安特百货

巨大芽孢杆菌宿主菌，不含蛋白酶NprM，但是能利用木糖。

Knockout of the major extracellular protease gene nprM   of B. megaterium DSM 319 resulted in B. megaterium MS941. This strain only shows 1.5% of the wild-type extracellular protease activity and thus is well suited for extracellular protein production。