Lanopepden mesylate (GSK 1322322 mesylate) is a peptide deformase ( PDF ) inhibitor. Lanopepden mesylate has antibacterial activity by inhibiting the activity of PDF , preventing the correct synthesis of bacterial proteins. Lanopepden mesylate mainly targets Gram-positive bacteria. Lanopepden mesylate can be used in the study of acute bacterial skin and skin structural infections.