The influence of hydroquinone on tyrosinase kinetics
In vitro studies, using combined spectrophotometry and oximetry together with hplc/ms examination of the products of tyrosinase action demonstrate that hydroquinone is not a primary substrate for the enzyme but is vicariously oxidised by a redox exchange mechanism in the presence of either catechol,...
Main Authors: | , , |
---|---|
Format: | Journal article |
Language: | English |
Published: |
2012
|
_version_ | 1826271156645134336 |
---|---|
author | Stratford, M Ramsden, C Riley, P |
author_facet | Stratford, M Ramsden, C Riley, P |
author_sort | Stratford, M |
collection | OXFORD |
description | In vitro studies, using combined spectrophotometry and oximetry together with hplc/ms examination of the products of tyrosinase action demonstrate that hydroquinone is not a primary substrate for the enzyme but is vicariously oxidised by a redox exchange mechanism in the presence of either catechol, l-3,4-dihydroxyphenylalanine or 4-ethylphenol. Secondary addition products formed in the presence of hydroquinone are shown to stimulate, rather than inhibit, the kinetics of substrate oxidation. © 2012 Elsevier Ltd. All rights reserved. |
first_indexed | 2024-03-06T21:52:13Z |
format | Journal article |
id | oxford-uuid:4bb01f9f-6a37-4c76-8327-e9d559206ca5 |
institution | University of Oxford |
language | English |
last_indexed | 2024-03-06T21:52:13Z |
publishDate | 2012 |
record_format | dspace |
spelling | oxford-uuid:4bb01f9f-6a37-4c76-8327-e9d559206ca52022-03-26T15:45:00ZThe influence of hydroquinone on tyrosinase kineticsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:4bb01f9f-6a37-4c76-8327-e9d559206ca5EnglishSymplectic Elements at Oxford2012Stratford, MRamsden, CRiley, PIn vitro studies, using combined spectrophotometry and oximetry together with hplc/ms examination of the products of tyrosinase action demonstrate that hydroquinone is not a primary substrate for the enzyme but is vicariously oxidised by a redox exchange mechanism in the presence of either catechol, l-3,4-dihydroxyphenylalanine or 4-ethylphenol. Secondary addition products formed in the presence of hydroquinone are shown to stimulate, rather than inhibit, the kinetics of substrate oxidation. © 2012 Elsevier Ltd. All rights reserved. |
spellingShingle | Stratford, M Ramsden, C Riley, P The influence of hydroquinone on tyrosinase kinetics |
title | The influence of hydroquinone on tyrosinase kinetics |
title_full | The influence of hydroquinone on tyrosinase kinetics |
title_fullStr | The influence of hydroquinone on tyrosinase kinetics |
title_full_unstemmed | The influence of hydroquinone on tyrosinase kinetics |
title_short | The influence of hydroquinone on tyrosinase kinetics |
title_sort | influence of hydroquinone on tyrosinase kinetics |
work_keys_str_mv | AT stratfordm theinfluenceofhydroquinoneontyrosinasekinetics AT ramsdenc theinfluenceofhydroquinoneontyrosinasekinetics AT rileyp theinfluenceofhydroquinoneontyrosinasekinetics AT stratfordm influenceofhydroquinoneontyrosinasekinetics AT ramsdenc influenceofhydroquinoneontyrosinasekinetics AT rileyp influenceofhydroquinoneontyrosinasekinetics |