Polyphenol Oxidase

Source:
Mushrooms (Agaricus bisporus)
CAS:
9002-10-2
EC:
1.14.18.1

I.U.B.: 1.14.18.1

Polyphenol oxidase (tyrosinase) is a bifunctional, copper-containing oxidase having catecholase and cresolase activity. It is responsible 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.

Polyphenol Oxidase Products

Description
Activity
Code
Cat. #
Price
Size
Description
Polyphenol Oxidase (Tyrosinase)
Source:
Mushrooms (Agaricus bisporus)
A lyophilized powder. Store at -20°C. Requires special shipping: Ice Pack.
Store at -20°C.
Ice Pack required
Activity
≥500 units per mg dry weight
Code
TY
Cat. #
LS003789