Bafilomycin B1, a macrolide antibiotic isolated from Streptomyces sp, acts as an inhibitor of K+-dependent ATPase of E. coli. It also inhibits Gram-positive bacteria and fungi.
Polymyxin B1, a potent antimicrobial lipopeptide derived from Bacillus polymyxa, has potential for treating multidrug-resistant Gram-negative bacterial infections.
Enniatin B1 crosss the blood-brain barrier. Enniatin B1 decreases the activation of ERK (p44 p42). Enniatin B1 inhibits moderately TNF-α-induced NF-κB activation.Enniatin B1 is a Fusarium mycotoxin. Enniatin B1 inhibits acyl-CoA: cholesterol acyltransferase (ACAT) activity with an IC50 of 73 μM in an enzyme assay using rat liver microsomes.