Type A trichothecene mycotoxin
A basic cytotoxic polypeptide from Streptomyces netropsis. Netropsin binds to A-T sequences of DNA.
Nigericin is a polyether antibiotic which affects ion transport and ATPase activity in mitochondria.
Nivalenol is a type - B trichothecene mycotoxin produced by various Fusarium species, such as Fusarium cerealis, Fusarium graminearum, Fusarium nivale.
Nonactin from Streptomyces Griseus: a mixture of the two homolog macrotetrolide antibiotics: Nonactin, Monactin. Nonactin is not less than 80%, ballanced by Monactin only.