SUMOylation of nuclear actin.
SUMOylation of nuclear actin.
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DOI:
10.1083/jcb.200905016
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发表时间:
2009-07-27
期刊:
影响因子:
--
通讯作者:
de Lanerolle P
中科院分区:
文献类型:
--
作者:
Hofmann WA;Arduini A;Nicol SM;Camacho CJ;Lessard JL;Fuller-Pace FV;de Lanerolle P
Actin, a major component of the cytoplasm, is also abundant in the nucleus. Nuclear actin is involved in a variety of nuclear processes including transcription, chromatin remodeling, and intranuclear transport. Nevertheless, the regulation of nuclear actin by posttranslational modifications has not been investigated. We now show that nuclear actin is modified by SUMO2 and SUMO3 and that computational modeling and site-directed mutagenesis identified K68 and K284 as critical sites for SUMOylating actin. We also present a model for the actin–SUMO complex and show that SUMOylation is required for the nuclear localization of actin.
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