Biophysical and structural insight into the USP8/14-3-3 interaction
Biophysical and structural insight into the USP8/14-3-3 interaction
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DOI:
10.1002/1873-3468.13017
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发表时间:
2018-04-01
期刊:
影响因子:
3.5
通讯作者:
Ottmann, Christian
中科院分区:
文献类型:
--
作者:
Centorrino, Federica;Ballone, Alice;Ottmann, Christian
The ubiquitin-specific protease 8 (USP8)/14-3-3 protein-protein interaction has recently been shown to exert a significant role in the pathogenesis of Cushing's disease (CD). USP8 is a deubiquitinase that prevents epidermal growth factor receptor (EGFR) degradation. Impairment of 14-3-3 binding leads to a higher deubiquitination of EGFR and results in a higher EGFR signaling and an increased production of adrenocorticotropic hormone. Here we report the high-resolution crystal structure of the 14-3-3 binding motif of USP8 surrounding Ser718 in complex with 14-3-3 zeta and characterize the interaction with fluorescence polarization and isothermal titration calorimetry. Furthermore, we analyze the effect of USP8 mutations identified in CD on binding to 14-3-3.