Proteomics Links Ubiquitin Chain Topology Change to Transcription Factor Activation.
Proteomics Links Ubiquitin Chain Topology Change to Transcription Factor Activation.
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蛋白质组学将泛素链拓扑变化与转录因子激活联系起来。
DOI:
10.1016/j.molcel.2019.07.001
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发表时间:
2019-10-03
期刊:
影响因子:
16
通讯作者:
Xu P
中科院分区:
文献类型:
--
作者:
Li Y;Dammer EB;Gao Y;Lan Q;Villamil MA;Duong DM;Zhang C;Ping L;Lauinger L;Flick K;Xu Z;Wei W;Xing X;Chang L;Jin J;Hong X;Zhu Y;Wu J;Deng Z;He F;Kaiser P;Xu P
A surprising complexity of ubiquitin signaling has emerged with identification of different ubiquitin chain topologies. However, mechanisms of how the diverse ubiquitin codes control biological processes remain poorly understood. Here, we use quantitative whole proteome mass spectrometry to identify yeast proteins that are regulated by lysine 11 (K11)-linked ubiquitin chains. The entire Met4 pathway, which links cell proliferation with sulfur amino acid metabolism, was significantly affected by K11 chains and selected for mechanistic studies. Previously we demonstrated that a K48-linked ubiquitin chain represses the transcription factor Met4. Here we show that efficient Met4 activation requires a K11-linked topology. Mechanistically our results propose that the K48 chain binds to a topology-selective tandem ubiquitin binding region in Met4 and competes with binding of the basal transcription machinery to the same region. The change to K11 enriched chain architecture releases this competition and permits binding of the basal transcription complex to activate transcription. Li et al. discovered that a chain topology change from K48 to K11 linkages on the transcription factor Met4 relives competition between the K48 chain and the basal transcription complex for binding to the Met4 tandem-UBD. These findings provided insight into the role of ubiquitin chain topologies in ubiquitin signaling.
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影响因子:
3
作者:
Bardou P;Mariette J;Escudié F;Djemiel C;Klopp C
通讯作者:
Klopp C
影响因子:
46.9
作者:
通讯作者:
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影响因子:
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作者:
Christiano R;Nagaraj N;Fröhlich F;Walther TC
通讯作者:
Walther TC
影响因子:
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作者:
Chang, Cheng;Zhang, Jiyang;Zhu, Yunping
通讯作者:
Zhu, Yunping
影响因子:
7
作者:
Gao, Yuan;Li, Yanchang;Xu, Ping
通讯作者:
Xu, Ping