Nonactin from Streptomyces Griseus is a mixture of the two homolog macrotetrolide antibiotics: Nonactin and Monactin. The purity of the homolog is not less than 99% purity by TLC. This macrotetrolide antibiotic acts as a monovalent cation ionophore and demonstrates high selectivity for ammonium and potassium.
* Related Source
Nonactin hinders intracellular glycosylation in virus-infected baby hamster kidney cells. JM Lee, JG Kim, et al, Jan 2010; 3(1): 115-9.