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EC 2.1.1.95 Details
EC number
2.1.1.95
Accepted name
tocopherol C-methyltransferase
Reaction
(1) S-adenosyl-L-methionine + γ-tocopherol = S-adenosyl-L-homocysteine + α-tocopherol ;;(2) S-adenosyl-L-methionine + δ-tocopherol = S-adenosyl-L-homocysteine + β-tocopherol ;;(3) S-adenosyl-L-methionine + γ-tocotrienol = S-adenosyl-L-homocysteine + α-tocotrienol ;;(4) S-adenosyl-L-methionine + δ-tocotrienol = S-adenosyl-L-homocysteine + β-tocotrienol
Other name(s)
γ-tocopherol methyltransferase, VTE4 (gene name), S-adenosyl-L-methionine:γ-tocopherol 5-O-methyltransferase (incorrect), tocopherol O-methyltransferase (incorrect)
Systematic name
S-adenosyl-L-methionine:γ-tocopherol 5-C-methyltransferase
CAS registry number
84788-82-9
Comment
The enzymes from plants and photosynthetic bacteria have similar efficiency with the γ and δ isomers of tocopherols and tocotrienols.
History
created 1989, modified 2013, modified 2019
EC Tree
2.1.1.23 created 1972, modified 1976, modified 1983, deleted 1999
2.1.1.24 created 1972, modified 1983, modified 1989, deleted 1992
2.1.1.30 created 1972, deleted 1981
2.1.1.58 created 1981, deleted 1984
2.1.1.73 created 1984, deleted 2003
2.1.1.81 created 1989, deleted 1990
2.1.1.134 created 1999, deleted 2002
2.1.1.135 created 1999, deleted 2003
2.1.1.138 created 2000, deleted 2003