Caseins are a family of phosphoproteins (αS1, αS2, β, κ) that account for nearly 80% of bovine milk proteins and that form soluble aggregates known as casein micelles in which κ-casein molecules stabilize the structure. The specific cleavage of κ-casein by chymosin is the first step in the milk clotting process. Gastro-intestinal proteases cleave κ-casein, converting it into an insoluble peptide (para κ-casein) and a soluble hydrophilic glycopeptide called caseinomacropeptide . Caseinomacropeptide is responsible for increased efficiency of digestion, prevention of neonate hypersensitivity to ingested proteins, and inhibition of gastric pathogens.
Family-defining Pfam domains (at least one of these domains is present in each family member):
|Pfam domain||Pfam clan|
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