Gramicidin A is a linear pentadecapeptide antibiotic produced by Bacillus brevis. The transmembrane protein contains a left-handed helix with alternating L and D residues.

Chromomycin A3 from Streptomyces griseus is an antibiotic exhibiting anti-bacterial, anti-fungal and antitumor activities.

Peptide antibiotic that prevents the binding of elongation factor G (EF-G) and GTP to the 50S ribosomal subunit.

Streptonigrin (SN) is an aminoquinone antitumour antibiotic.

Nikkomycin Z inhibits chitin synthase from converting UDP-GlcNAc into cell wall chitin due to its structural resemblance to UDP-N-acetylglucosamine.

Anthraquinone-derivative within St. John′s wort. Antibacterial effective against Gram-positive and Gram-negative bacteria.

Antifungal macrolactone antibiotic that inhibits protein tyrosine kinase.

Fungal metabolite with antineoplastic, antimitotic activity.