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Literature summary for 2.1.1.109 extracted from
- Purification and characterization of O-methyltransferase I involved in conversion of demethylsterigmatocystin to sterigmatocystin and of dihydrodemethylsterigmatocystin to dihydrosterigmatocystin during aflatoxin biosynthesis (1998), Appl. Environ. Microbiol., 64, 166-171.
Inhibitors
| Inhibitors | Comment | Organism | Structure |
|---|---|---|---|
| 6-demethylsterigmatocystin | at higher concentrations | Aspergillus parasiticus |  |
| dihydrodemethylsterigmatocystin | at higher concentrations | Aspergillus parasiticus | |
KM Value [mM]
| KM Value [mM] | KM Value Maximum [mM] | Substrate | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.00094 | - |
6-demethylsterigmatocystin | - |
Aspergillus parasiticus | |
| 0.0025 | - |
dihydrodemethylsterigmatocystin | - |
Aspergillus parasiticus | |
Localization
| Localization | Comment | Organism | GeneOntology No. | Textmining |
|---|
Molecular Weight [Da]
| Molecular Weight [Da] | Molecular Weight Maximum [Da] | Comment | Organism |
|---|---|---|---|
| 15000 | - |
gel filtration | Aspergillus parasiticus |
| 43000 | - |
x * 43000, SDS-PAGE | Aspergillus parasiticus |
Organism
| Organism | UniProt | Comment | Textmining |
|---|---|---|---|
| Aspergillus parasiticus | - |
NIAH-26 | - |
| Aspergillus parasiticus NIAH-26 | - |
NIAH-26 | - |
Purification (Commentary)
| Purification (Comment) | Organism |
|---|---|
| phenyl-Sepharose, Sephacryl S-300, Matrex gel Green A | Aspergillus parasiticus |
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 |
|---|---|---|---|
| 0.043 | - |
with dihydrodemethylsterigmatocystin | Aspergillus parasiticus |
| 0.061 | - |
with 6-demethylsterigmatocystin | Aspergillus parasiticus |
Substrates and Products (Substrate)
| Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
|---|---|---|---|---|---|---|
| S-adenosyl-L-methionine + 6-demethylsterigmatocystin | - |
Aspergillus parasiticus | S-adenosyl-L-homocysteine + sterigmatocystin | - |
? | |
| S-adenosyl-L-methionine + 6-demethylsterigmatocystin | - |
Aspergillus parasiticus NIAH-26 | S-adenosyl-L-homocysteine + sterigmatocystin | - |
? | |
| S-adenosyl-L-methionine + dihydrodemethylsterigmatocystin | - |
Aspergillus parasiticus | S-adenosyl-L-homocysteine + dihydrosterigmatocystin | - |
? | |
| S-adenosyl-L-methionine + dihydrodemethylsterigmatocystin | - |
Aspergillus parasiticus NIAH-26 | S-adenosyl-L-homocysteine + dihydrosterigmatocystin | - |
? | |
Subunits
| Subunits | Comment | Organism |
|---|---|---|
| ? | x * 43000, SDS-PAGE | Aspergillus parasiticus |
pH Optimum
| pH Optimum Minimum | pH Optimum Maximum | Comment | Organism |
|---|---|---|---|
| 6.6 | 9 | - |
Aspergillus parasiticus |
Ki Value [mM]
| Ki Value [mM] | Ki Value maximum [mM] | Inhibitor | Comment | Organism | Structure |
|---|---|---|---|---|---|
| 0.108 | - |
6-demethylsterigmatocystin | - |
Aspergillus parasiticus | |
| 0.171 | - |
dihydrodemethylsterigmatocystin | - |
Aspergillus parasiticus | |
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