title: Studies on new aminoglycoside antibiotics, istamycins, from an actinomycete isolated from a marine environment. II. Possible involvement of plasmid in istamycin production.
abstract: Acriflavine treatment of an istamycin-producing Streptomyces tenjimariensis strain designated SS-939 resulted in a high frequency of isolates with reduced istamycin production. Some of these were shown to have lost a particular plasmid present in the parent strain. Istamycin production by these isolates was largely restored by the addition of 2-deoxystreptamine (DOS) to the medium whereas the effect of DOS was small in the strain SS-939. Sodium palmitate also stimulated production, especially when added together with DOS. These stimulative effects by DOS and palmitate, however, were not exhibited in the presence of glucose (1.0%).
mesh_terms: D000166:Acridines / Q000494:pharmacology*; D000167:Acriflavine / Q000494:pharmacology*; D000617:Aminoglycosides / Q000096:biosynthesis; D000900:Anti-Bacterial Agents; D006595:Hexosamines / Q000494:pharmacology; D010168:Palmitates / Q000494:pharmacology; D010957:Plasmids; D013302:Streptomyces / Q000378:metabolism*
chemical_list: D000166:Acridines; D000617:Aminoglycosides; D000900:Anti-Bacterial Agents; D006595:Hexosamines; D010168:Palmitates; D000167:Acriflavine; C022949:istamycins; C007265:2-deoxystreptamine