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Deposition Date 2006-10-06
Release Date 2006-11-28
Last Version Date 2023-08-30
Entry Detail
PDB ID:
2INC
Keywords:
OXIDOREDUCTASE
Title:
Native Toluene/o-xylene Monooxygenase Hydroxylase X-ray Crystal Structure
Biological Source:
Source Organism:
Pseudomonas stutzeri (Taxon ID: 316)
Host Organism:
Escherichia coli BL21(DE3)
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
1.85 Å
R-Value Free:
0.23
R-Value Work:
0.19
R-Value Observed:
0.19
Space Group:
P 31 2 1
2INC validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Toluene, o-xylene monooxygenase oxygenase subunit
Gene (Uniprot):touA
Chain IDs:A
Chain Length:491
Number of Molecules:1
Biological Source:Pseudomonas stutzeri
UniProt ID:O87798 Pfam ID:PF02332, PF04945
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Toluene, o-xylene monooxygenase oxygenase subunit
Gene (Uniprot):touE
Chain IDs:B
Chain Length:322
Number of Molecules:1
Biological Source:Pseudomonas stutzeri
UniProt ID:O87802 Pfam ID:PF02332
Protein Blast
Polymer Type:polypeptide(L)
Molecule:TouB protein
Gene (Uniprot):touB
Chain IDs:C
Chain Length:83
Number of Molecules:1
Biological Source:Pseudomonas stutzeri
UniProt ID:O87799 Pfam ID:PF06234
Ligand Molecules
FE
P6G
Primary Citation
X-ray crystal structures of manganese(II)-reconstituted and native toluene/o-xylene monooxygenase hydroxylase reveal rotamer shifts in conserved residues and an enhanced view of the protein interior.
J.Am.Chem.Soc. 128 15108 15110 (2006)
PMID: 17117860 DOI: 10.1021/ja064837r

Abstact

We report the X-ray crystal structures of native and manganese(II)-reconstituted toluene/o-xylene monooxygenase hydroxylase (ToMOH) from Pseudomonas stutzeri OX1 to 1.85 and 2.20 A resolution, respectively. The structures reveal that reduction of the dimetallic active site is accompanied by a carboxylate shift and alteration of the coordination environment for dioxygen binding and activation. A rotamer shift in a strategically placed asparagine 202 accompanies dimetallic center reduction and is proposed to influence protein component interactions. This rotamer shift is conserved between ToMOH and the corresponding residue in methane monooxygenase hydroxylase (MMOH). Previously unidentified hydrophobic pockets similar to those present in MMOH are assigned.

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Primary Citation of related structures
1T0Q