Abstract:
:TRAIP/RNF206 plays diverse roles in cell cycle progression, DNA damage response, and DNA repair pathways. Physiological importance of TRAIP is highlighted by the identification of pathogenic mutations of TRAIP gene in patients diagnosed with primordial dwarfism. Although the diverse functions of TRAIP in the nucleus have been well characterized, molecular mechanism of TRAIP retention in the nucleus has not been determined. Here, we discovered that TRAIP is post-translationally modified by the small ubiquitin-like protein (SUMO). In addition, we identified five SUMOylation sites in TRAIP, and successfully generated SUMOylation deficient mutant of TRAIP. In an attempt to define the functional roles of TRAIP SUMOylation, we discovered that SUMOylation deficient TRAIP is not retained in the nucleus. In addition, protein stability of SUMOylation deficient TRAIP is lower than wild type TRAIP, demonstrating that SUMOylation is critical for both proper subcellular localization and protein stability of TRAIP. Taken together, these findings improve the understanding clinical implication of TRAIP in various diseases including primordial dwarfism and cancers.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Park IS,Han Yg,Chung HJ,Jung YW,Kim Y,Kim Hdoi
10.1016/j.bbrc.2016.01.141subject
Has Abstractpub_date
2016-02-19 00:00:00pages
881-7issue
4eissn
0006-291Xissn
1090-2104pii
S0006-291X(16)30142-5journal_volume
470pub_type
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