Altered proteolytic cleavage of human growth hormone as a result of deamidation.
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Altered proteolytic cleavage of human growth hormone as a result of deamidation.
The major desamido form of human growth hormone (hGH) results from deamidation of asparagine 152. Peptide mapping and amino acid sequencing were used in the identification. This desamido form (hGHAsp152) could be produced by incubation of the undeamidated hormone in an alkaline medium. Another minor deamidated form which contained glutamic acid at 137 (hGHGlu137) also was identified in preparat...
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Deamidation of proteins is probably one of the most common chemical degradation pathways in protein pharmaceuticals. The reaction rate for deamidation of human growth hormone (hGH) is particularly pH-dependent and occurs typically faster at neutral and alkaline pH [1]. Protamine from salmon is an extremely basic peptide due to its high arginine content. It is isolated from sperm cells of salmon...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1981
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)68453-x