商品编号


LS003789



品牌


Worthington



公司


Worthington Biochemical Corporation



公司分类


Products



Size

25 ku

商品信息
Polyphenol Oxidase (Tyrosinase)A lyophilized powder. Store at -20°C. Requires special shipping: Ice Pack.Store at -20°C.REQUIRES SPECIAL SHIPPING: ICE PACK≥500 units per mg dry weight
Source:
Mushrooms
I.U.B.: 1.14.18.1
Polyphenol oxidase (tyrosinase) is a bifunctional, copper-containing oxidase having catecholase and cresolase activity. It is respons
IBL
e for browning reactions through the phylogenetic scale. The enzyme has a molecular weight of 128 kDa. It is a tetramer containing four atoms of copper per molecule and two binding sites for aromatic compounds including phenolic substrates. There is a distinct binding site for oxygen. The optimum pH range is 6-7.
Unit Definition
: One unit causes an increase in the absorbance at 280 nm of 0.001 per minute at 25°C, pH 6.5, using L-tyrosine as substrate.