Whole-genome screening identifies proteins localized to distinct nuclear bodies.
Whole-genome screening identifies proteins localized to distinct nuclear bodies.
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全基因组筛选鉴定定位于不同核体的蛋白质
DOI:
10.1083/jcb.201303145
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发表时间:
2013-10-14
期刊:
影响因子:
--
通讯作者:
Chen J
中科院分区:
文献类型:
--
作者:
Fong KW;Li Y;Wang W;Ma W;Li K;Qi RZ;Liu D;Songyang Z;Chen J
A genome-wide microscopy screen identifies proteins localized to Cajal bodies, paraspeckles, and other known and previously uncharacterized nuclear subcompartments. The nucleus is a unique organelle that contains essential genetic materials in chromosome territories. The interchromatin space is composed of nuclear subcompartments, which are defined by several distinctive nuclear bodies believed to be factories of DNA or RNA processing and sites of transcriptional and/or posttranscriptional regulation. In this paper, we performed a genome-wide microscopy-based screening for proteins that form nuclear foci and characterized their localizations using markers of known nuclear bodies. In total, we identified 325 proteins localized to distinct nuclear bodies, including nucleoli (148), promyelocytic leukemia nuclear bodies (38), nuclear speckles (27), paraspeckles (24), Cajal bodies (17), Sam68 nuclear bodies (5), Polycomb bodies (2), and uncharacterized nuclear bodies (64). Functional validation revealed several proteins potentially involved in the assembly of Cajal bodies and paraspeckles. Together, these data establish the first atlas of human proteins in different nuclear bodies and provide key information for research on nuclear bodies.
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