Stereospecificity of Mushroom Tyrosinase Immobilized on a Chiral and a Nonchiral Support
作者:María Elisa Marín-Zamora、Francisco Rojas-Melgarejo、Francisco García-Cánovas、Pedro Antonio García-Ruiz
DOI:10.1021/jf0701178
日期:2007.5.1
mushroom tyrosinase are reported. The enantiomers L-tyrosine, DL-tyrosine, D-tyrosine, L-dopa, DL-dopa, D-dopa, L-alpha-methyldopa, DL-alpha-methyldopa, L-isoprenaline, DL-isoprenaline, L-adrenaline, DL-adrenaline, L-noradrenaline, and D-noradrenaline were assayed with tyrosinase immobilized on a chiral support (sorbitol cinnamate), whereas L-tyrosine, DL-tyrosine, D-tyrosine, L-dopa, DL-dopa, D-dopa, L-alpha-methyldopa
Early steps in the free radical polymerisation of 3,4-dihydroxyphenylalanine (dopa) into malanin
作者:Miles R. Chedekel、Edward J. Land、Ambler Thompson、T. George Truscott
DOI:10.1039/c39840001170
日期:——
Pulse radiolysis and flash photolysis-initiated one-electron oxidation of 3,4-dihydroxyphenylalanine (dopa) and other catecholamines have allowed the direct measurement of the kinetics of semiquinone disproportionation leading successively to the corresponding melanin precursors dopaquinones and dopachromes.