Entry
Name
indigoidine synthase;
bspA (gene name)
Class
Lyases;
Carbon-nitrogen lyases;
Amine-lyases
BRITE hierarchy
Sysname
L-glutamine oxidoreductase/cyclase (3-amino-1,5-dihydropyridine-2,6-dione-forming)
Reaction(IUBMB)
2 ATP + 2 L-glutamine + O2 + 2 FMN = 2 AMP + 2 diphosphate + indigoidine + 2 H2O + 2 FMNH2 (overall reaction) [RN:
R13355 ];
(1a) 2 ATP + 2 L-glutamine + 2 FMN = 2 AMP + 2 diphosphate + 2 3-amino-1,5-dihydropyridine-2,6-dione + FMNH2 [RN:
R13353 ];
(1b) 2 3-amino-1,5-dihydropyridine-2,6-dione + O2 = indigoidine + 2 H2O (spontaneous) [RN:
R13354 ]
Reaction(KEGG)
Substrate
Product
Comment
The enzyme, found in a number of bacterial strains, is a non-ribosomal peptide synthase (NRPS). The enzyme forms 3-amino-1,5-dihydropyridine-2,6-dione, which undergoes spontaneous oxidation to form the blue pigment indigoidine.
History
EC 4.3.3.9 created 2024
Orthology
Genes
VSR : Vspart_04306(tycC_7)
» show all
Taxonomy
Reference
Authors
Reverchon S, Rouanet C, Expert D, Nasser W.
Title
Characterization of indigoidine biosynthetic genes in Erwinia chrysanthemi and role of this blue pigment in pathogenicity.
Journal
Sequence
Reference
Authors
Takahashi H, Kumagai T, Kitani K, Mori M, Matoba Y, Sugiyama M.
Title
Cloning and characterization of a Streptomyces single module type non-ribosomal peptide synthetase catalyzing a blue pigment synthesis.
Journal
Sequence
Reference
Authors
Walsh CT, Wencewicz TA.
Title
Flavoenzymes: versatile catalysts in biosynthetic pathways.
Journal
Other DBs
ExplorEnz - The Enzyme Database: 4.3.3.9
ExPASy - ENZYME nomenclature database: 4.3.3.9
BRENDA, the Enzyme Database: 4.3.3.9
LinkDB
All DBs