Subcellular localisation modulates ubiquitylation and degradation of Ascl1.
Subcellular localisation modulates ubiquitylation and degradation of Ascl1.
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DOI:
10.1038/s41598-018-23056-4
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发表时间:
2018-03-15
影响因子:
4.6
通讯作者:
Philpott A
中科院分区:
文献类型:
--
作者:
Gillotin S;Davies JD;Philpott A
The proneural transcription factor Ascl1 is a master regulator of neurogenesis, coordinating proliferation and differentiation in the central nervous system. While its expression is well characterised, post-translational regulation is much less well understood. Here we demonstrate that a population of chromatin-bound Ascl1 can be found associated with short chains of ubiquitin while cytoplasmic Ascl1 harbours much longer ubiquitin chains. Only cytoplasmic ubiquitylation targets Ascl1 for destruction, which occurs by conjugation of ubiquitin to lysines in the basic helix-loop-helix domain of Ascl1 and requires the E3 ligase Huwe1. In contrast, chromatin-bound Ascl1 associated with short ubiquitin-chains, which can occur on lysines within the N-terminal region or the bHLH domain and is not mediated by Huwe1, is not targeted for ubiquitin-mediated destruction. We therefore offer further insights into post-translational regulation of Ascl1, highlighting complex regulation of ubiquitylation and degradation in the cytoplasm and on chromatin.
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影响因子:
30.5
作者:
通讯作者:
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影响因子:
14.9
作者:
Kiparaki M;Zarifi I;Delidakis C
通讯作者:
Delidakis C
DOI:
10.1126/science.aaf4802
发表时间:
2016-07-15
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Urbán N;van den Berg DL;Forget A;Andersen J;Demmers JA;Hunt C;Ayrault O;Guillemot F
通讯作者:
Guillemot F
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通讯作者:
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影响因子:
11.8
作者:
Forget, Antoine;Bihannic, Laure;Ayrault, Olivier
通讯作者:
Ayrault, Olivier