Looking for an antibiotic effective against multiresistant MRSA,
we screened the culture supernatant collections of Actinobacteria.
VISA strain Mu50 and MSSA strain FDA 209P were employed as
the targets for antimicrobial activity. Mu50 represents multidrugresistant
MRSA with a VISA phenotype [6] (Table 1). FDA 209P is
one of the oldest S. aureus strains isolated before the golden age of
antibiotics, retaining susceptibility to practically all antibiotics