[Isolation and identification of the antibiotics amicetin and nebramycin formed by a Streptomyces coeruleoaurantiacus 4009 culture]. 
It was found that Str.  coeruleoaurantiacus, strain 4009 produced antibiotics 4009-A and 4009-B belonging to different groups.  Antibiotic 4009-A was identified as amicetin belonging to the group of pyrimidine bases and antibiotic 4009-B as the nebramycin complex belonging to the group of aminoglycosides.  The identity of the antibiotics was confirmed by the physico-chemical constants, spectral and chromatographic characteristics and their chemotherapeutic activity.