| [echinomycin production by actinomadura sp. ina 654]. | an actinomycete strain designated as actinomadura sp. ina 654 was isolated from a chernozem soil sample in the voronezh region by the soil sample treatment with millimetric waves (ehf band). the strain produced an antibiotic complex of 2 components, named a-654-i and a-654-ii. investigation of their physico-chemical properties showed that a-654-i was identical to echinomycin, a heteropeptide lactone of the quinoxaline group with antitumor activity, while a-654-ii proved to be likely a new natura ... | 2006 | 18030784 |