2.6. Identification of proteins by liquid
chromatograph/tandem mass spectrometry
The resulting tryptic peptides were separated and
analyzed using reversed phase capillary high-performance
liquid chromatography (HPLC) directly coupled to a
Finnigan LCQ ion trap mass spectrometer [liquid
chromatography-tandem mass spectrometry (LC-MS/
MS)]. A 0.1 20 mm trapping and a 0.075 130 mm
resolving column were packed with Vydac 218 MS low
trifluoroacetic acid C18 beads (5 mm in size, 300A ° in pore
Figure 1. Cellular and membrane protein spot of C. glabrata strains resolved by 2D gel electrophoresis. Spots representing
differentially expressed proteins that were identified by LC-Ms/Ms peptide mass fingerprinting. (a) cellular protein spot of voriconazole
susceptible strain, (b) cellular protein spot of voriconazole SDD strain, (c) cellular protein spot of fluconazole susceptible
strain, (