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| 不同价金属离子介导的蓝膜到紫膜转换的光谱分析 | |
| 作者姓名： | Xu B Han JD Yu P Zhang Y Hu KS |
| 作者单位： | 1. 上饶师范学院生命科学系,江西上饶,334001 2. 吉林大学物理学院,吉林长春,130012 3. 中国科学院生物物理研究所,北京,100101 |
| 基金项目： | 江西省自然科学基金项目,科技部"973"项目 |
| 摘 要： | 研究了Na+,Mg2+和Tb3+三种不同价金属离子介导的的蓝膜到紫膜转换的可见差光谱,M412产率和Mt412衰减寿命.结果表明,他们的转换能力有很大差别,三种不同离子介导的吸收变化的中间点的浓度比Na+:Mg2+:Tb3+为1:2.5:650,同时,在蓝膜到紫膜转换中,其540nm的吸收变化的曲线与M412产率变化的... |
| 关 键 词： | 紫膜 蓝膜 金属离子 光谱分析 |
Spectrum analysis of blue to purple membrane transition induced by diverse valent cations |
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| Xu B,Han JD,Yu P,Zhang Y,Hu KS.Spectrum analysis of blue to purple membrane transition induced by diverse valent cations[J].Spectroscopy and Spectral Analysis,2011,31(5):1388-1392. | |
| Authors: | Xu Bing Han Jin-duo Yu Peng Zhang Yong Hu Kun-sheng |
| Institution: | Department of Life Science, Shangrao Normal University, Shangrao 334001, China. xubng@126.com |
| Abstract: | The visible difference spectra, M412 yield and M412 decay lifetime in blue membrane (bM) to purple membrane (pM) transition induced by Na+ , Mg2+ and Tb3+ metal ions were characterized. The transition ability from bM to pM induced by Tb3+ , Mg2+ and Na+ has distinguished difference, their concentration ratio at the midpoint of ion-induced absorbance changes is 1:2.5:650. Meanwhile, the curve of absorbance changes at 540 nm is similar to that of M412 yield changes in bM to pM transition. The M412 decay lifetime of regenerative pM induced by Tb3+ was prolonged remarkably when more Tb3+ was added. However, for the other two ions, additional ions have no effects on its lifetime. These results suggest that diverse valence metal ions exist in different binding ways from pM. |
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