l-Dopaquinone also known as o-dopaquinone is a metabolite of L-DOPA (L-dihydroxyphenylalanine) and a precursor of melanin. Biosynthesis of melanin occurs...
2 KB (133 words) - 13:17, 18 August 2023
(melanogenesis) starts with the oxidation of l-tyrosine to l-dopa by the enzyme tyrosine hydroxylase, then to l-dopaquinone and dopachrome, which forms melanin...
16 KB (1,624 words) - 15:36, 27 August 2024
melanocytes. Inside the melanocytes, tyrosine is converted into L-DOPA and then L-dopaquinone, which in turn is formed into pheomelanin or eumelanin. Different...
22 KB (2,434 words) - 22:56, 15 August 2024
found in the KEGG database (see External links). L-tyrosine L-DOPA L-dopaquinone L-leucodopachrome L-dopachrome Melanin is brown, non-refractile, and...
63 KB (6,731 words) - 08:49, 1 September 2024
formula C9H9NO4 (molar mass: 195.17 g/mol) may refer to: L-Dopaquinone, also known as o-dopaquinone Pencolide Salicyluric acid This set index page lists chemical...
343 bytes (58 words) - 05:43, 8 May 2021
catalysis of tyrosine by an enzyme called tyrosinase, producing dopaquinone. Dopaquinone may become eumelanin, or phaeomelanin. Eumelanin, meaning true...
14 KB (1,537 words) - 21:02, 20 September 2023
intermediate dopaquinone, which reacts further, eventually leading to melanin oligomers. In addition, tyrosinase can convert tyrosine directly to l-DOPA in...
30 KB (3,032 words) - 04:39, 29 August 2024
melanin production: the hydroxylation of tyrosine to l-DOPA and the oxidation of l-DOPA to dopaquinone. By inhibiting tyrosinase, α-arbutin reduces the formation...
10 KB (779 words) - 10:34, 15 August 2024
hydroxylation of tyrosine, an amino acid, to l-DOPA (levodopa) and the oxidation of d-DOPA to dopaquinone which is then further metabolised to melanin...
16 KB (1,374 words) - 08:12, 11 March 2024
oxidative transformation of catechol derivative dopa to light absorbing dopaquinone to indole-5,6-quinone is clearly seen following the polymerization to...
20 KB (2,274 words) - 09:10, 28 July 2024