Activation of carcinogens by peroxidase. Horseradish peroxidase-mediated formation of benzenediazonium ion from a non-aminoazo dye, 1-phenylazo-2-hydroxynaphthalene (Sudan I) and its binding to DNA.
FEBS Lett
; 232(2): 387-90, 1988 May 23.
Article
em En
| MEDLINE
| ID: mdl-3378630
ABSTRACT
Horseradish peroxidase in the presence of hydrogen peroxide (HRP/H2O2) oxidizes a carcinogenic non-aminoazo dye, 1-phenylazo-2-hydroxynaphthalene (Sudan I) to the ultimate carcinogen, which binds to calf thymus DNA. The principal product of Sudan I oxidation by the HRP/H2O2 system is the benzenediazonium ion. Minor products are hydroxy derivatives of Sudan I, in which the aromatic rings are hydroxylated. The principal oxidative product (the benzenediazonium ion) is responsible for the carcinogenicity of Sudan I, because this ion, formed from this azo dye, binds to DNA.
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Base de dados:
MEDLINE
Assunto principal:
Peroxidases
/
DNA
/
Compostos de Diazônio
/
Peroxidase do Rábano Silvestre
/
Naftóis
Limite:
Animals
Idioma:
En
Revista:
FEBS Lett
Ano de publicação:
1988
Tipo de documento:
Article