Article
Characterization of the deamidated forms of recombinant hirudin.
Biochemistry - 8 Sept 1992
Tuong A, Maftouh M, Ponthus C, Whitechurch O, Roitsch C, Picard C
Abstract excerpt
Recombinant hirudin variant rHV2-Lys 47 (MW = 6906.5) was intentionally deamidated by incubation in pH 9 phosphate buffer at 37 degrees C. Anion-exchange HPLC analysis showed that 11 forms could be generated. These were isolated and purified by combined anion-exchange and reversed-phase HPLC. Acid-catalyzed carboxyl methylation was used to introduce a mass shift of +15 amu per deamidated residue present in the...
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