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  • Title: [The nature of the changes in the activity of water-soluble enzymes in action on the muscles of damaging agents. VI. Glyceraldehyde-3-phosphate dehydrogenase binding and enzyme adsorption by F-actin in ghost muscle fiber].
    Author: Stabrovskaia VI.
    Journal: Tsitologiia; 1991; 33(8):58-64. PubMed ID: 1821498.
    Abstract:
    A possibility of binding glyceraldehyde-3-phosphate dehydrogenase (GAPhDG) in frog (Rana temporaria L.) skeletal muscles was studied by measuring its solubilization in 0.15 M KCl and by its presence in isolated actomyosin. Using a 0.15 M KCl solution, more GAPhDG was extracted from intact muscles and muscles treated with heat at 38, 42 and 46 degrees C for 15 min than in a non-electrolyte medium. Actomyosin isolated from muscles reveals GAPhDG activity which cannot be removed by actomyosin reprecipitation. In myosin-, troponin- and tropomyosin-free single glycerinated muscle fibres (ghost fibres) GAPhDG absorption to F-actin was shown. It is suggested that under thermal injure of muscle cells, the increase in GAPhDG binding with thermolabile proteins of actomyosin complex may occur.
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