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. 2013 Apr 18;3(2):294–311. doi: 10.3390/metabo3020294

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© 2013 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Pathways of aromatic amino acids synthesis. Reactions denoted as numbers are catalyzed by following enzymes: (1) 2-dehydro-3-deoxyphosphoheptonate aldolase, (2) dehydroquinate synthase, (3) 3-dehydroquinate dehydratase, (4) shikimate-NADP oxidoreductase, (5) shikimate kinase, (6) 5-enolpyruvylshikimate-3-phosphate synthase, (7) chorismate synthase, (8) chorismate mutase, (9) prephenate dehydrogenase, (10) phenylalanine:2-oxoglutarate transaminases, (11) phenylalanine 4-monooxygenase, (12) anthranilate synthase, (13) anthranilate phosphoribosyltransferase, (14) phosphoribosylanthranilate isomerase, (15) indole-3-glycerolphosphate synthase, (16) tryptophan synthase.