The human EKC/KEOPS complex is recruited to Cullin2 ubiquitin ligases by the human tumour antigen PRAME.
The human EKC/KEOPS complex is recruited to Cullin2 ubiquitin ligases by the human tumour antigen PRAME.
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DOI:
10.1371/journal.pone.0042822
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Stunnenberg HG
中科院分区:
文献类型:
--
作者:
Costessi A;Mahrour N;Sharma V;Stunnenberg R;Stoel MA;Tijchon E;Conaway JW;Conaway RC;Stunnenberg HG
The human tumour antigen PRAME (preferentially expressed antigen in melanoma) is frequently overexpressed during oncogenesis, and high PRAME levels are associated with poor clinical outcome in a variety of cancers. However, the molecular pathways in which PRAME is implicated are not well understood. We recently characterized PRAME as a BC-box subunit of a Cullin2-based E3 ubiquitin ligase. In this study, we mined the PRAME interactome to a deeper level and identified specific interactions with OSGEP and LAGE3, which are human orthologues of the ancient EKC/KEOPS complex. By characterizing biochemically the human EKC complex and its interactions with PRAME, we show that PRAME recruits a Cul2 ubiquitin ligase to EKC. Moreover, EKC subunits associate with PRAME target sites on chromatin. Our data reveal a novel link between the oncoprotein PRAME and the conserved EKC complex and support a role for both complexes in the same pathways.
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影响因子:
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通讯作者:
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DOI:
10.1016/s0006-291x(02)00939-7
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2002-08-30
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