Biological Assembly 1  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Hetero 6-mer - A2B2C2 Pseudo Symmetry: Cyclic - C2  (3D View)
Pseudo Stoichiometry: Hetero 6-mer - A4B2 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

 3D View: Structure | 1D-3D View | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A1B1C1 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 3-mer - A2B1 

Biological assembly 2 generated by PISA,PQS (software)

Macromolecule Content

• Total Structure Weight: 107.41 kDa 
• Atom Count: 7667 
• Modelled Residue Count: 897 
• Deposited Residue Count: 914 
• Unique protein chains: 3

1T0S

Structure of the Toluene/o-Xylene Monooxygenase Hydroxylase with 4-bromophenol bound

• PDB DOI: 10.2210/pdb1T0S/pdb

• Classification: OXIDOREDUCTASE
• Organism(s): Pseudomonas stutzeri
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2004-04-12 Released: 2004-07-27 
• Deposition Author(s): Sazinsky, M.H., Bard, J., Di Donato, A., Lippard, S.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.273 
• R-Value Work: 0.236 
• R-Value Observed: 0.236 

Literature

Crystal Structure of the Toluene/o-Xylene Monooxygenase Hydroxylase from Pseudomonas stutzeri OX1: INSIGHT INTO THE SUBSTRATE SPECIFICITY, SUBSTRATE CHANNELING, AND ACTIVE SITE TUNING OF MULTICOMPONENT MONOOXYGENASES.

Sazinsky, M.H., Bard, J., Di Donato, A., Lippard, S.J.

(2004) J Biol Chem 279: 30600-30610

• PubMed: 15096510 
• DOI: 10.1074/jbc.M400710200
• Primary Citation of Related Structures:  
  1T0Q, 1T0R, 1T0S


• PubMed Abstract: 
  

The four-component toluene/o-xylene monooxygenase (ToMO) from Pseudomonas stutzeri OX1 is capable of oxidizing arenes, alkenes, and haloalkanes at a carboxylate-bridged diiron center similar to that of soluble methane monooxygenase (sMMO). The remarkable variety of substrates accommodated by ToMO invites applications ranging from bioremediation to the regio- and enantiospecific oxidation of hydrocarbons on an industrial scale. We report here the crystal structures of the ToMO hydroxylase (ToMOH), azido ToMOH, and ToMOH containing the product analogue 4-bromophenol to 2.3 A or greater resolution. The catalytic diiron(III) core resembles that of the sMMO hydroxylase, but aspects of the alpha2beta2gamma2 tertiary structure are notably different. Of particular interest is a 6-10 A-wide channel of approximately 35 A in length extending from the active site to the protein surface. The presence of three bromophenol molecules in this space confirms this route as a pathway for substrate entrance and product egress. An analysis of the ToMOH active site cavity offers insights into the different substrate specificities of multicomponent monooxygenases and explains the behavior of mutant forms of homologous enzymes described in the literature.

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Organizational Affiliation: 

Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
toluene, o-xylene monooxygenase oxygenase subunit	A	498	Pseudomonas stutzeri	Mutation(s): 0  Gene Names: touA
UniProt
Find proteins for O87798 (Pseudomonas stutzeri) Explore O87798  Go to UniProtKB:  O87798

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
toluene, o-xylene monooxygenase oxygenase subunit	B	330	Pseudomonas stutzeri	Mutation(s): 0  Gene Names: touE
UniProt
Find proteins for O87802 (Pseudomonas stutzeri) Explore O87802  Go to UniProtKB:  O87802

Entity ID: 3
Molecule	Chains	Sequence Length	Organism	Details	Image
touB	C	86	Pseudomonas stutzeri	Mutation(s): 0  Gene Names: touB
UniProt
Find proteins for O87799 (Pseudomonas stutzeri) Explore O87799  Go to UniProtKB:  O87799

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
BML	H [auth A], I [auth A], J [auth A], K [auth A], L [auth B], M [auth B]	4-BROMOPHENOL C6 H5 Br O GZFGOTFRPZRKDS-UHFFFAOYSA-N
MCR	G [auth A]	SULFANYLACETIC ACID C2 H4 O2 S CWERGRDVMFNCDR-UHFFFAOYSA-N
FE	D [auth A], E [auth A]	FE (III) ION Fe VTLYFUHAOXGGBS-UHFFFAOYSA-N
OH	F [auth A]	HYDROXIDE ION H O XLYOFNOQVPJJNP-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.273 
• R-Value Work: 0.236 
• R-Value Observed: 0.236 
• Space Group: P 3₁ 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 183.242	α = 90
b = 183.242	β = 90
c = 67.671	γ = 120

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2004-04-12 
• Released Date: 2004-07-27 
Deposition Author(s): Sazinsky, M.H., Bard, J., Di Donato, A., Lippard, S.J.

Revision History  

• Version 1.0: 2004-07-27
  Type: Initial release
  
• Version 1.1: 2008-04-30
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Derived calculations, Version format compliance
• Version 1.3: 2011-11-16
  Changes: Atomic model