Biological Function
Phenylalanine ammonia lyase can perform different functions in different species. It is found mainly in some plants, fungi, and yeast. In fungal and yeast cells, PAL plays an important catabolic role, generating carbon and nitrogen. In plants it is a key biosynthetic enzyme that catalyzes the first step in the synthesis of a variety of polyphenyl compounds and is mainly involved in defense mechanisms. PAL is involved in 5 metabolic pathways: tyrosine metabolism, phenylalanine metabolism, nitrogen metabolism, phenylpropanoid biosynthesis, and alkaloid biosynthesis ii.
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