Tobacco microtubule-associated protein, MAP65-1c, bundles and stabilizes microtubules

Tobacco microtubule-associated protein, MAP65-1c, bundles and stabilizes microtubules
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烟草微管相关蛋白 MAP65-1c 使微管成束并稳定

DOI:
10.1007/s11103-010-9694-4
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发表时间:
2010-09
影响因子:
5.1
通讯作者:
Mao, Tonglin
Mao, Tonglin
中科院分区:
生物学2区
文献类型:
--
作者:
Meng, Qiutao;Du, Jizhou;Li, Jiejie;Lue, Xiaomei;Zeng, Xian;Yuan, Ming;Mao, Tonglin

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在烟草基因组中已鉴定出三个编码MAP65-1家族蛋白的基因。在本研究中,NtMAP65-1c融合蛋白被证明结合和捆绑微管(MTS)。进一步的体外研究表明,NtMAP65-1c不仅改变了MT的组装和成核,而且对寒冷或katanin引起的不稳定具有很高的MT稳定活性。对NtMAP65-1c-GFP在-2细胞中表达的分析表明,NtMAP65-1c能够在细胞周期的特定阶段与MTS结合。此外,在体内,NtMAP65-1c-GFP结合的皮质MTS对MT干扰药物丙氮酰胺以及低温的抵抗力增强。综上所述,这些结果有力地表明,NtMAP65-1c稳定MTS,并参与MT组织和细胞动力学的调节。
Three genes that encode MAP65-1 family proteins have been identified in theNicotiana tabacumgenome. In this study, NtMAP65-1c fusion protein was shown to bind and bundle microtubules (MTs). Further in vitro investigations demonstrated that NtMAP65-1c not only alters MT assembly and nucleation, but also exhibits high MT stabilizing activity against cold or katanin-induced destabilization. Analysis of NtMAP65-1c-GFP expressing BY-2 cells clearly demonstrated that NtMAP65-1c was able to bind to MTs during specific stages of the cell cycle. Furthermore, in vivo, NtMAP65-1c-GFP-bound cortical MTs displayed an increase in resistance against the MT-disrupting drug, propyzamide, as well as against cold temperatures. Taken together, these results strongly suggest that NtMAP65-1c stabilizes MTs and is involved in the regulation of MT organization and cellular dynamics.
DOI: 10.1105/tpc.108.063362
发表时间: 2008-12
期刊: The Plant Cell Online
影响因子: --
作者:
A. Smertenko;Despina Kaloriti;Hsin-Yu Chang;J. Fišerová;Z. Opatrný;P. Hussey
通讯作者: A. Smertenko;Despina Kaloriti;Hsin-Yu Chang;J. Fišerová;Z. Opatrný;P. Hussey
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影响因子: 2.8
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DOI: 10.1105/tpc.107.057422
发表时间: 2008-02-01
期刊: PLANT CELL
影响因子: 11.6
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DOI: 10.1016/j.cub.2004.02.032
发表时间: 2004-03-09
期刊: CURRENT BIOLOGY
影响因子: 9.2
作者:
Müller, S;Smertenko, A;Wagner, V;Heinrich, M;Hussey, PJ;Hauser, MT
通讯作者: Hauser, MT