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University of the Ryukyus Repository >
Faculty of Agriculture >
Bulletin >
The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus >
No.26 (1979/12) >
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| Title | : | 全トランスーレチナール脂質二重膜における L- システインの光化学反応(農薬生産用農産食料製造)(農芸化学科) |
| Title alternative | : | The photochemical reactions of L-cysteine on all-trans-retinal bilayer lipid membranes (Pesticide-producing Agricultural Food Processing)(Department of Agricultural Chemistry) |
| Authors | : | 小波本, 直忠
大城, 直子 |
| Authors alternative | : | Kobamoto, Naotada
Oshiro, Naoko |
| Issue Date | : | 11-Dec-1979 |
| Abstract | : | 膜で隔てた外室に電子受容体として塩化第二鉄を含む酢酸緩衝液(0.2M)中での全トランス-レチナール脂質二重膜は, 内室へのL-システインの添加により, 光電位の変化を示した。pH値が4.9以下では増強効果が認められ, 4.8において最高となり, 一方, 4.9より高い領域では減少効果が認められた。前者の増強効果は, 光電位発生の主荷電体, ホール, に対するL-システインの酸化還元作用として説明された。後者の減少効果は, 界面における全トランス-レチニルチアゾリジン-4-カルボン酸形成の分光学的影響として説明された。この膜系は, 昆虫の視覚に作用する食料起源の農薬の作用機構の理解と共に, L-システインと同様に作用する視覚阻害剤のスクリーニングにも利用できることが示された。
The light-induced potentials of an all-trans-retinal bilayer lipid membrane were influenced by the presence of L-cysteine in the aqueous phase, 0.2M sodium acetate buffer, having an electron acceptor, ferric chloride, in the opposite aqueous phase separated by the membrane. In a pH range up to 4.9,an enhancive effect was observed with the maximum at 4.8,whereas in a pH range beyond 4.9 a reductive effect was observed. The former enhancive effect was explained as a redox-related effect of L-cysteine on the major charge carrier, hole, of the photopotentials observed. The latter reductive effect was explained as a spectrophotometric effect of formation of all-trans-retinyl thiazolidine-4-carboxylic acid at the membrane interface. This membrane system was presented to be used for screening the vision inhibitors acting in a way similar to L-cysteine as well as understanding the mechanisms of the action of these potential food-originated pesticides on the insect vision. |
| Type Local | : | 紀要論文 |
| ISSN | : | 0370-4246 |
| Publisher | : | 琉球大学農学部 |
| URI | : | http://ir.lib.u-ryukyu.ac.jp/handle/123456789/4155 |
| Citation | : | 琉球大学農学部学術報告 = The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus no.26 p.151 -158 |
| Appears in Collections | : | No.26 (1979/12)
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