Evidence against Identity of the Atrazine Receptor Protein with the 33-Kilodalton Protein from Spinach Chloroplasts
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概要
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To evaluate the capacity of binding between the 33-kdalton protein and atrazine, we investigated the effect of the 33-kdalton protein on the inhibitory action of atrazine in spinach chloroplasts. The sensitivity of the Hill reaction with ferricyanide to atrazine was not affected at all by the added 33-kdalton protein. This fact suggests that the 33-kdalton protein is incapable of binding atrazine. In photosystem II particles defective in 33-kdalton protein, on the other hand, atrazine effectively inhibited the electron transport reaction from diphenylcarbazide to dichlorophenol indophenol. After the particles were treated with trypsin to eliminate the polypeptides having molecular masses of 34, 44 and 48 kdaltons, the electron transport reaction became markedly insensitive to atrazine. These findings indicate that the 33-kdalton protein is different from the atrazine receptor protein.
- 日本植物生理学会の論文
著者
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Kuwabara Tomohiko
Department Of Biology University Of Tokyo
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Murata Norio
Department Of Applied Physics Faculty Of Engineering Osaka University:(present Address)sanyo Electri
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