Taxonomy of Producing Organism, and Production, Isolation, Physico-chemical Properties and Biological Activities of Cirratiomycin A and B

摘要: The new peptide antibiotics have been obtained from the culture filtrate of a streptomycete, strain 248-Sq2, isolated soil sample collected at Nagano Prefecture, Japan.On basis taxonomic studies, producing organisms is designated as Streptomyces cirratus. Two active principles are named cirratiomycin A and B.These exhibit narrow range activities against Lactobacillus casei some strains Streptococcus Mycobacterium.