1JOA

NADH PEROXIDASE WITH CYSTEINE-SULFENIC ACID


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.179 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the native cysteine-sulfenic acid redox center of enterococcal NADH peroxidase refined at 2.8 A resolution.

Yeh, J.I.Claiborne, A.Hol, W.G.

(1996) Biochemistry 35: 9951-9957

  • DOI: 10.1021/bi961037s

  • PubMed Abstract: 
  • In order to obtain the crystal structure of the flavoprotein NADH peroxidase with its native Cys42-sulfenic acid redox center, a strategy combining reduced exposure of crystals to ambient oxygen and data collection at -160 degrees C was applied. The ...

    In order to obtain the crystal structure of the flavoprotein NADH peroxidase with its native Cys42-sulfenic acid redox center, a strategy combining reduced exposure of crystals to ambient oxygen and data collection at -160 degrees C was applied. The structure of the native enzyme to 2.8 A resolution is described; these results conclusively establish the existence of the Cys42-sulfenic acid as the functional non-flavin redox center of the peroxidase and provide the first structure for any naturally occurring protein-sulfenic acid. The Cys42-sulfenic acid atoms C alpha-C beta-S gamma-O roughly define a planar arrangement which is stacked parallel to the si face of the FAD isoalloxazine and positions the sulfenyl oxygen atom only 3.3 A from FAD-C4A. His10-N epsilon 2 contributes a hydrogen bond to the sulfenic acid oxygen, at a distance of 3.2 A. Although one oxygen atom (OX1) of the non-native Cys42-sulfonic acid derivative identified in the earlier wild-type peroxidase structure was taken to represent the native Cys42-sulfenic acid oxygen [Stehle, T., Ahmed, S. A., Claiborne, A., & Schulz, G. E. (1991) J. Mol. Biol. 221, 1325-1344], this structure shows that the sulfenic acid oxygen does not occupy this position, nor is it hydrogen-bonded to Cys42-N as was OX1. Comparison of the native Cys42-sulfenic acid structure with that of two-electron reduced glutathione reductase provides an insight into the sulfenic acid FAD charge-transfer interaction observed with both wild-type and His10 mutant peroxidases. A model of the E.NADH intermediate recently observed in stopped-flow analyses of the enzyme [Crane, E. J., III, Parsonage, D., Poole, L. B., & Claiborne, A. (1995) Biochemistry 34, 14114-14124] has also been generated to assist in analyzing the chemical mechanism of sulfenic acid reduction.


    Organizational Affiliation

    Department of Biological Structure, Howard Hughes Medical Institute, University of Washington, Seattle 98195-7442, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NADH PEROXIDASE
A
447Enterococcus faecalis (strain ATCC 700802 / V583)Gene Names: npr
EC: 1.11.1.1
Find proteins for P37062 (Enterococcus faecalis (strain ATCC 700802 / V583))
Go to UniProtKB:  P37062
Small Molecules
Ligands 1 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
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CSO
Query on CSO
A
L-PEPTIDE LINKINGC3 H7 N O3 SCYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.250 
  • R-Value Work: 0.179 
  • Space Group: I 41 2 2
Unit Cell:
Length (Å)Angle (°)
a = 153.730α = 90.00
b = 153.730β = 90.00
c = 189.990γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
X-PLORmodel building
X-PLORphasing
SCALEPACKdata scaling
X-PLORrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-01-11
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Version format compliance