Q9NVS9 (Homo sapiens)
Explore Q9NVS9 
Go to UniProtKB:  Q9NVS9
NIH Common Fund Data Resources
PHAROS  Q9NVS9
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN

Download CCD File 
A
FLAVIN MONONUCLEOTIDE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
 Ligand Interaction
PLP
Query on PLP

Download CCD File 
A
PYRIDOXAL-5'-PHOSPHATE
C8 H10 N O6 P
NGVDGCNFYWLIFO-UHFFFAOYSA-N
 Ligand Interaction
PO4
Query on PO4

Download CCD File 
A
PHOSPHATE ION
O4 P
NBIIXXVUZAFLBC-UHFFFAOYSA-K
 Ligand Interaction
BME
Query on BME

Download CCD File 
A
BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.95 Å
  • R-Value Free: 0.253 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.192 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 82.747α = 90
b = 82.747β = 90
c = 59.327γ = 120
Software Package:
Software NamePurpose
CNSrefinement
bioteXdata reduction
bioteXdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-02-11
    Type: Initial release
  • Version 1.1: 2008-04-29
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance
  • Version 1.3: 2017-10-11
    Changes: Refinement description