THE proof of any hypothesis of protein structure must in the last resort be based upon the isolation of partial cleavage products of definite composition, ranging in complexity from the amino-acid to ...

As a result of previous work 1–3, it has been concluded that there exist in α-casein, arginine and lysine residues carrying free α-amino groups and occupying N-terminal positions in open polypeptide ...

Natural protein, whey, and casein protein supplements from whole foods usually work best for weight loss. This might include eggs, cheese, lean meat, and fish. Protein powder may also be beneficial ...