日韩av大片在线观看欧美成人不卡|午夜先锋看片|中国女人18毛片水多|免费xx高潮喷水|国产大片美女av|丰满老熟妇好大bbbbbbbbbbb|人妻上司四区|japanese人妻少妇乱中文|少妇做爰喷水高潮受不了|美女人妻被颜射的视频,亚洲国产精品久久艾草一,俄罗斯6一一11萝裸体自慰,午夜三级理论在线观看无码

Recombinant lysyl endonuclease （Lys-C） is derived from Achromobacter and expressed in Escherichia coli. This product is a serine protease that can highly specifically hydrolyze amides, esters and peptide bonds on the carboxyl side of lysine. The optimal reaction pH is 9.0-9.5, the optimal reaction temperature is 30-37°C, and it can still maintain high enzyme activity in the presence of 4M urea or 0.1% SDS.