Tetrahydrobiopterin

From Biocrawler, the free encyclopedia.

Tetrahydrobiopterin or BH₄ is a cofactor in the synthesis of nitric oxide. It is also important in the conversion of phenylalanine to tyrosine by the enzyme phenylalanine-4-hydroxylase. A defect in BH₄ production and/or a defect in the enzyme dihydropteridine reductase (DHPR) causes phenylketonuria type IV.

External links

• coenzyme tetrahydrobiopterin (BH4) (http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=261640)

Wikipedia (http://en.wikipedia.org/wiki/Main_Page) Tetrahydrobiopterin (http://en.wikipedia.org/wiki/Tetrahydrobiopterin) version history (http://en.wikipedia.org/w/index.php?title=Tetrahydrobiopterin&action=history) GNU Free Documentation Lizenz (http://en.wikipedia.org/wiki/Wikipedia:Text_of_the_GNU_Free_Documentation_License) CC-by-sa (http://creativecommons.org/licenses/by-sa/2.5/)

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