KEGG   ENZYME: 1.5.4.1
Entry
EC 1.5.4.1                  Enzyme                                 
Name
pyrimidodiazepine synthase;
PDA synthase;
pyrimidodiazepine:oxidized-glutathione oxidoreductase (ring-opening, cyclizing);
pyrimidodiazepine:glutathione-disulfide oxidoreductase (ring-opening, cyclizing)
Class
Oxidoreductases;
Acting on the CH-NH group of donors;
With a disulfide as acceptor
Sysname
2-amino-6-acetyl-3,7,8,9-tetrahydro-3H-pyrimido[4,5-b][1,4]diazepin-4-one:glutathione-disulfide oxidoreductase (ring-opening, cyclizing)
Reaction(IUBMB)
2-amino-6-acetyl-3,7,8,9-tetrahydro-3H-pyrimido[4,5-b][1,4]diazepin-4-one + glutathione disulfide + H2O = 6-pyruvoyltetrahydropterin + 2 glutathione [RN:R03984]
Reaction(KEGG)
R03984
Substrate
2-amino-6-acetyl-3,7,8,9-tetrahydro-3H-pyrimido[4,5-b][1,4]diazepin-4-one [CPD:C02587];
glutathione disulfide [CPD:C00127];
H2O [CPD:C00001]
Product
6-pyruvoyltetrahydropterin [CPD:C03684];
glutathione [CPD:C00051]
Comment
In the reverse direction, the reduction of 6-pyruvoyl-tetrahydropterin is accompanied by the opening of the 6-membered pyrazine ring and the formation of the 7-membered diazepine ring. The pyrimidodiazepine formed is an acetyldihydro derivative. Involved in the formation of the eye pigment drosopterin in Drosophila melanogaster.
History
EC 1.5.4.1 created 1990, modified 2014
Pathway
ec00480  Glutathione metabolism
ec00790  Folate biosynthesis
ec01100  Metabolic pathways
Orthology
K00310  pyrimidodiazepine synthase
Genes
DME: Dmel_CG6781(se)
DER: 6545777
DSE: 6604890
DSI: Dsimw501_GD14100(Dsim_GD14100)
DYA: Dyak_GE20749
DAN: 6506964
DSR: 110189884
DPO: 4813077
DPE: 6601435
DMN: 108151105
DWI: 6645945
DMO: Dmoj_GI11974
DAZ: 108613358
DNV: 108650772
DHE: 111601724
DVI: 6624546(se)
 » show all
Reference
1  [PMID:6438092]
  Authors
Wiederrecht GJ, Brown GM.
  Title
Purification and properties of the enzymes from Drosophila melanogaster that catalyze the conversion of dihydroneopterin triphosphate to the pyrimidodiazepine precursor of the drosopterins.
  Journal
J Biol Chem 259:14121-7 (1984)
Reference
2  [PMID:16712527]
  Authors
Kim J, Suh H, Kim S, Kim K, Ahn C, Yim J
  Title
Identification and characteristics of the structural gene for the Drosophila eye colour mutant sepia, encoding PDA synthase, a member of the omega class glutathione S-transferases.
  Journal
Biochem J 398:451-60 (2006)
DOI:10.1042/BJ20060424
  Sequence
[dme:Dmel_CG6781]
Other DBs
ExplorEnz - The Enzyme Database: 1.5.4.1
IUBMB Enzyme Nomenclature: 1.5.4.1
ExPASy - ENZYME nomenclature database: 1.5.4.1
BRENDA, the Enzyme Database: 1.5.4.1
CAS: 93586-06-2

  All links  
Gene (177)   
   RefGene (177)   
Protein sequence (3)   
   UniProt (1)   
   SWISS-PROT (1)   
   RefSeq(pep) (1)   
DNA sequence (4)   
   RefSeq(nuc) (2)   
   GenBank (1)   
   EMBL (1)   
Protein domain (7)   
   InterPro (7)   
All databases (191)   

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