1O7P image
Entry Detail
PDB ID:
1O7P
Keywords:
Title:
NAPHTHALENE 1,2-DIOXYGENASE, PRODUCT COMPLEX
Biological Source:
Source Organism:
Host Organism:
PDB Version:
Deposition Date:
2002-11-11
Release Date:
2003-02-20
Method Details:
Experimental Method:
Resolution:
1.95 Å
R-Value Free:
0.21
R-Value Work:
0.18
Space Group:
H 3 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:NAPHTHALENE 1,2-DIOXYGENASE ALPHA SUBUNIT
Chain IDs:A
Chain Length:449
Number of Molecules:1
Biological Source:PSEUDOMONAS PUTIDA
Polymer Type:polypeptide(L)
Description:NAPHTHALENE 1,2-DIOXYGENASE BETA SUBUNIT
Chain IDs:B
Chain Length:194
Number of Molecules:1
Biological Source:PSEUDOMONAS PUTIDA
Primary Citation
Crystal Structure of Naphthalene Dioxygenase: Side-on Binding of Dioxygen to Iron
Science 299 1039 ? (2003)
PMID: 12586937 DOI: 10.1126/SCIENCE.1078020

Abstact

Binding of oxygen to iron is exploited in several biological and chemical processes. Although computational and spectroscopic results have suggested side-on binding, only end-on binding of oxygen to iron has been observed in crystal structures. We have determined structures of naphthalene dioxygenase that show a molecular oxygen species bound to the mononuclear iron in a side-on fashion. In a complex with substrate and dioxygen, the dioxygen molecule is lined up for an attack on the double bond of the aromatic substrate. The structures reported here provide the basis for a reaction mechanism and for the high stereospecificity of the reaction catalyzed by naphthalene dioxygenase.

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