virginiamycin S1

Virginiamycin S1 is a cyclodepsipeptide antibiotic and one of the two major components of the streptogramin antibiotic complex known as virginiamycin, which is produced by various Streptomyces species including Streptomyces virginiae. It belongs to the streptogramin B group and acts as a macrolide antibiotic. Virginiamycin S1 inhibits bacterial protein synthesis by binding to the 50S ribosomal subunit at the peptidyl transferase center, thereby blocking aminoacyl-tRNA binding and peptide bond formation. This action disrupts protein synthesis in gram-positive bacteria, leading to bacteriostatic or bactericidal effects depending on context. Virginiamycin (as a mixture of M1 and S1) is used primarily in veterinary medicine for treating infections with gram-positive organisms and as a growth promoter in cattle, swine, and poultry. It also finds use in industrial fermentation processes such as bioethanol production to prevent microbial contamination[2][3][4][5][8].

Other names

staphylomycin Svirginiamycin factor Svirginiamycin S