苯丙氨酸是一种芳香族非极性氨基酸。苯丙氨酸、酪氨酸和色氨酸是三种能吸收 250 nm 以上紫外线的氨基酸。苯丙氨酸降解形成乙酰乙酸和延胡索酸。 同位素标记的氨基酸是生产同位素标记的蛋白质所必需的。 应用 L-苯丙氨酸-13C9,15N 已作为念珠藻种液体生长培养的补充，用于研究noc操纵子（NoA 生物合成操纵子）参与 NoA (nocuolin a) 合成。 Phenylalanine is an aromatic nonpolar amino acid. Phenylalanine, tyrosine and tryptophan are three amino acids which can absorb ultraviolet radiation above 250nm. Degradation of phenylalanine results in the formation of acetoacetate and fumarate. Isotope labeled amino acids are required for the production of isotopically labeled proteins.L-Phenylalanine-13C9,15N has been used as a supplement in liquid growth culture ofNostocspecies to study the involvement ofnocoperon (NoA biosynthesis operon) in NoA (nocuolin A) synthesis.