Subcellular Fractionation of Polyprenyl Diphosphate Synthase Activities Responsible for the Syntheses of Polyprenols and Dolichols in Spinach Leaves.
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- Sakaihara Toshimichi
- Institute for Chemical Reaction Science. Tohoku Unirersiry
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- Honda Atsuko
- Institute for Chemical Reaction Science. Tohoku Unirersiry
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- Tateyama Seiji
- Institute for Chemical Reaction Science. Tohoku Unirersiry
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- Sagami Hiroshi
- Institute for Chemical Reaction Science. Tohoku Unirersiry
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Polyisoprenoid alcohols occurring in spinach leaves were analyzed by a two-plate TLC method. Z, E-mixed polyprenols (C55-60), glycinoprenols (C50-55), and solanesol (C45) were mainly found in chloroplasts, whereas dolichols (C70-80) were mainly found in microsomes. Analysis of enzymatic products derived from [1-14C] isopentenyl diphosphate and farnesyl diphosphate (FPP) with subcellular fractions revealed that chloroplasts and microsomes had the ability to synthesize Z, E-mixed polyprenyl (C50-65) and all E-polyprenyl (C45-50) diphosphates, and Z, E-mixed polyprenyl (C70-65) diphosphates, respectively. FPP and geranylgeranyl diphosphate (GGPP) were both accepted for these enzymatic reactions, the former being a better substrate than the latter. NMR analysis of naturally occurring spinach Z, E-mixed polyprenol (C55) and dolichol (C75) revealed that the number of internal trans isoprene residues in the former was three in comparison with two internal trans residues found for the latter. These results indicate that two kinds of polyprenyl diphosphate synthases occur in spinach: One is the chloroplast enzyme involved in the synthesis of the shorter-chain (C50-65) Z, E-mixed polyprenols and the other is the microsomal enzyme involved in the synthesis of longer-chain (C70-85) Z, E-mixed polyprenols, which is converted to dolichols.
収録刊行物
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- The Journal of Biochemistry
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The Journal of Biochemistry 128 (6), 1073-1078, 2000
社団法人 日本生化学会
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詳細情報 詳細情報について
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- CRID
- 1390001204894676992
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- NII論文ID
- 130003534021
- 10005835685
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- NII書誌ID
- AA00694073
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- COI
- 1:CAS:528:DC%2BD3MXoslSlsQ%3D%3D
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- ISSN
- 17562651
- 0021924X
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- NDL書誌ID
- 5597638
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- PubMed
- 11098151
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可