产品内容
本酶催化的反应为2 S-Adenosyl-L-Methionine + Squalene = 2 S-Adenosyl-L-Homocysteine + 3,22-Dimethyl-1,2,23,24-Tetradehydro-2,3,22,23-Tetrahydrosqualene (Overall Reaction);;(1a) S-Adenosyl-L-Methionine + Squalene = S-Adenosyl-L-Homocysteine + 3-Methyl-1,2-Didehydro-2,3-Dihydrosqualene;;(1b) S-Adenosyl-L-Methionine + 3-Methyl-1,2-Didehydro-2,3-Dihydrosqualene = S-Adenosyl-L-Homocysteine + 3,22-Dimethyl-1,2,23,24-Tetradehydro-2,3,22,23-Tetrahydrosqualene,系统名称为S-Adenosyl-L-Methionine:squalene C-Methyltransferase,从绿藻葡萄藻 Botryococcus braunii BOT22 中分离到特异性不同的两种同工型。TMT-1 生成较多二甲基化形式,而 TMT2 生成较多单甲基化形式。