5-nitrosalicylate dioxygenase

5-nitrosalicylate dioxygenase (EC 1.13.11.64, naaB (gene)) is an enzyme with systematic name 5-nitrosalicylate:oxygen 1,2-oxidoreductase (decyclizing).^[1][2] This enzyme catalyses the following chemical reaction

5-nitrosalicylate + O₂ ${\displaystyle \rightleftharpoons }$ 2-oxo-3-(5-oxofuran-2-ylidene)propanoate + nitrite (overall reaction)

(1a) 5-nitrosalicylate + O₂ ${\displaystyle \rightleftharpoons }$ 4-nitro-6-oxohepta-2,4-dienedioate

(1b) 4-nitro-6-oxohepta-2,4-dienedioate ${\displaystyle \rightleftharpoons }$ 2-oxo-3-(5-oxofuran-2-ylidene)propanoate + nitrite (spontaneous reaction)

5-nitrosalicylate dioxygenase
Identifiers
EC no.	1.13.11.64
Databases
IntEnz	IntEnz view
BRENDA	BRENDA entry
ExPASy	NiceZyme view
KEGG	KEGG entry
MetaCyc	metabolic pathway
PRIAM	profile
PDB structures	RCSB PDB PDBe PDBsum
Search PMC articles PubMed articles NCBI proteins

The enzyme from soil bacterium Bradyrhizobium sp. JS329 participates in 5-nitroanthranilate degradation.