Effects of rare earth ions on activity of RuBPcase in tobacco
文献类型：期刊论文
| 作者 | Chen, WJ; Gu, YH; Zhao, GW; Tao, Y; Luo, JP; Hu, TD; Tao Y(陶冶) ; Hu TD(胡天斗)
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| 刊名 | PLANT SCIENCE
 |
| 出版日期 | 2000 |
| 卷号 | 152期号:2页码:#REF! |
| 关键词 | rare earth ions RuBPcase tobacco |
| 通讯作者 | Chen, WJ (reprint author), Univ Sci & Technol China, Sch Life Sci, Hefei 230026, Peoples R China. |
| 英文摘要 | To investigate the physiological effects of rare earth ions, we have studied the effect of LaCl3 on the activity of ribulose 1,5-bisphosphate carboxylase (RuBPcase) in tobacco (Nicotiana tobacum). When treated with 20-80 mu mol/l LaCl3 in Hoagland solution by water culture or by spraying with 400-1600 mu mol/l LaC(l)3 in pot experiment, the total and initial activities of RuBPcase were raised gradually, but decreased when the concentrations of LaCl3 were greater than or equal to 200 mu mol/l in water culture and > 1600 mu mol/l by spraying. it was indicated that LaCl3 promoted the activation of RuBPcase at low concentrations in vivo. It was also proved that lanthanides (Ln(3+)) increased the activity of RuBPcase in vitro. Upon addition of different concentrations of Ln(3+) to replace Mg2+, the RuBPcase activity exhibited an apparently biphasic response curve. Among the three Ln(3+) tested, the activation effects of La3+ and Ce3+ on RuBPcase were greater than that of Gd3+, but the activation effects of all the three Ln(3+) were lower at high concentrations than that of Mg2+, showing strongly inhibitory function. The extended X-ray absorption fine structure study of ribulose 1,5-bisphosphate carboxylase/oxygenase (Rubisco)-La complex indicated that La is bound with the oxygen atoms of amino acid residues, with the distance of the La-O bond being 2.51 Angstrom. The mechanism of molecular interaction between Ln(3+) and RuBPcase is discussed. (C) 2000 Published by Elsevier Science Ireland Ltd. All rights reserved. |
| 学科主题 | Biochemistry & Molecular Biology; Plant Sciences |
| 类目[WOS] | Biochemistry & Molecular Biology ; Plant Sciences |
| 收录类别 | SCI |
| WOS记录号 | WOS:000085408900005 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/226490]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Chen, WJ,Gu, YH,Zhao, GW,et al. Effects of rare earth ions on activity of RuBPcase in tobacco[J]. PLANT SCIENCE,2000,152(2):#REF!. |
| APA | Chen, WJ.,Gu, YH.,Zhao, GW.,Tao, Y.,Luo, JP.,...&胡天斗.(2000).Effects of rare earth ions on activity of RuBPcase in tobacco.PLANT SCIENCE,152(2),#REF!. |
| MLA | Chen, WJ,et al."Effects of rare earth ions on activity of RuBPcase in tobacco".PLANT SCIENCE 152.2(2000):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
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