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EC 2.5.1.84 Details
EC number
2.5.1.84
Accepted name
all-trans-nonaprenyl diphosphate synthase [geranyl-diphosphate specific]
Reaction
geranyl diphosphate + 7 isopentenyl diphosphate = 7 diphosphate + all-trans-nonaprenyl diphosphate
Other name(s)
nonaprenyl diphosphate synthase (ambiguous), solanesyl diphosphate synthase (ambiguous), SolPP synthase (ambiguous), SPP-synthase (ambiguous), SPP synthase (ambiguous), solanesyl-diphosphate synthase (ambiguous), OsSPS2
Systematic name
geranyl-diphosphate:isopentenyl-diphosphate transtransferase (adding 7 isopentenyl units)
Comment
(2E,6E)-Farnesyl diphosphate and geranylgeranyl diphosphate are less effective as substrates than geranyl diphosphate. The enzyme is involved in the synthesis of the side chain of menaquinone-9 [1]. In Oryza sativa the enzyme SPS2 is involved in providing solanesyl diphosphate for plastoquinone-9 formation [3].
History
created 1972 as EC 2.5.1.11, part transferred 2010 to EC 2.5.1.84
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