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  • Title: [Ultrastructural changes in the mycelia of Actinomyces hygroscopicus var. var. enhygrus--a proteolytic enzyme producer--during submerged fermentation].
    Author: Kuimova TF, Sokolov AA.
    Journal: Mikrobiologiia; 1977; 46(1):155-60. PubMed ID: 870801.
    Abstract:
    Ultrastructural changes were found to occur in the mycelium of Actinomyces hygroscopicus, strain 33x, which produced an exocellular proteolytic enzyme during submerged fermentation, in both laboratory and semiindustrial conditions (in 100-1 fermenters). In the course of the enzyme accumulation, numerous vacuoles appeared in the hyphae, some hyphae became wider, and the cell walls were more loose. The greatest structural changes were found in the intracytoplasmic membrane systems. The ultrastructural changes of the mycelium are not presumably connected with the accumulation of the enzyme, but are the result of the differentiation of cellular structures during aging of the cells and their transition to the stage of autolysis.
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