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::Hexaprenyl-diphosphate synthase ((2E,6E)-farnesyl-diphosphate specific)

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{{#invoke:Infobox|infobox}} Hexaprenyl-diphosphate synthase ((2E,6E)-farnesyl-diphosphate specific) (EC 2.5.1.83, HexPS, hexaprenyl pyrophosphate synthetase, hexaprenyl diphosphate synthase) is an enzyme with system name (2E,6E)-farnesyl-diphosphate:isopentenyl-diphosphate farnesyltranstransferase (adding 3 isopentenyl units).<ref>{{#invoke:Citation/CS1|citation |CitationClass=journal }}</ref><ref>{{#invoke:Citation/CS1|citation |CitationClass=journal }}</ref><ref>{{#invoke:Citation/CS1|citation |CitationClass=journal }}</ref> This enzyme catalyses the following chemical reaction

(2E,6E)-farnesyl diphosphate + 3 isopentenyl diphosphate <math>\rightleftharpoons</math> 3 diphosphate + all-trans-hexaprenyl diphosphate

The enzyme prefers farnesyl diphosphate to geranylgeranyl diphosphate as an allylic substrate.


Hexaprenyl-diphosphate synthase ((2E,6E)-farnesyl-diphosphate specific) sections
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{{#invoke:Infobox|infobox}} Hexaprenyl-diphosphate synthase ((2E,6E)-farnesyl-diphosphate specific) (EC 2.5.1.83, HexPS, hexaprenyl pyrophosphate synthetase, hexaprenyl diphosphate synthase) is an enzyme with system name (2E,6E)-farnesyl-diphosphate:isopentenyl-diphosphate farnesyltranstransferase (adding 3 isopentenyl units).<ref>{{#invoke:Citation/CS1|citation |CitationClass=journal }}</ref><ref>{{#invoke:Citation/CS1|citation |CitationClass=journal }}</ref><ref>{{#invoke:Citation/CS1|citation |CitationClass=journal }}</ref> This enzyme catalyses the following chemical reaction

(2E,6E)-farnesyl diphosphate + 3 isopentenyl diphosphate <math>\rightleftharpoons</math> 3 diphosphate + all-trans-hexaprenyl diphosphate

The enzyme prefers farnesyl diphosphate to geranylgeranyl diphosphate as an allylic substrate.


Hexaprenyl-diphosphate synthase ((2E,6E)-farnesyl-diphosphate specific) sections
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