Reactivating Factor of Luteococcus japonicus subsp. casei: Isolation and Characterizationстатья
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Дата последнего поиска статьи во внешних источниках: 28 сентября 2017 г.
Аннотация:It has been shown that a producer strain of reactivating factor (RF) is identical to a typical strain
of Luteococcus japonicus DSM 10546 from the Propionibacteriaceae family according to the physiological and
biochemical properties and the sequencing of 16S rRNA fragments. A number of phenotypical differences
from the model strain allowed the producer strain to be considered a subspecies of Luteococcus japonicus, and
it was named Luteococcus japonicus subsp. casei. At cultivation of the producer, RF is secreted into the
medium and plays the role of a signaling molecule. RF antioxidant activities towards various organic radicals
may be a possible mechanism of its protective and reactivating effects.
Metabolites secreted by the L. casei producer strain into the culture medium were separated by a combination
of liquid chromatographies. Four components possessing biological activities were found. The most active
one was studied by MALDITOF mass spectrometry, which revealed that it is a polypeptide. Primary identi
fication of some amino acid residues was performed. Sugar residues were found in the structure.