• Tyrocidine packaged and labeled in glass vial.

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SKU: T105

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Tyrocidine is a family of eight cationic cyclic decapeptides produced by Bacillus brevis, first reported by Dubos in 1941. Tyrocidines exhibit broad antibiotic activity against Gram positive and negative bacteria and are the major component of the tyrothricin complex which is used for treatment of topical infections.

    CAS Number


    Molecular Formula

    C66H87N13O13 (for Tyrocidine A)

    Molecular Weight


    Mechanism of Action

    The mechanism of action of tyrocidines is not fully understood; however, they are known to act by disturbing lipid bilayers of the bacterial cell membrane.

    Storage Conditions




    White solid



    Studies on a bacterial agent extracted from a soil bacillus. Dubos R.J. J. Exp. Med. 1939, 70, 11.

    The amino-acid composition of tyrocidine. Gordon A.H. et al. Biochem. J. 1943, 37, 313.

    The lytic action of tyrothricin and its derivatives on Stapylococcus aureus. Fong J. & Krueger A.P. J. Gen. Physiol. 1950, 33, 311.

    Interaction between the antibiotic tyrocidine and DNA in vitro. Schazschneider B. et al. Nature 1974, 249, 757.

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