A-54556B is a natural acyldepsipeptide (ADEP) antibiotic isolated from the fermentation broth of
S. hawaiiensis.
1 Like the closely related ADEP, A-54556A , A-54556B is effective against Gram-positive bacteria, including penicillin-resistant
S. aureus.
1 A-54556B is also effective against many strains of anaerobic bacteria.
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