FIG. 2.

2-DE (pH gradient 4 to 7) of cytosolic proteins of S. thermophilus LMG 18311 cocultivated in milk with L. delbrueckii subsp. bulgaricus at early (2 h 30 min) (A) and late (5 h 30 min) (B) exponential phases. A total of 300 μg of proteins were loaded in the first dimension. Proteins whose abundance significantly varied between the two conditions are shown by the arrows as well as the name of their corresponding genes (proteins whose abundance decreases or increases at the early versus late exponential phase are underlined or not underlined, respectively).