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  • Title: A new immunoblotting assay for thymidylate synthetase and its application to the regulation of enzyme activity in regenerating rat liver.
    Author: Tsukamoto I, Nakata R, Miyoshi M, Taketani S, Kojo S.
    Journal: Biochim Biophys Acta; 1988 Feb 17; 964(2):254-9. PubMed ID: 3342259.
    Abstract:
    A highly sensitive and specific immunoblot assay has been developed to quantitate the content of rat liver thymidylate synthetase (EC 2.1.1.45). Applying the method, it is demonstrated that the increase of the activity of thymidylate synthetase in liver regeneration after partial hepatectomy is due to the de novo synthesis of the enzyme protein. Administration of cycloheximide, phenoxybenzamine, phorbol 12-myristate 13-acetate, nifedipine, dexamethasone or indomethacin to partially hepatectomized rats prevented the synthesis of thymidylate synthetase in regenerating liver. Thyroparathyroidectomy also inhibited the increase of the enzyme in liver regeneration. These observations are discussed in relation to the signal transduction concerning the alpha 1-receptor, which was shown to regulate liver regeneration in our previous papers.
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