کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1355853 981069 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Enzymatic oxidation of manganese ions catalysed by laccase
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Enzymatic oxidation of manganese ions catalysed by laccase
چکیده انگلیسی

The principal possibility of enzymatic oxidation of manganese ions by fungal Trametes hirsuta laccase in the presence of oxalate and tartrate ions, whereas not for plant Rhus vernicifera laccase, was demonstrated. Detailed kinetic studies of the oxidation of different enzyme substrates along with oxygen reduction by the enzymes show that in air-saturated solutions the rate of oxygen reduction by the T2/T3 cluster of laccases is fast enough not to be a readily noticeable contribution to the overall turnover rate. Indeed, the limiting step of the oxidation of high-redox potential compounds, such as chelated manganese ions, is the electron transfer from the electron donor to the T1 site of the fungal laccase.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioorganic Chemistry - Volume 37, Issue 1, February 2009, Pages 1–5
نویسندگان
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