Dopaquinone, cysteine form CD isomers

Stable Identifier
R-HSA-5662908
Type
Reaction [transition]
Species
Homo sapiens
Compartment
melanosome lumen
ReviewStatus
5/5
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Dopaquinone, cysteine form CD isomers
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In the presence of sulfhydryl compounds such as cysteine, dopaquinone reacts to produce several cysteinyldopa (CD) isomers, 5-S-cysteinyldopa (5SCD) and 2-S-cysteinyldopa (2SCD) in 74% and 14% yields, respectively (Ito & Prota 1977, Thompson et al. 1985). 2,5-S,S'-dicysteinyldopa (DiCD) is produced in a 5% yield. Further oxidation of the thiol adducts leads to the formation of pheomelanin via benzothiazine intermediates.
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Authored
Jupe, S  (2015-01-13)
Reviewed
d'Ischia, M  (2015-02-13)
Ito, S  (2015-02-13)
Created
Jupe, S  (2015-01-14)
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