FIELD: biotechnology. SUBSTANCE: method involves screening of strain Streptomyces sp. G-473 VNIIA 2143 - a producer of rifamycin oxidase and development of method of enzyme preparing using strain Streptomyces sp. G-473. Enzyme isolation is carried out from cultural fluid by ultrafiltration concentration up to achievement of activity 120-130 U/ml. EFFECT: detection and isolation of strain indicated above. 3 cl, 2 tbl
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