| Description |
Protein A is a cell wall protein of Staphylococcus aureus. Due to its high affinity with the Fc part of certain immunoglobulins (especially IgG), it is widely used in the purification of antibody drugs. However, during the purification , protein A may leach from the purification column and resulte in contamination of the antibody drugs prepared. Protein A has a variety of specific biological characteristics, so there are strict regulations on the acceptable level of Protein A in antibody drug preparations. Therefore, the detection of residual Protein A in antibody drugs purified from Protein A purification column is a key quality control step in the production process of antibody drug preparations. |
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