KcsA是由链霉菌中提取出来的，其属于放线菌。链霉菌可以分泌抗生素！

KcsA has provided important insight into the behavior of other important voltage conducting proteins such as the drosophila(果蝇)-derived Shaker and the human hERG potassium channel.

重磅，细菌的离子通道的功能也是信号传导！

http://www.guancha.cn/Science/2015_10_24_338746.shtml

their work is on YugO, the only experimentally described potassium channel in B. subtilis.