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Literature summary for 2.1.1.159 extracted from
- A new caffeine biosynthetic pathway in tea leaves: utilisation of adenosine released from the S-adenosyl-L-methionine cycle (2001), FEBS Lett., 499, 50-54.
Localization
| Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|---|---|---|---|
| chloroplast | - |
Camellia sinensis | 9507 | - |
Natural Substrates/ Products (Substrates)
| Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| S-adenosyl-L-methionine + 7-methylxanthine | Camellia sinensis | the enzyme is part of a caffeine biosynthetic pathway which includes a recycling of adenosine released from S-adenosyl-L-methionine in form of xanthosine monophosphate, overview | S-adenosyl-L-homocysteine + 3,7-dimethylxanthine | i.e. theobromine | ? |  |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Camellia sinensis | - |
- |
- |
Source Tissue
| Source Tissue | Comment | Organism | Textmining |
|---|---|---|---|
| leaf | activity profile of the enzyme in young, adult, and aged leaves, high activity in young leaves | Camellia sinensis | - |
Specific Activity [micromol/min/mg]
| Specific Activity Minimum [µmol/min/mg] | Specific Activity Maximum [µmol/min/mg] | Comment | Organism |
|---|---|---|---|
| additional information | - |
in vivo activities after feeding of radiolabeled L-methionine, activity profile of the enzyme in young, adult, and aged leaves, overview | Camellia sinensis |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| S-adenosyl-L-methionine + 7-methylxanthine | - |
Camellia sinensis | S-adenosyl-L-homocysteine + 3,7-dimethylxanthine | i.e. theobromine | ? | |
| S-adenosyl-L-methionine + 7-methylxanthine | the enzyme is part of a caffeine biosynthetic pathway which includes a recycling of adenosine released from S-adenosyl-L-methionine in form of xanthosine monophosphate, overview | Camellia sinensis | S-adenosyl-L-homocysteine + 3,7-dimethylxanthine | i.e. theobromine | ? | |
Synonyms
| Synonyms | Comment | Organism |
|---|---|---|
| 7-methylxanthine 3-N-methyltransferase | - |
Camellia sinensis |
Temperature Optimum [°C]
| Temperature Optimum [°C] | Temperature Optimum Maximum [°C] | Comment | Organism |
|---|---|---|---|
| 27 | - |
assay at | Camellia sinensis |
pH Optimum
| pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|
| 8.3 | - |
assay at | Camellia sinensis |
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Release 2023.1 (January 2023)
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