英文名稱：Polyphenol oxidase；Tyrosinase from mushroom；Catechol Oxidase；Monophenol Monooxygenase；Monophenol, dihydroxyphenylalanine:oxygen oxidoreductase 
其他名稱：酪氨酸酶；酥氨基酸酶；多聚苯酚氧化酶；兒茶酚氧化酶
CAS號：9002-10-2
級別：BR
比活力：≥500units/mg protein
活力定義：在含有L-二羥苯丙氨酸或兒茶酚和L-抗壞血酸的3ml反應混合液中，在pH值6.5，25℃時，每1min內(nèi)ΔA265變化為0.001為一個酶活單位
PH：6.0～7.0
性狀(以下信息僅供參考)：粉末。一類可催化含酚基化合物(如酪氨酸、酚類化合物等)氧化成醌的酶。此類酶廣泛存在于自然界，植物中分布很廣，如馬鈴薯、茶葉、漆樹乳汁中含量相當高。高等動物的皮膚、毛發(fā)、角膜中的黑色素也是由于此酶氧化酪氨酸所生成的產(chǎn)物。蘑菇等菌類及其他微生物中也產(chǎn)生此類酶。通常從野蘑菇中提取，系生物催化劑之一，含有銅離子的蛋白質(zhì)。分子量約128 KDa 。等電點<5.0；含氮量約13.6％。含銅量約0.25％。紫外吸收峰在273nm和330nm處。催化作用適宜溫度25℃。
用途：本品僅供科研，不得用于其它用途。(以下用途僅供參考)它催化酪氨酸氧化成多巴和多巴進一步氧化成能產(chǎn)生黑色素的前體物——多巴醌。
保存：-20℃
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