Refolding of misfolded insulin-like growth factor-I

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Hormones – e.g. – prolactin – thymosin – growth factors – etc.

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530418, 530420, 530422, 530424, 435 694, 4351723, 4352523, 4353201, C07K 14475, C12N 1518

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056633041

ABSTRACT:
A composition is provided comprising about 0.1 to 15 mg/mL of a polypeptide in a buffer having a pH of about 7-12 comprising about 5-40% (v/v) of an alcoholic or polar aprotic solvent, about 0.2 to 3M of an alkaline earth, alkali metal, or ammonium salt, about 0.1 to 9M of a chaotropic agent, and about 0.01 to 15 .mu.M of a copper or manganese salt. The buffer is suitably used in a method for refolding improperly folded polypeptides.

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