KEGG   ENZYME: 4.2.1.73Help
Entry
EC 4.2.1.73                 Enzyme                                 

Name
protoaphin-aglucone dehydratase (cyclizing);
protoaphin dehydratase;
protoaphin dehydratase (cyclizing);
protoaphin-aglucone hydro-lyase (cyclizing)
Class
Lyases;
Carbon-oxygen lyases;
Hydro-lyases
BRITE hierarchy
Sysname
protoaphin-aglucone hydro-lyase (cyclizing; xanthoaphin-forming)
Reaction(IUBMB)
protoaphin aglucone = xanthoaphin + H2O [RN:R03742]
Reaction(KEGG)
Substrate
protoaphin aglucone [CPD:C02879]
Product
xanthoaphin [CPD:C01863];
H2O [CPD:C00001]
Comment
The product is converted non-enzymically to erythroaphin, an aphid pigment.
History
EC 4.2.1.73 created 1978
Reference
1
  Authors
Cameron, D.W., Sawyer, W.H. and Trikojus, V.M.
  Title
Colouring matters of the Aphidoidea. XLII. Purification and properties of the cyclising enzyme [Protoaphin dehydratase (cyclising)] concerned with pigment transformation in the wooly aphid Eriosoma lanigerum Hausmann (Hemiptera: Insecta).
  Journal
Aust. J. Biol. Sci. 30 (1977) 173-181.
Other DBs
ExplorEnz - The Enzyme Database: 
IUBMB Enzyme Nomenclature: 
ExPASy - ENZYME nomenclature database: 
BRENDA, the Enzyme Database: 
CAS: 
64177-87-3

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