Persistent mechanical linkage between sister chromatids throughout anaphase.

Persistent mechanical linkage between sister chromatids throughout anaphase.
复制标题

DOI:
10.1007/s00412-009-0224-6
复制
发表时间:
2009-10
期刊:
影响因子:
1.6
通讯作者:
Bloom K
Bloom K
中科院分区:
生物学3区
文献类型:
--
作者:
Harrison BD;Hoang ML;Bloom K

文献摘要

参考文献

被引文献

相似文献

在出芽酵母中,我们发现用荧光探针标记的姐妹 rDNA 阵列可以在中期可视化为两条可区分的链。在后期,这些臂位点被拉入纺锤体,在那里它们采用十字形结构,并在迁移到两极时拉伸 2.5 倍。因此,虽然姐妹 rDNA 阵列在中期出现分离,但姐妹臂基因座之间的机械联系在酵母的整个后期持续存在,如蚱蜢精母细胞中所示。这些连接部分依赖于粘连蛋白的保护剂 SGO1。在后期,这些机械连接的空间调节溶解有助于防止姐妹过早分离并抑制纺锤体伸长率。因此,姐妹分离在时间上受到控制,姐妹染色单体之间的联系有助于后期纺锤体伸长的调节。
In budding yeast, we have found that sister rDNA arrays marked with fluorescent probes can be visualized as two distinguishable strands during metaphase. Upon anaphase, these arm loci are drawn into the spindle, where they adopt a cruciform-like structure and stretch 2.5-fold as they migrate to the poles. Therefore, while sister rDNA arrays appear separated in metaphase, mechanical linkages between sister arm loci persist throughout anaphase in yeast, as shown in grasshopper spermatocytes. These linkages are partially dependent on the protector of cohesin, SGO1. In anaphase, the spatially regulated dissolution of these mechanical linkages serves to prevent premature sister separation and restrain the rate of spindle elongation. Thus, sister separation is temporally controlled and linkages between sister chromatids contribute to the regulation of anaphase spindle elongation.
DOI: 10.1083/jcb.151.4.749
发表时间: 2000-11-13
期刊: The Journal of cell biology
影响因子: --
作者:
Sumara I;Vorlaufer E;Gieffers C;Peters BH;Peters JM
通讯作者: Peters JM
DOI: 10.1083/jcb.151.5.1047
发表时间: 2000-11-27
影响因子: 7.8
作者:
Laloraya, S;Guacci, V;Koshland, D
通讯作者: Koshland, D
DOI: 10.1016/j.cub.2004.11.052
发表时间: 2004-12-14
期刊: CURRENT BIOLOGY
影响因子: 9.2
作者:
Paliulis, LV;Nicklas, RB
通讯作者: Nicklas, RB
DOI: 10.1083/jcb.152.1.27
发表时间: 2001-01-08
影响因子: 7.8
作者:
Jensen, S;Segal, M;Clarke, D J;Reed, S I
通讯作者: Reed, S I
DOI: 10.1002/j.1460-2075.1995.tb00048.x
发表时间: 1995-08-01
期刊: EMBO JOURNAL
影响因子: 11.4
作者:
PIATTI, S;LENGAUER, C;NASMYTH, K
通讯作者: NASMYTH, K