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...of the body to metabolize the amino acid phenylalanine. Phenylalanine is normally converted in the human body to tyrosine, another amino acid, by a specific organic catalyst, or enzyme, called phenylalanine hydroxylase. This enzyme is not active in individuals who have phenylketonuria.
Best Answer: The purpose of this test is to determine an organisms ability to remove an amine group from the amino acid phenylalanine using the enzyme phenylalanine deaminase. These bacteria include Proteus, Providencia, and Morganella of the family Enterobacteriacea, and some species of Moraxella.