Distinct protein interaction domains and protein spreading in a complex centromere.

Distinct protein interaction domains and protein spreading in a complex centromere.
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复杂着丝粒中独特的蛋白质相互作用域和蛋白质扩散。

DOI:
10.1101/gad.14.7.783
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发表时间:
2000
影响因子:
10.5
通讯作者:
R. Allshire
R. Allshire
中科院分区:
生物学1区
文献类型:
--
作者:
J. Partridge;B. Borgstrøm;R. Allshire

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分裂酵母(Schizosaccharomyces pombe)着丝粒由大的(40-100 kb)反向重复组成,具有异色特征,因此为高级真核生物着丝粒提供了良好的模型。通过定量染色质免疫沉淀,介导着丝粒1区域特异性沉默的三种蛋白的关联已经被绘制出来。Swi6和Chp1局限于外侧重复序列,而Swi6可以分布在cen1中至少3kb的外染色质上。相反,Mis6覆盖了内部重复序列和核心。tRNA基因划分了这个过渡区。这些分析清楚地定义了在这个复杂的着丝粒中与不同蛋白质相互作用的两个不同的区域。
Fission yeast (Schizosaccharomyces pombe) centromeres are composed of large (40-100 kb) inverted repeats that display heterochromatic features, thus providing a good model for higher eukaryotic centromeres. The association of three proteins that mediate region-specific silencing across centromere 1 has been mapped by quantitative chromatin immunoprecipitation. Swi6 and Chp1 are confined to the flanking outer repeats and Swi6 can spread across at least 3 kb of extraneous chromatin in cen1. In contrast, Mis6 coats the inner repeats and central core. tRNA genes demarcate this transition zone. These analyses clearly define two distinct domains within this complex centromere which interact with different proteins.
DOI: --
发表时间: 1994-03
期刊: Genetics
影响因子: 3.3
作者:
J. Keeney;J. Boeke
通讯作者: J. Keeney;J. Boeke
DOI: 10.1016/s0959-437x(05)80055-3
发表时间: 1994-04-01
影响因子: 4
作者:
KARPEN, GH
通讯作者: KARPEN, GH
DOI: 10.1101/gad.11.1.83
发表时间: 1997-01-01
影响因子: 10.5
作者:
StrahlBolsinger, S;Hecht, A;Grunstein, M
通讯作者: Grunstein, M