1FUE

FLAVODOXIN FROM HELICOBACTER PYLORI


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of oxidized flavodoxin, an essential protein in Helicobacter pylori.

Freigang, J.Diederichs, K.Schafer, K.P.Welte, W.Paul, R.

(2002) Protein Sci. 11: 253-261

  • DOI: 10.1110/ps.28602

  • PubMed Abstract: 
  • The redox protein flavodoxin has been shown earlier to be reduced by the pyruvate-oxidoreductase (POR) enzyme complex of Helicobacter pylori, and also was proposed to be involved in the pathogenesis of gastric mucosa-associated lymphoid-tissue lympho ...

    The redox protein flavodoxin has been shown earlier to be reduced by the pyruvate-oxidoreductase (POR) enzyme complex of Helicobacter pylori, and also was proposed to be involved in the pathogenesis of gastric mucosa-associated lymphoid-tissue lymphoma (MALToma). Here, we report its X-ray structure, which is similar to flavodoxins of other bacteria and cyanobacteria. However, H. pylori flavodoxin has an alanine residue near the isoalloxazine ring of its cofactor flavin mononucleotide (FMN), while the other previously crystallized flavodoxins have a larger hydrophobic residue at this position. This creates a solute filled hole near the FMN cofactor of H. pylori flavodoxin. We also show that flavodoxin is essential for the survival of H. pylori, and conclude that its structure can be used as a starting point for the modeling of an inhibitor for the interaction between the POR-enzyme complex and flavodoxin.


    Organizational Affiliation

    Fachbereich Biologie, Universit├Ąt Konstanz, D-78457 Konstanz, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
FLAVODOXIN
A
163Helicobacter pylori (strain J99 / ATCC 700824)Gene Names: fldA
Find proteins for Q9ZK53 (Helicobacter pylori (strain J99 / ATCC 700824))
Go to UniProtKB:  Q9ZK53
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FMN
Query on FMN

Download SDF File 
Download CCD File 
A
FLAVIN MONONUCLEOTIDE
RIBOFLAVIN MONOPHOSPHATE
C17 H21 N4 O9 P
FVTCRASFADXXNN-SCRDCRAPSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.270 
  • R-Value Work: 0.198 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 31.130α = 90.00
b = 47.220β = 97.14
c = 48.310γ = 90.00
Software Package:
Software NamePurpose
SCALEPACKdata scaling
CNSphasing
CNSrefinement
DENZOdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-02-06
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance