Identification of enzymes involved in SUMOylation in Trypanosoma brucei.
Identification of enzymes involved in SUMOylation in Trypanosoma brucei.
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布氏锥虫 SUMO 化相关酶的鉴定
DOI:
10.1038/srep10097
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发表时间:
2015-05-11
影响因子:
4.6
通讯作者:
Tu X
中科院分区:
文献类型:
--
作者:
Ye K;Zhang X;Ni J;Liao S;Tu X
Small ubiquitin-like modifier (SUMO), a reversible post-translational protein modifier, plays important roles in diverse cellular mechanisms. Three enzymes, E1 (activating enzyme), E2 (conjugating enzyme) and E3 (ligase), are involved in SUMO modification. SUMOylation system and process in higher eukaryotes have been well studied. However, in protozoa, such as Trypanosoma brucei (T. brucei), these remain poorly understood. Herein, we identified the E1 (TbAos1/TbUba2) and E2 (TbUbc9) enzymes of SUMOylation pathway in T. brucei by sequence analysis and GST pull-down assay. Furthermore, we successfully reconstructed the SUMOylation system in vitro with recombinant enzymes. Using this system, the active site of TbUba2 and TbUbc9 was revealed to be located at Cys343 and Cys132, respectively and a centrin homologue (TbCentrin3) was identified to be a target of SUMOylation in T. brucei. Altogether, our results demonstrate that TbAos1/TbUba2 and TbUbc9 are the bona fide E1 and E2 enzymes of the SUMOylation system in T. brucei.
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影响因子:
3.7
作者:
Liao, Shanhui;Wang, Tao;Tu, Xiaoming
通讯作者:
Tu, Xiaoming
影响因子:
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作者:
Vertegaal, Alfred C. O.;Andersen, Jens S.;Lamond, Angus I.
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Lamond, Angus I.
影响因子:
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作者:
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Blobel, G
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11.4
作者:
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通讯作者:
Lima, CD