Structural basis of ubiquitin recognition by the deubiquitinating protease USP2.

Structural basis of ubiquitin recognition by the deubiquitinating protease USP2.
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DOI:
10.1016/j.str.2006.06.012
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发表时间:
2006-08
期刊:
Structure (London, England : 1993)
影响因子:
--
通讯作者:
Kroemer M
Kroemer M
中科院分区:
其他
文献类型:
--
作者:
Renatus M;Parrado SG;D'Arcy A;Eidhoff U;Gerhartz B;Hassiepen U;Pierrat B;Riedl R;Vinzenz D;Worpenberg S;Kroemer M

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去泛素化蛋白酶逆转蛋白质的泛素化,并将其靶蛋白从蛋白酶体的破坏中拯救出来。USP 2是一种半胱氨酸蛋白酶,是泛素特异性蛋白酶家族的成员,在前列腺癌中过表达并稳定脂肪酸合酶,脂肪酸合酶与一些侵袭性前列腺癌的恶性程度有关。在这里,我们报告的结构的人USP 2催化结构域的复合物与泛素。泛素使用两个主要位点与蛋白酶相互作用。如使用肽和泛素突变体的USP 2抑制试验所示,同时需要两个位点。此外,一层有序的水分子介导泛素和USP 2之间的关键相互作用。由于在先前解决的USP 7/泛素-醛复合物结构中的相同位置发现了其中的几个分子,因此我们提出了USP对水介导的泛素识别的一般机制。
Deubiquitinating proteases reverse protein ubiquitination and rescue their target proteins from destruction by the proteasome. USP2, a cysteine protease and a member of the ubiquitin specific protease family, is overexpressed in prostate cancer and stabilizes fatty acid synthase, which has been associated with the malignancy of some aggressive prostate cancers. Here, we report the structure of the human USP2 catalytic domain in complex with ubiquitin. Ubiquitin uses two major sites for the interaction with the protease. Both sites are required simultaneously, as shown by USP2 inhibition assays with peptides and ubiquitin mutants. In addition, a layer of ordered water molecules mediates key interactions between ubiquitin and USP2. As several of those molecules are found at identical positions in the previously solved USP7/ubiquitin-aldehyde complex structure, we suggest a general mechanism of water-mediated ubiquitin recognition by USPs.
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影响因子: 4
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