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Updated: Aug 10, 2026

IgY Technology: Extraction of Chicken Antibodies from Egg Yolk by Polyethylene Glycol (PEG) Precipitation
Published on: May 1, 2011
Protein proteinase inhibitors from avian egg whites
1Department of Biochemistry, Faculty of Medicine, Aligarh Muslim University, India.
Abstract:
Avian egg whites are a rich source of protein inhibitors of proteinases belonging to all four mechanistic classes. Ovomucoid and ovoinhibitor are multidomain Kazal-type inhibitors with each domain containing an actual or putative reactive site for a serine proteinase. Cystatin is a cysteine proteinase inhibitor, while ovostatin inhibits proteinases of all four mechanistic classes. In this review we have summarized the general features, isolation, inhibitory mechanism and evolutionary aspects of these inhibitors.
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