AP BIOLOGY

Detailed explanation-1: -Casein protein is a protein found in milk that gives milk its white color. Cow’s milk consists of around 80% casein protein. In addition to milk, casein protein is found in yogurt, cheese, and infant formulas, as well as in a variety of dietary supplements. Do not confuse casein protein with casein peptides.

Detailed explanation-2: -Caseins are mammalian milk proteins with a loose tertiary, highly hydrated structure. They possess clusters of phosphoserine and phosphothreonine residues that bind amorphous calcium phosphate, which allows milk to contain higher levels of soluble calcium than is possible in ordinary solutions.

Detailed explanation-3: -Whey protein comprises 20% of milk protein and its ingestion is characterized by a rapid aminoacidemia in the blood and muscle [19]. Casein in its micellar form make up the remaining 80% of milk protein and is characterized by a slow and sustained release of AAs into the blood and muscle [19].

Detailed explanation-4: -In cow’s milk, approximately 82% of milk protein is casein and the remaining 18% is serum, or whey protein. The casein family of protein consists of several types of caseins (-s1, -s2, ß, and 6) and each has its own amino acid composition, genetic variations, and functional properties.