Expression of abaecin in Bacillus subtilis 1A747. The analysis of purified abaecin on Tricine-SDS-PAGE and Western Blot revealed its molecular mass to be about 4 kDa. (a) SDS-PAGE analysis of abaecin expressed. Lane 1, total cell protein (uninduced); lane 2, total cell protein (induced); lane M, low-range molecular mass marker (TaKaRa, Shiga, Japan). (b) Western blot analysis of abaecin expressed. Lane 3, total cell protein (uninduced); lane 4, total cell protein (induced). The arrow indicates the position of recombinant abaecin.