[Antibiotic properties of cultures of the Streptomyces coelicolor group that suppress the growth of strains of the same species].

Antimicrobial spectrum of 45 cultures of the S. coelicolor group with respect to closely related strains and other streptomycete species was studied. The spectrum of 7 cultures was narrow and they inhibited closely related strains and certain streptomycete species. These cultures produced antibiotic substances of bacteriocin-like nature. The bacteriocin-like substances of the cultures differed in sensitivity to temperature and proteolytic enzymes and capacity for dialysis through cellophane membranes. Biosynthesis of the antibiotic substances increased after exposure to UV light.