_EC 1.13.11.18 Sulfur dioxygenase. 1 PDB entries  
EC 1.-.-.- Oxidoreductases. [8,663 PDB entries]
EC 1.13.-.- Acting on single donors with incorporation of molecular oxygen. [306 PDB entries]
EC 1.13.11.- With incorporation of two atoms of oxygen. [271 PDB entries]
EC 1.13.11.18 Sulfur dioxygenase. [1 PDB entries]    
2gcu

Reaction: Sulfur + O(2) + H(2)O = sulfite + 2 H(+).
 

Sulfur
+
O(2)
+ H(2)O
=
sulfite
+ 2 × H(+)
Molecule diagrams generated from .mol files obtained from the KEGG ftp site.

Other name(s): Sulfur oxygenase.
Cofactor(s): Fe cation.
Comments: Glutathione (GSH) plays a catalytic role in elemental sulfur activation, but is not consumed during the enzymic reaction. Gsh and elemental sulfur react non-enzymically to yield S-sulfanylglutathione and it is only in this form that the sulfur can be oxidized to yield sulfite. The sulfite can be further converted into sulfate, thiosulfate or S-sulfoglutathione (GSSO(3)(-)) non-enzymically.
Links:   [IntEnz]   [ExPASy]   [KEGG]  

There are 1 PDB entries in enzyme class E.C.1.13.11.18

  PDB code Protein
2gcu
X-ray structure of gene product from arabidopsis thaliana at1g53580
Source: Arabidopsis thaliana. Thale cress. Organism_taxid: 3702. Gene: at1g53580. Expressed in: escherichia coli bl21. Expression_system_taxid: 511693.
Chains: A, B, C, D (244 residues) CATH domain: 3.60.15.10
Bound ligand:   Het Group EDO is 66.00% similar to enzyme product 2-hydroxy carboxylate