Fig. 2

2-D gel profiles of C. violaceum expressed proteins under stresses. C. violaceum was cultured for 7 h of exponential growth under stress-conditions: a Luria Bertani (LB) medium at pH 7.0 (defined as reference gel); b LB at pH 4.0; c LB at pH 9.0 and d M9 minimum medium at pH 7.0. The expressed proteins were submitted to isoelectric focusing on pH 3.0–11.0 gradient strips and split onto 12 % polyacrylamide gels. Selected spots for each condition (numbered 1 to 20) were identified by MALDI/MS