Costunolide synthase

Costunolide synthase
Identifiers
EC no.1.14.14.150
Databases
BRENDAenzyme data
ExPASyNiceZyme view
KEGGenzyme entry
MetaCycmetabolic pathway
Rheareactions
PDB structuresRCSB PDB PDBe PDBsum
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NCBIproteins

Costunolide synthase (EC 1.14.14.150) is an enzyme with systematic name germacra-1(10),4,11(13)-trien-12-oate,NADPH:oxygen oxidoreductase (6alpha-hydroxylating).[1] This enzyme catalyses the following chemical reaction

2D representation of the chemical structure of Q27131000.
(+)-germacrene A acid
 
O2
2 H2O
Rightward reaction arrow with minor substrate(s) from top left and minor product(s) to top right
 
 
 

Costunolide synthase is a cytochrome P450 protein containing heme. It requires a partner cytochrome P450 reductase for functional expression. This uses nicotinamide adenine dinucleotide phosphate.[2] The starting material for this sesquiterpene lactone is produced from (+)-germacrene A by the enzyme germacrene A hydroxylase.[3]

References

  1. ↑ de Kraker JW, Franssen MC, Joerink M, de Groot A, Bouwmeester HJ (May 2002). "Biosynthesis of costunolide, dihydrocostunolide, and leucodin. Demonstration of cytochrome p450-catalyzed formation of the lactone ring present in sesquiterpene lactones of chicory". Plant Physiology. 129 (1): 257–68. doi:10.1104/pp.010957. PMC 155889. PMID 12011356.
  2. ↑ Enzyme 1.14.14.150 at KEGG Pathway Database.
  3. ↑ de Kraker JW, Franssen MC, Dalm MC, de Groot A, Bouwmeester HJ (April 2001). "Biosynthesis of germacrene A carboxylic acid in chicory roots. Demonstration of a cytochrome P450 (+)-germacrene a hydroxylase and NADP+-dependent sesquiterpenoid dehydrogenase(s) involved in sesquiterpene lactone biosynthesis". Plant Physiology. 125 (4): 1930–40. doi:10.1104/pp.125.4.1930. PMC 88848. PMID 11299372.