Entry |
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Name |
botryococcene C-methyltransferase;
TMT-3
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Class |
Transferases;
Transferring one-carbon groups;
Methyltransferases
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Sysname |
S-adenosyl-L-methionine:botryococcene C-methyltransferase
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Reaction(IUBMB) |
2 S-adenosyl-L-methionine + C30 botryococcene = 2 S-adenosyl-L-homocysteine + 3,20-dimethyl-1,2,21,22-tetradehydro-2,3,20,21-tetrahydrobotryococcene (overall reaction) [RN: R10199];
(1a) S-adenosyl-L-methionine + C30 botryococcene = S-adenosyl-L-homocysteine + 3-methyl-1,2-didehydro-2,3-dihydrobotryococcene [RN: R10195];
(1b) S-adenosyl-L-methionine + 3-methyl-1,2-didehydro-2,3-dihydrobotryococcene = S-adenosyl-L-homocysteine + 3,20-dimethyl-1,2,21,22-tetradehydro-2,3,20,21-tetrahydrobotryococcene [RN: R10196];
(2a) S-adenosyl-L-methionine + C30 botryococcene = S-adenosyl-L-homocysteine + 20-methyl-21,22-didehydro-20,21-dihydrobotryococcene [RN: R10197];
(2b) S-adenosyl-L-methionine + 20-methyl-21,22-didehydro-20,21-dihydrobotryococcene = S-adenosyl-L-homocysteine + 3,20-dimethyl-1,2,21,22-tetradehydro-2,3,20,21-tetrahydrobotryococcene [RN: R10198]
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Reaction(KEGG) |
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Substrate |
S-adenosyl-L-methionine [CPD: C00019];
C30 botryococcene [CPD: C20432];
3-methyl-1,2-didehydro-2,3-dihydrobotryococcene [CPD: C20433];
20-methyl-21,22-didehydro-20,21-dihydrobotryococcene [CPD: C20434]
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Product |
S-adenosyl-L-homocysteine [CPD: C00021];
3,20-dimethyl-1,2,21,22-tetradehydro-2,3,20,21-tetrahydrobotryococcene [CPD: C20435];
3-methyl-1,2-didehydro-2,3-dihydrobotryococcene [CPD: C20433];
20-methyl-21,22-didehydro-20,21-dihydrobotryococcene [CPD: C20434]
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Comment |
Isolated from the green alga Botryococcus braunii BOT22. Shows a very weak activity with squalene.
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History |
EC 2.1.1.263 created 2012
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Orthology |
K21542 | botryococcene C-methyltransferase |
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Reference |
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Authors |
Niehaus TD, Kinison S, Okada S, Yeo YS, Bell SA, Cui P, Devarenne TP, Chappell J |
Title |
Functional identification of triterpene methyltransferases from Botryococcus braunii race B. |
Journal |
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Sequence |
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Other DBs |
ExPASy - ENZYME nomenclature database: | 2.1.1.263 |
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