FIG. 2.
(A) Immunoblot of membrane (M) and cytoplasmic (C) fractions from S. mutans SP2 grown in SMM with 1% glucose as the sole carbon source at 37°C to the mid-log growth phase (lanes 1 and 2) and to stationary phase (lanes 3 and 4). The bands corresponding to SGP and GAPDH are indicated with arrows. (B) Densitometric quantitation of the relative amounts of SGP in the membrane and cytoplasmic fractions.