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  • Title: Localization of arginyl residues modified with butanedione in glyceraldehyde-3-phosphate dehydrogenase from pig muscle.
    Author: Banaś T, Krotkiewska B, Marcinkowska A, Wolny M.
    Journal: Acta Biochim Pol; 1983; 30(3-4):325-34. PubMed ID: 6673425.
    Abstract:
    Glyceraldehyde-3-phosphate dehydrogenase (EC 1.2.1.12) from pig muscle was inactivated by incubation with butanedione in triethanolamine buffer, pH 8.3. The inactivation was reversible after short treatment with butanedione; it became irreversible after 12-15 h, with a concomitant loss of two arginyl residues per subunit. The modified enzyme was digested with TPCK-trypsin and the peptides were purified by chromatography and electrochromatography. Two new peptides were obtained as the result of modification. From their partially determined sequence the modified arginyl residues were identified as Arg-13 and Arg-231 in the primary structure of pig muscle enzyme.
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