Squalene methyltransferase

Squalene methyltransferase is an enzyme with systematic name S-adenosyl-L-methionine:squalene C-methyltransferase. This enzyme catalyses the following chemical reaction2 S-adenosyl-L-methionine + squalene 2 S-adenosyl-L-homocysteine + 3,22-dimethyl-1,2,23,24-tetradehydro-2,3,22,23-tetrahydrosqualene (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

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