[Purification and some properties of RNase from Actinomyces sp., strain 236, producing mono- and oligonucleotides with 5'-phosphate terminal groups].
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Actinomyces↗
Biomedical subjects
O I Artamonova
Publications and source records attributed to O I Artamonova.
[RNAase from Actinomyces sp., strain 236, forming fragments with terminal 5'-phosphate (nuclease A236)].
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Actinomyces↗
[Mycetins B1, B2 and C. New antibiotic of rhodomycin group].
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Anti-Bacterial Agents↗
[Effect of CaC03 on the phosphatase activity in a culture of Actinomyces sp., strain 5 (coelicolor group) producing exonuclease A5].
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Actinomyces↗
[Extracellular nucleases in various taxonomic groups of actinomycetes].
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Actinomyces↗
[Study of the pigments of Actinomyces rutilosus Krass strain I-22].
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Actinomyces↗
[Spore germination in actinomycetes].
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Actinomyces↗
[On the nature of pigment antibiotics of some new species of violet actinomycetes].
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Anti-Bacterial Agents↗
[Electron microscopic study of the surface of Actinomyces chrysomallus spores by the freeze etching method].
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Freeze Etching↗
[Electron microscopic structure of the mycelium of Actinomyces chrysomallus, the producer of the antibiotic chrysomallin, during the stab fermentation process].
Ultrastructural changes in the mycelium of Actinomyces (Streptomyces) chrysomallus 2703 producing the antibiotic chrysomallin in the process of submerged fermentation are described. When the antibiotic was produced at a high rate, most hyphae remained viable for a long period of time and had the ultrastructure typical of the young cells of actinomycetes. At the same time, a number of degenerative changes due to aging were observed; these resulted in autolysis. A decrease in the antibiotic titre was accompanied with intensive sporulation in a considerable number of the submerged hyphae. Structural changes in the sporeforming hyphae distinctly differed from those in the vegetative ones: the cell walls became thicker and numerous septa were formed. The exogenous formation of submerged spores in the culture under study has been studied in detail for the first time.
Culture Media↗