Keratanase II, bacillus circulans, expressed in E.coli 具有转糖基活性,能有效催化 α(2→3)-sialylated 6,6′-di-sulfo-LacNAc 与两种糖基受体:6-sulfo-Lewis X 和 6,6'-di-sulfo-LacNAc 衍生物,产生唾液酸磺基六糖和唾液酸磺基五糖。
Fraxidin is a class of coumarin. It is isolated from the roots of Jatropha podagrica. It also shows antibacterial activity against Bacillus subtilis with an inhibition zone of 12 mm at a concentration of 20 µg/disk.