Method for making a polypeptide derivative

Chemistry: natural resins or derivatives; peptides or proteins; – Peptides of 3 to 100 amino acid residues – Chemical aftertreatment – e.g. – acylation – methylation – etc.

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530402, C07K 1107

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active

056774222

ABSTRACT:
A method for making a homogeneous succinylated polypeptide is disclosed. The method can be carried out by adding a succinyl-containing compound to a polypeptide solution, followed by raising the pH of the polypeptide solution to a pH of between about pH 10 to pH 12.5. The succinylation reaction between the succinyl-containing compound and free amino groups of the polypeptide is essentially complete upon raising the polypeptide solution pH to the alkaline pH.

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Klapper, M. H., et al., "Acylation with Dicarboxylic Acid Anhydrides", Methods in Enzymology, vol. 25, pp. 531-536 (1972).
Shiao, D.D.F., et al., "Modification of Protein Properties by Change in Charge", Eur. J. Biochem, vol. 29, pp. 377-385 (1972).
Hettiarachchi, K., et al. "Capillary Electrophoresis Anaysis of Concanavalin A and its Succinyl derivative", J. of Pharm. and Biomed. Analysis, vol. 9, pp. 835-841 (1991).
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