Application | Comment | Organism |
---|---|---|
biotechnology | CNMT should be quite useful for biotransformation of the intermediates of alkaloid biosynthesis to N-methyltransferred products | Coptis japonica |
Cloned (Comment) | Organism |
---|---|
expression in Escherichia coli | Coptis japonica |
Inhibitors | Comment | Organism | Structure |
---|---|---|---|
Co2+ | 5 mM, 37% inhibition | Coptis japonica | |
Cu2+ | 5 mM, 52% inhibition | Coptis japonica | |
Mn2+ | 5 mM, 52% inhibition | Coptis japonica |
KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
---|---|---|---|---|---|
0.16 | - |
(R,S)-norreticuline | recombinant CNMT | Coptis japonica | |
0.39 | - |
S-adenosyl-L-methionine | recombinant CNMT | Coptis japonica |
Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
S-adenosyl-L-methionine + (S)-coclaurine | Coptis japonica | isoquinoline alkaloid biosynthesis | S-adenosyl-L-homocysteine + (S)-N-methylcoclaurine | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Coptis japonica | - |
- |
- |
Purification (Comment) | Organism |
---|---|
recombinant enzyme | Coptis japonica |
Source Tissue | Comment | Organism | Textmining |
---|---|---|---|
cell culture | - |
Coptis japonica | - |
Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
---|---|---|---|
1.08 | - |
- |
Coptis japonica |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
additional information | no activity with: (R,S)-scoulerine, 1,2,3,4-tetrahydroisoquinoline and 1,2,3,4-tetrahydro-3-isoquinoline carboxylic acid (+)-emetine | Coptis japonica | ? | - |
? | |
S-adenosyl-L-methionine + (R)-coclaurine | 240% of the activity with (R,S)-norreticuline | Coptis japonica | S-adenosyl-L-homocysteine + (R)-N-methylcoclaurine | - |
? | |
S-adenosyl-L-methionine + (R,S)-6-O-methylnorlaudanosoline | 69% of the activity with (R,S)-norreticuline | Coptis japonica | S-adenosyl-L-homocysteine + (R,S)-N-methyl-6-O-methylnorlaudanosoline | - |
? | |
S-adenosyl-L-methionine + (R,S)-norlaudanosoline | 49% of the activity with (R,S)-norreticuline | Coptis japonica | S-adenosyl-L-homocysteine + (R,S)-N-methylnorlaudanosoline | - |
? | |
S-adenosyl-L-methionine + (S)-coclaurine | isoquinoline alkaloid biosynthesis | Coptis japonica | S-adenosyl-L-homocysteine + (S)-N-methylcoclaurine | - |
? | |
S-adenosyl-L-methionine + (S)-coclaurine | sequential mechanism, 153% of the activity with (R,S)-norreticuline | Coptis japonica | S-adenosyl-L-homocysteine + (S)-N-methylcoclaurine | - |
? | |
S-adenosyl-L-methionine + 1-methyl-6,7-dihydroxy-1,2,3,4-tetrahydroisoquinoline | 15% of the activity with (R,S)-norreticuline | Coptis japonica | S-adenosyl-L-homocysteine + 6,7-dihydroxy-1,N-dimethyl-1,2,3,4-tetrahydroisoquinoline | - |
? | |
S-adenosyl-L-methionine + 6,7-dimethoxy-N-methyl-1,2,3,4-tetrahydroisoquinoline | 180% of the activity with (R,S)-norreticuline | Coptis japonica | S-adenosyl-L-homocysteine + 6,7-dimethoxy-1,2,3,4-tetrahydroisoquinoline | - |
? |
Synonyms | Comment | Organism |
---|---|---|
CNMT | - |
Coptis japonica |
coclaurine N-methyltransferase | - |
Coptis japonica |
S-adenosyl-L-methionine:coclaurine N-methyltransferase | - |
Coptis japonica |
pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
---|---|---|---|
7 | - |
- |
Coptis japonica |
pH Minimum | pH Maximum | Comment | Organism |
---|---|---|---|
6.5 | 8 | about 50% of maximal activity at pH 6.5 and at pH 8.0 | Coptis japonica |