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In enzymology, a trans-hexaprenyltranstransferase () is an enzyme that catalyzes the chemical reaction :all-trans-hexaprenyl diphosphate + isopentenyl diphosphate diphosphate + all-trans-heptaprenyl diphosphate Thus, the two substrates of this enzyme are all-trans-hexaprenyl diphosphate and isopentenyl diphosphate, whereas its two products are diphosphate and all-trans-heptaprenyl diphosphate. This enzyme belongs to the family of transferases, specifically those transferring aryl or alkyl groups other than methyl groups. The systematic name of this enzyme class is all-trans-hexaprenyl-diphosphate:isopentenyl-diphosphate hexaprenyltranstransferase. Other names in common use include all-trans-heptaprenyl-diphosphate synthase, heptaprenyl pyrophosphate synthase, heptaprenyl diphosphate synthase, and heptaprenyl pyrophosphate synthetase. This enzyme participates in biosynthesis of steroids. ==Structural studies== As of late 2007, 11 structures have been solved for this class of enzymes, with PDB accession codes , , , , , , , , , , and . 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Trans-hexaprenyltranstransferase」の詳細全文を読む スポンサード リンク
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