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Urocanate hydratase

Porphobilinogen synthase Urocanate hydratase 3-Hydroxypalmitoyl-[ACP] dehydratase Uroporphyrinogen 111 synthase... [Pg.428]

FIGURE 18-26 Catabolic pathways for arginine, histidine, glutamate, glutamine, and proline. These amino acids are converted to a-ketoglutarate. The numbered steps in the histidine pathway are catalyzed by histidine ammonia lyase, urocanate hydratase, imida-zolonepropionase, and glutamate formimino transferase. [Pg.681]

Histidine ammonia-lyase 2 urocanate hydratase 3 imidazolone propionase 4 glutamate form-iminotransferase (the enzyme occurs in vertebrates and forms 5-formimino tetrahydrofolic acid)... [Pg.383]

Urocanic aciduria Urocanic acid Urocanate hydratase (EC 4.2.1.49) 16.5... [Pg.219]

Catabolism The biological degradation of His proceeds through urocanic acid [histidine ammonia lyase (EC 4.3.1.3)] and 4-imidazolone-5-propanoic acid [urocanic acid hydratase (EC 4.2.1.49)]. The imidazo-ione ring is cleaved by imidazolone propionase (EC 3.S.2.7) and furnishes N-formiminoglutaminic acid. Finally, Glu is formed by glutamate formiminotrans-ferase (EC 2.1.2.5) with the cofactor tetrahydrofolic acid. [Pg.293]

See other pages where Urocanate hydratase is mentioned: [Pg.5369]    [Pg.69]    [Pg.5369]    [Pg.69]    [Pg.17]   
See also in sourсe #XX -- [ Pg.428 ]

See also in sourсe #XX -- [ Pg.383 ]



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