Dynamic SUMO modification regulates mitotic chromosome assembly and cell cycle progression in Caenorhabditis elegans.
Dynamic SUMO modification regulates mitotic chromosome assembly and cell cycle progression in Caenorhabditis elegans.
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DOI:
10.1038/ncomms6485
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发表时间:
2014-12-05
影响因子:
16.6
通讯作者:
Hay, Ronald T.
中科院分区:
文献类型:
--
作者:
Pelisch, Federico;Sonneville, Remi;Pourkarimi, Ehsan;Agostinho, Ana;Blow, J. Julian;Gartner, Anton;Hay, Ronald T.
The small ubiquitin-like modifier (SUMO), initially characterized as a suppressor of a mutation in the gene encoding the centromeric protein MIF2, is involved in many aspects of cell cycle regulation. The dynamics of conjugation and deconjugation and the role of SUMO during the cell cycle remain unexplored. Here we used Caenorhabditis elegans to establish the contribution of SUMO to a timely and accurate cell division. Chromatin-associated SUMO conjugates increase during metaphase but decrease rapidly during anaphase. Accumulation of SUMO conjugates on the metaphase plate and proper chromosome alignment depend on the SUMO E2 conjugating enzyme UBC-9 and SUMO E3 ligase PIASGEI-17. Deconjugation is achieved by the SUMO protease ULP-4 and is crucial for correct progression through the cell cycle. Moreover, ULP-4 is necessary for Aurora BAIR-2 extraction from chromatin and relocation to the spindle mid-zone. Our results show that dynamic SUMO conjugation plays a role in cell cycle progression. The ubiquitin-like modifier SUMO is involved in many aspects of the cell cycle, but its dynamics during mitosis are unknown. Here, Pelisch et al. use C. elegans to show that SUMO accumulates on the metaphase plate and is required for proper chromosome alignment, and deconjugation is required to progress through the cell cycle.
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