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  • Title: Adenosine aminohydrolase activity in the regenerating rat liver.
    Author: Sheid B.
    Journal: Arch Biochem Biophys; 1985 Apr; 238(1):259-62. PubMed ID: 3985621.
    Abstract:
    The specific activity of adenosine aminohydrolase in the regenerating rat liver is significantly increased 12 h after partial hepatectomy. There is a twofold increase in enzyme activity at 48 h, after which the activity begins to decline. However, increased values still persist 7 days postsurgery. The enzyme is located mainly in the soluble supernatant (90-95%) of the cell. The purified enzyme from 48-h regenerating liver and control liver has similar kinetic properties (Km 54-58 microM for adenosine), similar molecular weights (30,000-35,000), and are equally inhibited by an irreversible transition-state analog and a reversible competitive inhibitor. It is concluded that adenosine aminohydrolase in regenerating liver is an integral component of a salvage pathway designed for the reutilization of nucleotides, and thus helps maintain a "growth state" for the regenerating liver.
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