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Literature summary for 1.14.16.2 extracted from

  • Yamamoto, K.; Kobayashi, N.; Yoshitama, K.; Teramoto, S.; Komamine, A.
    Isolation and purification of tyrosine hydroxylase from callus cultures of Portulaca grandiflora (2001), Plant Cell Physiol., 42, 969-975.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
additional information inhibited by metal chelating agents Portulaca grandiflora

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.15
-
6-methyl-5,6,7,8-tetrahydrobiopterin
-
Portulaca grandiflora
0.5
-
tyrosine
-
Portulaca grandiflora

Metals/Ions

Metals/Ions Comment Organism Structure
Iron Fe2+ activates Portulaca grandiflora
Mn2+ activates Portulaca grandiflora

Organism

Organism UniProt Comment Textmining
Portulaca grandiflora
-
-
-

Purification (Commentary)

Purification (Comment) Organism
-
Portulaca grandiflora

Source Tissue

Source Tissue Comment Organism Textmining
callus cell culture Portulaca grandiflora
-

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
L-tyrosine + 2-amino-4-hydroxy-6,7-dimethyltetrahydropterin + O2 synthetic pterin as electron donor Portulaca grandiflora ?
-
?
L-tyrosine + 2-amino-4-hydroxy-6-methyltetrahydropterin + O2 synthetic pterin as electron donor Portulaca grandiflora ?
-
?
L-tyrosine + 6-methyl-5,6,7,8-tetrahydrobiopterin + O2
-
Portulaca grandiflora 3,4-dihydroxy-L-phenylalanine + 6-methyl-4a-hydroxytetrahydrobiopterin
-
r
L-tyrosine + tetrahydrobiopterin + O2
-
Portulaca grandiflora 3,4-dihydroxy-L-phenylalanine + dihydrobiopterin + H2O 3,4-dihydroxy-L-phenylalanine is identical with dopa ?