Bacitracin zinc
Bacitracin Zinc is the zinc salt form of bacitracin, a complex of cyclic polypeptide antibiotics, mainly bacitracin A, produced by spore-forming organisms belonging to the licheniformin group of the Bacillus subtilis with antibacterial activity. Bacitracin zinc binds to C55-isoprenyl pyrophosphate, a biphosphate lipid transport molecule that carries the building blocks of the peptidoglycan bacterial cell wall, thereby interfering with the enzymatic dephosphorylation of the C55-isoprenyl pyrophosphate and preventing peptidoglycan synthesis which leads to cell lysis.