We describe the actinomycete strain IMV-70 isolated from the soils of Kazakhstan, which produces potent antibiotics with high
levels of antibacterial activity. After the research of its morphological, chemotaxonomic, and cultural characteristics, the strain with
potential to be developed further as a novel class of antibiotics with chemotherapeutics potential was identified as Streptomyces sp.
IMV-70. In the process of fermentation, the strain Streptomyces spp. IMV-70 produces the antibiotic no. 70, which was isolated
from the culture broth by extraction with organic solvents. Antibiotic compound no. 70 was purified and separated into individual
components by HPLC, TLC, and column chromatography methods. Themain component of the compound is the antibiotic 70-A,
which was found to be identical to the peptolide etamycin A. Two other antibiotics 70-B and 70-C have never been described and
therefore are new antibiotics. The physical-chemical and biological characteristics of these preparations were described and further
researched. Determination of the optimal growth conditions to cultivate actinomycete-producer strain IMV-70 and development
of methods to isolate, purify, and accumulate preparations of the new antibiotic no. 70 enable us to research further the potential
of this new class of antibiotics.