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Co-Induction of Tetrahydrobiopterin (BH4) Levels and Tyrosine Hydroxylase Activity in Cultured PC12 Cells

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Book cover Chemistry and Biology of Pteridines and Folates

Abstract

BH4 is the cofactor for Phenylalanine hydroxylase, as well as tyrosine and tryptophan hydroxylases, which are the rate-limiting enzymes in catecholamine (CA) and Serotonin synthesis, respectively. CTP cyclohydrolase (CTP-CH) and sepiapterin reductase (SR) catalyze the initial and final steps in BH4 biosynthesis, respectively. Because no intermediates are detected, CTP-CH is thought to be the rate-limiting enzyme in nonprimate BH4 biosynthesis. In humans, the existence of neopterin in fluids suggests that other enzymes following CTP-CH may also play a regulatory role in BH4 biosynthesis.

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© 1993 Springer Science+Business Media New York

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Anastasiadis, P.Z., States, J.C., Kuhn, D.M., Levine, R.A. (1993). Co-Induction of Tetrahydrobiopterin (BH4) Levels and Tyrosine Hydroxylase Activity in Cultured PC12 Cells. In: Ayling, J.E., Nair, M.G., Baugh, C.M. (eds) Chemistry and Biology of Pteridines and Folates. Advances in Experimental Medicine and Biology, vol 338. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-2960-6_45

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  • DOI: https://doi.org/10.1007/978-1-4615-2960-6_45

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4613-6287-6

  • Online ISBN: 978-1-4615-2960-6

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