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EC Explorer

EC 2.5.1.83 Details
EC number
2.5.1.83
Accepted name
hexaprenyl diphosphate synthase [(2E,6E)-farnesyl-diphosphate specific]
Reaction
(2E,6E)-farnesyl diphosphate + 3 (3-methylbut-3-en-1-yl diphosphate) = 3 diphosphate + all-trans-hexaprenyl diphosphate
Other name(s)
HexPS (ambiguous), hexaprenyl pyrophosphate synthetase (ambiguous), hexaprenyl diphosphate synthase (ambiguous), (2E,6E)-farnesyl-diphosphate:isopentenyl-diphosphate farnesyltranstransferase (adding 3 isopentenyl units)
Systematic name
(2E,6E)-farnesyl-diphosphate:3-methylbut-3-en-1-yl-diphosphate farnesyltranstransferase (adding 3 units of 3-methylbut-3-en-1-yl)
Comment
The enzyme prefers farnesyl diphosphate to geranylgeranyl diphosphate as an allylic substrate and does not show activity for geranyl diphosphate and prenyl diphosphate [1].
History
created 1984 as EC 2.5.1.33, part transferred 2010 to EC 2.5.1.83
EC Tree
2.5.1.12 created 1972, deleted 1976
2.5.1.13 created 1972, deleted 1976
2.5.1.14 created 1972, deleted 1976
2.5.1.37 created 1989, deleted 2004
2.5.1.40 created 1992, deleted 1999