Localization of NuMA protein isoforms in the nuclear matrix of mammalian cells.

Localization of NuMA protein isoforms in the nuclear matrix of mammalian cells.
复制标题

NuMA 蛋白亚型在哺乳动物细胞核基质中的定位。

DOI:
10.1002/cm.970290208
复制
发表时间:
1994
影响因子:
--
通讯作者:
Brinkley,BR
Brinkley,BR
中科院分区:
--
文献类型:
--
作者:
Zeng,C;He,D;Brinkley,BR

文献摘要

参考文献

被引文献

相似文献

使用单克隆抗体2D 3产生的对kinetochore丰富的人类染色体制备,我们确定了一个高分子量的蛋白质与核染色的间期和极性染色的有丝分裂纺锤体中的pericentriolar区域。最初被称为嗜中心蛋白,该蛋白与纺锤体微管(MT)的负端缔合,并且似乎在纺锤体组织中是重要的[Tousson et al.,112:427-440]。嗜中心蛋白的部分cDNA序列与核有丝分裂器蛋白(NuMA)的全长cDNA序列的比较[Compton et al.,1992:J. Cell Biol.116:1395-1408; Yang等人,1992:J. Cell Biol.116:1303-1317]已经表明NuMA和嗜中心蛋白是相同的蛋白质。使用多克隆NuMA抗体,我们提供了进一步的证据,证明NuMA以亚型存在,如肽图谱和免疫印迹所示。连续分级实验沿着免疫荧光、免疫印迹和EM免疫金标记已证明NuMA同种型是核芯丝的新组分。因此,NuMA,一种长卷曲螺旋蛋白,似乎在细胞周期的间期和有丝分裂中具有双重功能。在间期,NuMA可能在核骨架中起结构作用,这可能在核组织和功能中很重要,而在有丝分裂中,NuMA似乎与纺锤体MT组织和染色体定位相关。
Using a monoclonal antibody 2D3 generated against a kinetochore-enriched human chromosome preparation, we identified a high molecular mass protein with nuclear staining in interphase and polar staining of the pericentriolar region in the mitotic spindle. Initially termed centrophilin, this protein associates with the minus-ends of spindle microtubules (MT) and appears to be important in spindle organization [Tousson et al., 1991: J. Cell Biol. 112: 427–440]. Comparison of a partial cDNA sequence obtained for centrophilin with the full length cDNA sequence of nuclear mitotic apparatus protein (NuMA)[Compton et al., 1992: J. Cell Biol. 116: 1395–1408; Yang et al., 1992: J. Cell Biol. 116: 1303–1317] has indicated that NuMA and centrophilin are the same protein. Using a polyclonal NuMA antibody, we have provided further evidence that NuMA exists as iso-forms as shown by peptide mapping and immunoblots. Sequential fractionation experiments along with immunofluorescence, immunoblotting, and EM immunogold labeling have demonstrated that NuMA isoforms are novel components of nuclear core filaments. Thus, NuMA, a long coiled-coil protein, appears to have dual functions in interphase and mitosis during the cell cycle. In interphase, NuMA likely plays a structural role in the nucleoskeleton that may be important in nuclear organization and functions, whereas in mitosis, NuMA appears to be associated with spindle MT organization and chromosome positioning.© 1994 Wiley-Liss, Inc.
有丝分裂时异质核核糖核蛋白在间期核基质核心丝和染色体周丝中的定位。
影响因子: 11.1
作者:
Dacheng He;Terence MARTINt;S. Penman
通讯作者: S. Penman
DOI: 10.1016/0014-4827(86)90478-7
发表时间: 1986
影响因子: 3.7
作者:
Price,CM;Pettijohn,DE
通讯作者: Pettijohn,DE
DOI: 10.1016/0092-8674(80)90359-1
发表时间: 1980-01-01
期刊: CELL
影响因子: 64.5
作者:
LYDERSEN, BK;PETTIJOHN, DE
通讯作者: PETTIJOHN, DE
检测中心体、有丝分裂纺锤体两极和中体中的 125 kDa 核蛋白丝分裂素。
DOI: --
发表时间: 1992
影响因子: 3.7
作者:
I. Todorov;R. Philipova;G. Joswig;D. Werner;F. Ramaekers
通讯作者: F. Ramaekers
DOI: 10.1126/science.1553545
发表时间: 1992-01-10
期刊: SCIENCE
影响因子: 56.9
作者:
BODE, J;KOHWI, Y;KOHWISHIGEMATSU, T
通讯作者: KOHWISHIGEMATSU, T