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aromatic amino acid lyase
This family includes proteins with phenylalanine ammonia-lyase, EC:4.3.1.24, histidine ammonia-lyase, EC:4.3.1.3, and tyrosine aminomutase, EC:5.4.3.6, activities [1-3]. [1]. 7925471. Structural and catalytic properties of the four phenylalanine. ammonia-lyase isoenzymes from parsley (Petroselinum crispum. Nym.).. Appert C, Logemann E, Hahlbrock K, Schmid J, Amrhein N;. Eur J Biochem. 1994;225:491-499.. [2]. 10220322. Crystal structure of histidine ammonia-lyase revealing a novel. polypeptide modification as the catalytic electrophile.. Schwede TF, Retey J, Schulz GE;. Biochemistry. 1999;38:5355-5361.. [3]. 16793524. Molecular and biochemical studies of chondramide. formation-highly cytotoxic natural products from Chondromyces. crocatus Cm c5.. Rachid S, Krug D, Kunze B, Kochems I, Scharfe M, Zabriskie TM,. Blocker H, Muller R;. Chem Biol. 2006;13:667-681. (from Pfam)
histidine ammonia-lyase
This enzyme deaminates histidine to urocanic acid, the first step in histidine degradation. It is closely related to phenylalanine ammonia-lyase.
histidine ammonia-lyase catalyzes the nonoxidative elimination of the alpha-amino group of L-histidine to form urocanate in the first step of histidine degradation to glutamate
Catalyzes the degradation of histidine to urocanate and ammmonia
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