De Novo Formation of a Subnuclear Body

De Novo Formation of a Subnuclear Body
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DOI:
10.1126/science.1165216
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发表时间:
2008-12-12
期刊:
影响因子:
56.9
通讯作者:
Dundr, Miroslav
Dundr, Miroslav
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Kaiser, Trish E.;Intine, Robert V.;Dundr, Miroslav

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哺乳动物细胞核包含结构稳定的功能室。我们在这里表明其中一个Cajal身体(CB)可以从头形成。固定在两个CB结构成分的染色质上,例如螺旋蛋白和CB的功能成分,例如SMN复合物,剪接小核小核核糖核蛋白(RNP),小核仁RNP和小的Cajal Body-exter-特异性RNP形成形态上正常且明显具有功能性的CB的形成。 CB的生物发生不遵循分层组件途径,并具有自组织结构的标志。
The mammalian cell nucleus contains structurally stable functional compartments. We show here that one of them, the Cajal body ( CB), can be formed de novo. Immobilization on chromatin of both CB structural components, such as coilin, and functional components of the CB, such as the SMN complex, spliceosomal small nuclear ribonucleoproteins ( RNPs), small nucleolar RNPs, and small Cajal body- specific RNPs, is sufficient for the formation of a morphologically normal and apparently functional CB. Biogenesis of the CB does not follow a hierarchical assembly pathway and exhibits hallmarks of a self- organizing structure.