| EC |
2.1.1.283 |
| Accepted name: |
emodin O-methyltransferase |
| Reaction: |
S-adenosyl-L-methionine + emodin = S-adenosyl-L-homocysteine + questin |
| Glossary: |
emodin = 1,3,8-trihydroxy-6-methyl-9,10-anthraquinone
questin = 1,6-dihydroxy-8-methoxy-3-methyl-9,10-anthraquinone |
| Other name(s): |
EOMT |
| Systematic name: |
S-adenosyl-L-methionine:emodin 8-O-methyltransferase |
| Comments: |
The enzyme is involved in biosynthesis of the seco-anthraquinone (+)-geodin. |
| Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc, PDB |
| References: |
| 1. |
Chen, Z.G., Fujii, I., Ebizuka, Y. and Sankawa, U. Emodin O-methyltransferase from Aspergillus terreus. Arch. Microbiol. 158 (1992) 29–34. [PMID: 1444712] |
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| [EC 2.1.1.283 created 2013] |
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| EC |
2.4.1.181 |
| Accepted name: |
hydroxyanthraquinone glucosyltransferase |
| Reaction: |
UDP-glucose + an hydroxyanthraquinone = UDP + a glucosyloxyanthraquinone |
| Other name(s): |
uridine diphosphoglucose-anthraquinone glucosyltransferase; anthraquinone-specific glucosyltransferase |
| Systematic name: |
UDP-glucose:hydroxyanthraquinone O-glucosyltransferase |
| Comments: |
A range of anthraquinones and some flavones can act as acceptors; best substrates are emodin, anthrapurpurin, quinizarin, 2,6-dihydroanthraquinone and 1,8-dihydroxyanthraquinone. |
| Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 112198-78-4 |
| References: |
| 1. |
Khouri, H.E. and Ibrahim, R.K. Purification and some properties of five anthraquinone-specific glucosyltransferases from Cinchona succiruba cell suspension culture. Phytochemistry 26 (1987) 2531–2535. |
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| [EC 2.4.1.181 created 1990] |
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