Lipoglycan profiles of wild-type and mutant strains of C. glutamicum.
A. The left-hand and middle panels illustrate lipoglycans extracted from wild-type, mutant and complemented strains analysed using SDS-PAGE and visualized using a Pro-Q emerald glycoprotein stain (Invitrogen). The right-hand panel illustrates purified Cg-LAM and Cg-LM from C. glutamicumΔmptC and C. glutamicumΔmptD, respectively, in comparison with wild-type C. glutamicum lipoglycans. Lipoglycan profiles are represented with standard molecular weight markers of glycoproteins of 180, 82, 42 and 18 kDa.
B. MALDI-TOF-MS spectra of Cg-LM and Cg-LAM from different strains of C. glutamicum. MALDI-TOF-MS spectra were acquired in the linear negative mode with delayed extraction using 2,5-dihydrobenzoic acid as a matrix.