Table 2.
Overlap of marker proteins up-regulated by daptomycin with the proteome response library
Marker protein | Daptomycin | Nisin | Gallidermin | Mersacidin | Valinomycin | Gramicidin A | Gramicidin S | MP196 | Aurein 2.3 |
LiaH (CWB marker) | x | x | x | x | x | x | x | ||
LiaR | x | ||||||||
PspA (CM marker) | x | x | x | x | x | x | x | x | |
ResD | x | ||||||||
IspH | x | ||||||||
Total markers | 8 | 8 | 21 | 13 | 20 | 5 | 17 | 27 | 33 |
CM, cell membrane; CWB, cell wall biosynthesis. LiaH is a specific marker for inhibition of membrane-bound steps of lipid II synthesis, and PspA is a specific marker for membrane stress. Note that in contrast to daptomycin, other membrane-active antibiotics typically have a higher number of total marker proteins.