Immunological Studies on Pyruvate Orthophosphate Dikinase in C_3 Plants
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概要
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Pyruvate orthophosphate dikinase (PPDK) was detected in some C_3 plants, wheat, barley, rice and tobacco, by protein blotting using an antibody against maize PPDK, although the amounts were much lesser than those of C_4 plants. The PPDK activity in immature grains of rice was specifically immunoprecipitated by the anti-(maize) PPDK antibody. The molecular weight of the subunit of PPDK in all tested C_3 plants was similar (ca. 95 kD) to that of maize PPDK, and the fragment patterns of the C_3 PPDKs in peptide mapping were also similar to that of maize PPDK. These results suggest that C_3 PPDKs have a primary structure similar to that of maize PPDK. In order to obtain information about the expression of PPDK in C_3 plants, changes in the enzyme activity and in the amount of PPDK protein were investigated during the greening of rice seedlings. PPDK, which was found in the etiolated seedlings, decreased temporarily in an early stage of greening and then increased. The mechanism of this variation is discussed.
- 日本植物生理学会の論文
著者
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Matsuoka Makoto
National Institute of Agrobiological Resources
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Hata Shingo
Laboratory Of Plant Physiology Division Of Applied Biosciences Graduate School Of Agriculture Kyoto
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Hata Shingo
National Institute of Agrobiological Resources, Tsukuba Science City
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Hata Shingo
National Institute Of Agrobiological Resources Tsukuba Science City
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Matsuoka Makoto
National Agricultural Research Center For Kyushu-okinawa Region
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Matsuoka Makoto
National Agricultural Res. Center For The Kyushu-okinawa Region National Agriculture And Food Res. O
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