| abstract |
Modified α-lactalbumin, for example of bovine or human origin, comprising fewer phenylalanine residues than wild type α-lactalbumin may be used as a dietary component for sufferers of hyperphenylalaninemia. Preferably all of the phenylalanine residues are replaced. The modified α-lactalbumin may be expressed in the mammary gland of non-human host animals so as to accumulate in, and if desired be separated from, their milk. |