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Information on EC 1.14.16.4 - tryptophan 5-monooxygenase

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IUBMB Comments
The active centre contains mononuclear iron(II). The enzyme is activated by phosphorylation, catalysed by a Ca2+-activated protein kinase. The 4a-hydroxytetrahydropteridine formed can dehydrate to 6,7-dihydropteridine, both spontaneously and by the action of EC 4.2.1.96, 4a-hydroxytetrahydrobiopterin dehydratase. The 6,7-dihydropteridine must be enzymically reduced back to tetrahydropteridine, by EC 1.5.1.34, 6,7-dihydropteridine reductase, before it slowly rearranges into the more stable but inactive compound 7,8-dihydropteridine.
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Word Map
The enzyme appears in viruses and cellular organisms
Synonyms
tryptophan hydroxylase, tryptophan hydroxylase 2, tryptophan hydroxylase 1, tph-1, tryptophan hydroxylase-2, tryptophan hydroxylase-1, tph-2, tryptophan-5-hydroxylase, tryptophan 5-monooxygenase, htph2, more
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
L-tryptophan + a 5,6,7,8-tetrahydropteridine + O2 = 5-hydroxy-L-tryptophan + a 4a-hydroxy-5,6,7,8-tetrahydropteridine
show the reaction diagram
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