Isolation of ubiquitinated substrates by tandem affinity purification of E3 ligase-polyubiquitin-binding domain fusions (ligase traps).
Isolation of ubiquitinated substrates by tandem affinity purification of E3 ligase-polyubiquitin-binding domain fusions (ligase traps).
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通过将E3连接酶 - 聚氨酯结合结构域融合(连接酶陷阱)的串联纯度纯化(连接酶陷阱)分离出泛素化的底物。
DOI:
10.1038/nprot.2016.008
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发表时间:
2016-02
期刊:
影响因子:
14.8
通讯作者:
Toczyski DP
中科院分区:
文献类型:
--
作者:
Mark KG;Loveless TB;Toczyski DP
Ubiquitination is an essential protein modification that influences eukaryotic processes ranging from substrate degradation to nonproteolytic pathway alterations, including DNA repair and endocytosis. Previous attempts to analyze substrates via affinity purification approach in which ubiquitin ligases are fused to a polyubiquitin-binding domain, which allows the isolation ubiquitin. By using this protocol, ubiquitinated substrates that are specific for a given ligase can be isolated for mass spectrometry or western blot analysis. After cells have been collected, the described protocol can be completed in 2–3 d.
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