SPIN4 Is a Principal Endogenous Substrate of the E3 Ubiquitin Ligase DCAF16.
SPIN4 Is a Principal Endogenous Substrate of the E3 Ubiquitin Ligase DCAF16.
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DOI:
10.1021/acs.biochem.1c00067
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发表时间:
2021-03-09
期刊:
影响因子:
2.9
通讯作者:
Cravatt BF
中科院分区:
文献类型:
--
作者:
Zhang X;Thielert M;Li H;Cravatt BF
DCAF16 is a substrate recognition component of Cullin-RING E3 ubiquitin ligases that can be targeted by electrophilic PROTACs (PROteolysis Targeting Chimeras) to promote the nuclear-restricted degradation of proteins. The endogenous protein substates of DCAF16 remain unknown. In this study, we compared the protein content of DCAF16-wild type (WT) and DCAF16-knockout (KO) cells by untargeted mass spectrometry (MS)-based proteomics, identifying the Tudor domain-containing protein Spindlin-4 (SPIN4) as a protein that was substantially elevated in cells lacking DCAF16. Very few other proteomic changes were found in DCAF16-KO cells, pointing to a specific relationship between DCAF16 and SPIN4. Consistent with this hypothesis, we found that DCAF16 interacts with and ubiquitinates SPIN4, but not other related SPIN proteins, and identified a conserved lysine residue unique to SPIN4 that is involved in DCAF16 binding. Finally, we provide evidence that SPIN4 preferentially binds trimethylated histone H3K4 over other modified histone modifications. These results taken together, indicate that DCAF16 and SPIN4 form a dedicated E3 ligase-substrate complex that regulates the turnover and presumed functions of SPIN4 in human cells.
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影响因子:
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作者:
Zhang, Xiaoyu;Crowley, Vincent M.;Cravatt, Benjamin F.
通讯作者:
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DOI:
10.1146/annurev-pharmtox-010715-103507
发表时间:
2017-01-06
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通讯作者:
Gygi SP
影响因子:
4.8
作者:
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通讯作者:
Bedford, Mark T.