Proteins [Chemical/Ingredient] Caseins [Chemical/Ingredient] 2126 Caseins N0000006768 Caseins A mixture of related phosphoproteins occurring in milk and cheese. The group is characterized as one of the most nutritive milk proteins, containing all of the common amino acids and rich in the essential ones. Casein D002364 M0003590 C0007332 Dietary Proteins [Chemical/Ingredient]