Identification of microtubule-associated proteins in the centrosome, spindle, and kinetochore of the early Drosophila embryo.

Identification of microtubule-associated proteins in the centrosome, spindle, and kinetochore of the early Drosophila embryo.
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早期果蝇胚胎中心体、纺锤体和动粒中微管相关蛋白的鉴定。

DOI:
10.1083/jcb.109.6.2977
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发表时间:
1989-12
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Alberts BM
Alberts BM
中科院分区:
其他
文献类型:
--
作者:
Kellogg DR;Field CM;Alberts BM

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我们已经开发了亲和层析方法分离微管相关蛋白(MAPs)从可溶性细胞质提取物,并使用它们来分析早期果蝇胚胎的细胞骨架。超过50种果蝇胚胎蛋白质与微管亲和柱结合。为了开始表征这些蛋白质,我们已经产生了特异性识别其中24种蛋白质的单个小鼠多克隆抗体。通过免疫荧光法判断,一些抗原定位于早期果蝇胚胎的有丝分裂纺锤体,而另一些则存在于中心体、动粒、微管亚群或这些结构的组合中。由于24种抗体中有20种染色微管结构,因此很可能大多数与我们的柱结合的蛋白质与体内微管相关。几乎没有MAPS在细胞中相同地定位,表明微管细胞骨架非常复杂。
We have developed affinity chromatography methods for the isolation of microtubule-associated proteins (MAPs) from soluble cytoplasmic extracts and have used them to analyze the cytoskeleton of the early Drosophila embryo. More than 50 Drosophila embryo proteins bind to microtubule affinity columns. To begin to characterize these proteins, we have generated individual mouse polyclonal antibodies that specifically recognize 24 of them. As judged by immunofluorescence, some of the antigens localize to the mitotic spindle in the early Drosophila embryo, while others are present in centrosomes, kinetochores, subsets of microtubules, or a combination of these structures. Since 20 of the 24 antibodies stain microtubule structures, it is likely that most of the proteins that bind to our columns are associated with microtubules in vivo. Very few MAPS seem to be identically localized in the cell, indicating that the microtubule cytoskeleton is remarkably complex.
DOI: 10.1083/jcb.101.4.1371
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影响因子: --
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