Figure 1

2-DE gels of whole cell proteomes from L. plantarum LC 56, LC 804 and 299 V cultured in standard and bile-stressing conditions. The figure shows representative 2-DE gel pictures (pH range: 4-7) of whole-cell protein lysates from early stationary phase of L. plantarum LC 56 (A and D), LC 804 (B and E), and 299 V (C and F) cultured without (A-C) and with (D-F) 3.6% (w/v) Oxgall. Spots exhibiting differential expression between strains in standard growth conditions and identified by LC-MS analysis are labeled (A-C), with a focus on expression changes after bile exposure for proteins previously reported as being involved in bile tolerance processes (D-F).