2-Amino-4-deoxychorismate dehydrogenase

2-amino-4-deoxychorismate dehydrogenase
Identifiers
EC no.1.3.8.16
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2-Amino-4-deoxychorismate dehydrogenase (EC 1.3.8.16, ADIC dehydrogenase, 2-amino-2-deoxyisochorismate dehydrogenase, SgcG) is an enzyme with systematic name (2S)-2-amino-4-deoxychorismate:FMN oxidoreductase.[1][2] This enzyme catalyses the following chemical reaction

(1)
+ FMN
 
 
 
 
 
 
 
(2)
+ FMNH2
 

It converts 2-amino-2-deoxyisochorismic acid (1) into 3-(1-carboxyvinyloxy)anthranilic acid (2) by oxidation using flavin mononucleotide (FMN) as its cofactor.[3]

This reaction is part of the biosynthesis of the benzoxazolinate moiety of the enediyne antitumour antibiotic C-1027 from Streptomyces globisporus. The intermediate acid (1) is produced from chorismic acid by the enzyme 2-amino-4-deoxychorismate synthase:[1]

 
 
 
 
 
 
 
(1)

References

  1. ^ a b Van Lanen SG, Lin S, Shen B (January 2008). "Biosynthesis of the enediyne antitumor antibiotic C-1027 involves a new branching point in chorismate metabolism". Proceedings of the National Academy of Sciences of the United States of America. 105 (2): 494–9. Bibcode:2008PNAS..105..494V. doi:10.1073/pnas.0708750105. PMC 2206564. PMID 18182490.
  2. ^ Yu L, Mah S, Otani T, Dedon P (1995). "The benzoxazolinate of C-1027 confers intercalative DNA binding". J. Am. Chem. Soc. 117 (34): 8877–8878. Bibcode:1995JAChS.117.8877Y. doi:10.1021/ja00139a032.
  3. ^ Enzyme 1.3.99.24 at KEGG Pathway Database.