Accordingly, various non-proteinogenic (non-ribosomal) amino acids are found in katanosins, such as 3-hydroxyleucine, 3-hydroxyasparagine, allothreonine and 3-hydroxyphenylalanine.

[citation needed] Katanosin A and B differ in the amino acid position 7.

[citation needed] Katanosin antibiotics target the bacterial cell wall biosynthesis.

[4] They are highly potent against problematic Gram-positive hospital pathogens such as staphylococci and enterococci.

Their in-vitro potency is comparable with the current “last defence” antibiotic vancomycin.