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Literature summary for 1.14.16.1 extracted from

  • Kowlessur, D.; Citron, B.A.; Kaufman, S.
    Recombinant human phenylalanine hydroxylase: novel regulatory and structural properties (1996), Arch. Biochem. Biophys., 333, 85-95.
    View publication on PubMed

Activating Compound

Activating Compound Comment Organism Structure
cAMP-dependent protein kinase
-
Rattus norvegicus
cAMP-dependent protein kinase 1.5fold stimulation of recombinant enzyme Homo sapiens
lysolecithin
-
Rattus norvegicus
lysolecithin 2fold activation of recombinant enzyme, cofactor tetrahydrobiopterin Homo sapiens
phenylalanine
-
Rattus norvegicus
phenylalanine recombinant enzyme, 2fold increase in activity, cofactor tetrahydrobiopterin Homo sapiens

Cloned(Commentary)

Cloned (Comment) Organism
-
Homo sapiens

Inhibitors

Inhibitors Comment Organism Structure
(7R)-5,6,7,8-tetrahydrobiopterin
-
Homo sapiens
(7R)-5,6,7,8-tetrahydropterin 0.001 mM, 50% inhibition at 0.5 mM phenylalanine, 0.004 mM, 50% inhibition at 0.1 mM phenylalanine, recombinant enzyme Homo sapiens

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.003
-
(6R)-5,6,7,8-tetrahydrobiopterin recombinant enzyme Homo sapiens
0.025
-
(6R)-5,6,7,8-tetrahydrobiopterin recombinant enzyme, phenylalanine-activated Homo sapiens
0.043
-
phenylalanine recombinant enzyme, cofactor (6R)-methyltetrahydropterin Homo sapiens
0.045
-
6-methyltetrahydropterin recombinant enzyme Homo sapiens
0.049
-
phenylalanine phenylalanine-activated recombinant enzyme, cofactor tetrahydrobiopterin Homo sapiens
0.05
-
phenylalanine recombinant enzyme, cofactor tetrahydrobiopterin Homo sapiens
0.055
-
phenylalanine recombinant enzyme, cofactor (7R)-5,6,7,8-tetrahydrobiopterin Homo sapiens
0.2
-
(7R)-5,6,7,8-tetrahydrobiopterin recombinant enzyme Homo sapiens

Organism

Organism UniProt Comment Textmining
Homo sapiens
-
-
-
Rattus norvegicus
-
-
-

Posttranslational Modification

Posttranslational Modification Comment Organism
side-chain modification incorporation of 0.6 mol phosphate per enzyme subunit, recombinant enzyme Homo sapiens

Purification (Commentary)

Purification (Comment) Organism
ammonium sulfate, Phenyl-Sepharose, DEAE-Sepharose, recombinant enzyme Homo sapiens

Source Tissue

Source Tissue Comment Organism Textmining

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2.6
-
recombinant enzyme Homo sapiens

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
L-phenylalanine + (7R)-5,6,7,8-tetrahydrobiopterin + O2
-
Homo sapiens L-tyrosine + 4a-hydroxytetrahydrobiopterin
-
r

Ki Value [mM]

Ki Value [mM] Ki Value maximum [mM] Inhibitor Comment Organism Structure
0.0015
-
(7R)-5,6,7,8-tetrahydrobiopterin
-
Homo sapiens