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1.14.16.2: tyrosine 3-monooxygenase

This is an abbreviated version!
For detailed information about tyrosine 3-monooxygenase, go to the full flat file.

Word Map on EC 1.14.16.2

Reaction

L-tyrosine
+
a 5,6,7,8-tetrahydropteridine
+
O2
=
L-Dopa
+
a 4a-hydroxy-5,6,7,8-tetrahydropteridine

Synonyms

CAT-2, DTH1, DTH2, hTH2, L-tyrosine hydroxylase, monophenol monooxygenase, oxygenase, tyrosine 3-mono-, TH, TH1, TH2, TyrH, tyrosinase, tyrosine 3-hydroxylase, tyrosine 3-monooxygenase, tyrosine hydroxylase, tyrosine hydroxylase type 1, tyrosine-3-mono-oxygenase, tyrosine-3-monooxygenase

ECTree

     1 Oxidoreductases
         1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
             1.14.16 With reduced pteridine as one donor, and incorporation of one atom of oxygen into the other donor
                1.14.16.2 tyrosine 3-monooxygenase

Systematic Name

Systematic Name on EC 1.14.16.2 - tyrosine 3-monooxygenase

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SYSTEMATIC NAME
IUBMB Comments
L-tyrosine,tetrahydrobiopterin:oxygen oxidoreductase (3-hydroxylating)
The active centre contains mononuclear iron(II). The enzyme is activated by phosphorylation, catalysed by EC 2.7.11.27, [acetyl-CoA carboxylase] 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.