Process for enzymatic ultrafiltration of deamidated protein

摘要

This invention relates to methods for the large-scale enzymatic deamidation of foot proteins. Deamidating enzymes such as peptidoglutaminase are immobilized using a spiral membrane having a molecular weight cut-off, from about 3 to about 50 kd. The methods minimize loss of the enzymatic activity for subsequent reuse of the enzyme as well as increase deamidation product yield.