ID 2.1.1.263 DE botryococcene C-methyltransferase. CA C30 botryococcene + 2 S-adenosyl-L-methionine = 3,20-dimethyl-1,2,21,22- CA tetradehydro-2,3,20,21-tetrahydrobotryococcene + 2 H(+) + 2 S-adenosyl-L- CA homocysteine. CC -!- Isolated from the green alga Botryococcus braunii BOT22. CC -!- Shows a very weak activity with squalene. DR H2E7T7, BOMT_BOTBR ; //