Enhancement of Vitamin K2 Efflux in Bacillus subtilis Natto via a Potential Protein Receptor for Increased Yield

Figure 6

Effects of culture conditions on the expression level of bslA. (a) The expression of BslA at different initial pH values (at 37°C for 48 h). (b) The expression of bslA at different temperatures (at initial pH 8.0 for 48 h).

(a)

(b)