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Functional analysis of Hu proteins that induce neuronal differentiation

Functional analysis of Hu proteins that induce neuronal differentiation
诱导神经元分化的Hu蛋白的功能分析
批准号:
12480210
负责人:
SAKAMOTO Hiroshi
金额:
$9.22万
依托单位:
依托单位国家:
日本
项目类别:
Grant-in-Aid for Scientific Research (B)
财政年份:
2000
资助国家:
日本
项目状态:
已结题
起止时间:
2000 至 2001

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中文摘要
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英文摘要
Hu proteins are RNA-binding proteins that are the vertebrate homologues of Drosophila ELAV, and are implicate in stabilization or enhanced translation of specific mRNAs with AU-rich elements (AREs) in the 3-untranslated region. Here, using the yeast two-hybrid system, we show that neuron-specific Hu proteins can interact with themselves. Immunoprecipitation assays demonstrated that the interaction between Hu proteins occurs in mammalian cells and is strongly enhanced in the presence of cellular RNA, Furthermore, using in situ chemical crosslinking assays, we found that HuD, one of the neuron-specific Hu proteins, multimerizes in cells. The crosslinked HuD multimers retain specific RNA-binding ability and can interact with additional Hu proteins. Consistent with this biochemical property, HuD showed granular distribution in two neurogenic cell lines. These results suggest that the RNA-bound form of HuD multimerizes cooperatively to form a specific granular structure that may serve as a site of post-transcriptional regulation of ARE-containing mRNAs.
期刊论文(12)
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Makoto Inoue: "NMR studies on functional structures of the AU-rich element-binding domains of Hu antigen C."Nucleic Acids Res.. 28. 1743-1750 (2000)
Makoto Inoue:“Hu 抗原 C 的富含 AU 元素结合域的功能结构的 NMR 研究。”核酸研究 28. 1743-1750 (2000)
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Kawano,T.: "Unique and redundant functions of SR proteins, a conserved family of splicing factors, in C.elegans development"Mech.Dev.. 95. 67-76 (2000)
Kawano,T.:“SR 蛋白(剪接因子的保守家族)在秀丽隐杆线虫发育中的独特和冗余功能”Mech.Dev.. 95. 67-76 (2000)
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通讯作者:
Inoue, M., Muto, Y., Sakamoto, H. and Yokoyama, Y.: "NMR studies on functional structures of the AU-rich element-binding domains of Hu antigen C"Nucleic Acids Res.. 28. 1743-1750 (2000)
Inoue, M.、Muto, Y.、Sakamoto, H. 和 Yokoyama, Y.:“Hu 抗原 C 富含 AU 元素结合域的功能结构的 NMR 研究”核酸研究 28. 1743-1750
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通讯作者:
Katsumi Kasashima: "Complex formation of the neuron-specific ELAV-like Hu RNA-binding proteins"Nucleic Acids Res.. 30. 4519-4526 (2002)
Katsumi Kasashima:“神经元特异性 ELAV 样 Hu RNA 结合蛋白的复杂形成”核酸研究 30. 4519-4526 (2002)
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6
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