Catalyzed Oxidation by Rhus Vernicifera Laccase(ⅹⅢ) Effects of Fe2+Ion on the Catalytic Oxidation by Laccase

Abstract

Abstract: The effects of FeSO₄on the oxidation of 5,6-dibromo 2,3-dicyanohydroquinone(DDBQH₂) catalyzed by Rhus vernicifera laccase were studied spectrophotometryly under condition of pH4.50. The results show that under the condition of experiments, SO₄^2-ion has little effect on the enzymatic reaction, but Fe²⁺ion has obvious inhibition, the nature of inhibition is competitive type. The results demonstrate that the inhibition is realized through the reduction of product of enzymatic reaction by Fe²⁺ion.

Key words: Rhus vernicifera laccase, Fe²⁺ion, Competitive inhibition, Spectrophotometry

CLC Number:

Q554

TrendMD:

TU Chu-Qiao, LIANG Hong, WANG Guang-Hui . Catalyzed Oxidation by Rhus Vernicifera Laccase(ⅹⅢ) Effects of Fe²⁺Ion on the Catalytic Oxidation by Laccase[J]. Chem. J. Chinese Universities, 1999, 20(2): 243.

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Catalyzed Oxidation by Rhus Vernicifera Laccase(ⅹⅢ) Effects of Fe²⁺Ion on the Catalytic Oxidation by Laccase

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