| CaMBP—10调节生长素应答反应机理初探 |
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| 引用本文： | 凌启阆,刘华.CaMBP—10调节生长素应答反应机理初探[J].南开大学学报,1997,30(2):101-103. |
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| 作者姓名： | 凌启阆 刘华 |
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| 作者单位： | 南开大学生物化学及分子生物学系!天津，300071 |
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| 摘 要： | 前期研究发现ＣａＭＢＰ－１０参与植物细胞对生长素应答反应的调节，但调节机理有待阐明，本文表明ＣａＭＢＰ－１０是由于影响质膜Ｈ－ＡＴＰａｓｅ活性，进而影响了质子外泌和细胞伸长，并进一步证明，它对质膜Ｈ－ＡＴＰａｓｅ活性的调节是通过介导该酶磷酸化而实现的最终调节了细胞对激素的应答。
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| 关 键 词： | 钙调素结合蛋白 生长素 应答反应 植物细胞 |
PRELIMINARY INVESTIGATION ON REGULATORY MECHANISM OF CaM BP-10 ON CELL RESPONSES TO AUXIN |
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| Ling Qilang, Liu Hua, Xiang Zuoyun, Shang Kejin.PRELIMINARY INVESTIGATION ON REGULATORY MECHANISM OF CaM BP-10 ON CELL RESPONSES TO AUXIN[J].Acta Scientiarum Naturalium University Nankaiensis,1997,30(2):101-103. |
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| Authors: | Ling Qilang Liu Hua Xiang Zuoyun Shang Kejin |
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| Abstract: | aM BP-10(BP-10) is a novel calmodulin (CaM) endogenous binding protein that wasobserved and isolated in plant by our research group. In preliminary studies, it was shownthat BP-10 was involved in the regulation on the responses of coleoptile to auxin. The present study shows that BP-10 inhibits cell responses to auxin through inhibiting the activityof plasma membrane H+-ATPase (PM H+-ATPase). In order to elucidate the regulatorymechanism of PM H+-ATPase activity by BP-10, the relationship between phosphorylation and activity of PM H+-ATPase has been investigated in vivo. The results prove thatBP-10 regulates the activity of PM H+-ATPase by mediating phosphorylation of the enzyme, as a result it affects cell responses to IAA. |
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| Keywords: | calmodulin calmodulin binding protein auxin PM H~+-ATPase phosphorylation |
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