2HMM

Crystal Structure of Naphthalene 1,2-Dioxygenase Bound to Anthracene


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.164 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis for regioselectivity and stereoselectivity of product formation by naphthalene 1,2-dioxygenase.

Ferraro, D.J.Okerlund, A.L.Mowers, J.C.Ramaswamy, S.

(2006) J.Bacteriol. 188: 6986-6994

  • DOI: 10.1128/JB.00707-06
  • Primary Citation of Related Structures:  2HMJ, 2HMK, 2HML, 2HMN, 2HMO

  • PubMed Abstract: 
  • Rieske oxygenase (RO) systems are two- and three-component enzyme systems that catalyze the formation of cis-dihydrodiols from aromatic substrates. Degradation of pollutants in contaminated soil and generation of chiral synthons have been the major f ...

    Rieske oxygenase (RO) systems are two- and three-component enzyme systems that catalyze the formation of cis-dihydrodiols from aromatic substrates. Degradation of pollutants in contaminated soil and generation of chiral synthons have been the major foci of RO research. Substrate specificity and product regio- and stereoselectivity have been shown to vary between individual ROs. While directed evolution methods for altering RO function have been successful in the past, rational engineering of these enzymes still poses a challenge due to the lack of structural understanding. Here we examine the structural changes induced by mutation of Phe-352 in naphthalene 1,2-dioxygenase from Pseudomonas sp. strain NCIB 9816-4 (NDO-O(9816-4)). Structures of the Phe-352-Val mutant in native form and in complex with phenanthrene and anthracene, along with those of wild-type NDO-O(9816-4) in complex with phenanthrene, anthracene, and 3-nitrotoluene, are presented. Phenanthrene was shown to bind in a different orientation in the Phe-352-Val mutant active site from that in the wild type, while anthracene was found to bind in similar positions in both enzymes. Two orientations of 3-nitrotoluene were observed, i.e., a productive and a nonproductive orientation. These orientations help explain why NDO-O(9816-4) forms different products from 3-nitrotoluene than those made from nitrobenzene dioxygenase. Comparison of these structures among themselves and with other known ROs bound to substrates reveals that the orientation of substrate binding at the active site is the primary determinant of product regio- and stereoselectivity.


    Organizational Affiliation

    Department of Biochemistry, Roy J. and Lucille A. Carver College of Medicine, University of Iowa, 51 Newton Road, 4-403 BSB, Iowa City, IA 52242, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Naphthalene 1,2-dioxygenase alpha subunit
A
449Pseudomonas sp. (strain C18)Gene Names: doxB
EC: 1.14.12.12
Find proteins for P0A111 (Pseudomonas sp. (strain C18))
Go to UniProtKB:  P0A111
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
Naphthalene 1,2-dioxygenase beta subunit
B
194Pseudomonas sp. (strain C18)Gene Names: doxD
EC: 1.14.12.12
Find proteins for P0A113 (Pseudomonas sp. (strain C18))
Go to UniProtKB:  P0A113
Small Molecules
Ligands 5 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
AN3
Query on AN3

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Download CCD File 
A
ANTHRACENE
C14 H10
MWPLVEDNUUSJAV-UHFFFAOYSA-N
 Ligand Interaction
EDO
Query on EDO

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Download CCD File 
A, B
1,2-ETHANEDIOL
ETHYLENE GLYCOL
C2 H6 O2
LYCAIKOWRPUZTN-UHFFFAOYSA-N
 Ligand Interaction
FES
Query on FES

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Download CCD File 
A
FE2/S2 (INORGANIC) CLUSTER
Fe2 S2
NIXDOXVAJZFRNF-UHFFFAOYSA-N
 Ligand Interaction
FE
Query on FE

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Download CCD File 
A
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.6 Å
  • R-Value Free: 0.198 
  • R-Value Work: 0.164 
  • Space Group: H 3 2
Unit Cell:
Length (Å)Angle (°)
a = 139.725α = 90.00
b = 139.725β = 90.00
c = 208.113γ = 120.00
Software Package:
Software NamePurpose
REFMACrefinement
d*TREKdata reduction
PDB_EXTRACTdata extraction
d*TREKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-10-10
    Type: Initial release
  • Version 1.1: 2007-10-16
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance