DEAD box protein DDX1 regulates cytoplasmic localization of KSRP.
DEAD box protein DDX1 regulates cytoplasmic localization of KSRP.
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DOI:
10.1371/journal.pone.0073752
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发表时间:
2013
期刊:
影响因子:
3.7
通讯作者:
Chen CY
中科院分区:
文献类型:
--
作者:
Chou CF;Lin WJ;Lin CC;Luber CA;Godbout R;Mann M;Chen CY
mRNA decay mediated by the AU-rich elements (AREs) is one of the most studied post-transcriptional mechanisms and is modulated by ARE-binding proteins (ARE-BPs). To understand the regulation of K homology splicing regulatory protein (KSRP), a decay-promoting ARE-BP, we purified KSRP protein complexes and identified an RNA helicase, DDX1. We showed that down-regulation of DDX1 expression elevated cytoplasmic levels of KSRP and facilitated ARE-mediated mRNA decay. Association of KSRP with 14-3-3 proteins, that are predominately located in the cytoplasm, increased upon reduction of DDX1. We also demonstrated that KSRP associated with DDX1 or 14-3-3, but not both. These observations indicate that subcellular localization of KSRP is regulated by competing interactions with DDX1 or 14-3-3.
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影响因子:
9.8
作者:
Gherzi R;Trabucchi M;Ponassi M;Ruggiero T;Corte G;Moroni C;Chen CY;Khabar KS;Andersen JS;Briata P
通讯作者:
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影响因子:
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作者:
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Blackshear, PJ