Fig. 4From: Heterologous expression of nattokinase from B. subtilis natto using Pichia pastoris GS115 and assessment of its thrombolytic activitySDS-PAGE analysis of NK-Bs secreted into the supernatant during high-density fermentation. M: protein molecular weight marker (the molecular weight of each band is indicated on the left); lanes 1–9: cell culture supernatant after induction with 1% methanol for 12, 24, 36, 48, 60, 72, 84, 96, and 108 h, respectivelyBack to article page