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Catecholamine-synthesizing enzymes in the brain, with special reference to tyrosine hydroxylase and the biopterin cofactor Toshiharu NAGATSU 1,2 1Department of Biochemistry, Nagoya University School of Medicine 2Laboratory of Cell Physiology Department of Life Chemistry, Graduate School at Nagatsuta, Tokyo Institute of Technology pp.977-983
Published Date 1984/12/10
DOI https://doi.org/10.11477/mf.1431905656
  • Abstract
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 Tyrosine hydroxylase (TH), which catalyzes hydroxylation of tyrosine to dihydroxyphenylalanine (DOPA) and is the first and ratelimiting step in the biosynthesis of catecholamines (dopamine, noradrenaline, and adrenaline) in the catecholaminergic neurons of the brain, requires (6R)-L-erythro-tetrahydrobiopterin (BH4) as cofactor, dihydropteridine reductase, NADH, and NADH generating system. BH4 is synthesized from GTP in the catecholaminergic neurons, and may be a rate-limiting factor for TH activity and therefore for catecholamine biosynthesis.


Copyright © 1984, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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