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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Detection of iron-induced proteins and their effect on anthracycline production in submerged culture of Streptomyces coeruleorubidus
 MICHALCOVÁ, Zuzana
In this bachelor's thesis, proteins from the group of enzymes - esterases and their possible induction after the addition of iron to the culture medium were analyzed. Furthermore, the effect of the addition of Fe2+ cations on daunomycin production under submersion cultivation conditions of Streptomyces coeruleorubidus culture was evaluated. The work is divided into two parts. The first part introduced the genus actinobacteria called Streptomyces, their occurrence, properties and possible benefits due to the production of secondary metabolites. In the second, experimental part, the use of the Streptomyces coeruleorubidus strain was described. The effect of iron addition was evaluated by HPLC analysis and native polyacrylamide electrophoresis (native PAGE). HPLC analysis showed that the addition of iron in the form of FeSO4 to the medium increased daunomycin production by approximately 21.5-fold. During native PAGE and after staining, proteins, i.e. esterases, most likely from the groups of and esterases, were detected. Those were more or to a greater extent produced by the Streptomyces coeruleorubidus if the medium contained iron.
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