peptide antibiotic thusin antibiotic_resistance ARO:3003903 Thusin is a two-component lantibiotic isolated from B. thuringiensis strain BGSC 4BT1, exhibiting antimicrobial activity against several Gram-positive pathogens. Bacillus cereus, Listeria monocytogenes, Staphylococcus aureus (MRSA), Mammaliicoccus sciuri, Enterococcus faecalis, and Streptococcus pneumoniae have all shown susceptibility to Thusin, with inhibition activities greater than Vancomycin or other lantibiotics.