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Literature summary for 2.1.1.117 extracted from

  • Muemmler, S.; Rueffer, M.; Nagakura, N.; Zenk, M.H.
    S-Adenosyl-L-methionine:(S)-scoulerine 9-O-methyltransferase, a highly stereo- and regio-specific enzyme in tetrahydroprotoberberine biosynthesis (1985), Plant Cell Rep., 4, 36-39.
    View publication on PubMed

Inhibitors

Inhibitors Comment Organism Structure
Cu2+ 5 mM, 97% inhibition Berberis wilsoniae
S-adenosylhomocysteine
-
Berberis wilsoniae

KM Value [mM]

KM Value [mM] KM Value Maximum [mM] Substrate Comment Organism Structure
0.042
-
S-adenosyl-L-methionine
-
Berberis wilsoniae
1.6
-
(S)-scoulerine
-
Berberis wilsoniae

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
63000
-
-
Berberis wilsoniae

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
S-Adenosyl-L-methionine + (S)-scoulerine Berberis wilsoniae central role in orotoberberine biosynthesis ?
-
?

Organism

Organism UniProt Comment Textmining
Berberis wilsoniae
-
var. subcauliata
-

Purification (Commentary)

Purification (Comment) Organism
-
Berberis wilsoniae

Source Tissue

Source Tissue Comment Organism Textmining
cell culture
-
Berberis wilsoniae
-
cell suspension culture
-
Berberis wilsoniae
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
additional information
-
-
Berberis wilsoniae

Storage Stability

Storage Stability Organism
-20°C, 20% glycerol, 50% loss of activity after 7 days Berberis wilsoniae

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
S-Adenosyl-L-methionine + (R,S)-2,3,9,10-tetrahydroxytetrahydroprotoberberine methylated at 50% of the rate of (S)-scoulerine Berberis wilsoniae ?
-
?
S-Adenosyl-L-methionine + (S)-3,9-dihydroxy-2,10-dimethoxytetrahydroprotoberberine methylated at 4% of the rate of (S)-scoulerine Berberis wilsoniae ?
-
?
S-Adenosyl-L-methionine + (S)-scoulerine
-
Berberis wilsoniae S-Adenosyl-L-homocysteine + (S)-tetrahydrocolumbamine
-
?
S-Adenosyl-L-methionine + (S)-scoulerine central role in orotoberberine biosynthesis Berberis wilsoniae ?
-
?

Temperature Optimum [°C]

Temperature Optimum [°C] Temperature Optimum Maximum [°C] Comment Organism
37
-
-
Berberis wilsoniae

pH Optimum

pH Optimum Minimum pH Optimum Maximum Comment Organism
8.9
-
-
Berberis wilsoniae