Removal of protein A from antibody preparations

Chemistry: natural resins or derivatives; peptides or proteins; – Proteins – i.e. – more than 100 amino acid residues – Blood proteins or globulins – e.g. – proteoglycans – platelet...

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530416, 530417, 530412, 530413, C07K 322, C07K 318

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active

049837222

ABSTRACT:
Protein A is selectively isolated from an antibody--Protein A mixture by exposing the mixture to an anion exchange material under conditions sufficient to adsorb both components and then sequentially eluting the antibodies and protein A under conditions of increasing ionic strength. Resulting antibody preparations have less than about 15 ng of Protein A per mg of antibody.

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