1.
Biotechnol Prog
; 21(3): 751-5, 2005.
Artigo
em Inglês
| MEDLINE
| ID: mdl-15932252
RESUMO
Beef liver catalases showed peroxidative activity using 2,2'-azino-bis-(3-ethylbenzthiazoline)-6-sulfonic acid as the electron donor and hydrogen peroxide as the acceptor at a pH of 5. This activity was not observed at pH 7. The reaction depended on acetate concentration, although succinate and propionate could partly replace the acetate as a catalyst. Other haem proteins also catalyzed a peroxidative effect. The reaction using syringaldazine or the coupling between dimethylaminobenzoic acid and 3-methyl-2-benzothiazolinone hydrazone was less effective and less sensitive. Evidence is presented that the reaction is associated with a conformational change of the catalase.