A new NEDD8-ligating system for cullin-4A

被引:213
作者
Osaka, F
Kawasaki, H
Aida, N
Saeki, M
Chiba, T
Kawashima, S
Tanaka, K
Kato, S [1 ]
机构
[1] Japan Sci & Technol Corp, JST, Kato Cytoprot Network Project, ERATO,Sagami Chem Res Ctr, Kanagawa 2290012, Japan
[2] Japan Sci & Technol Corp, CREST, Bunkyo Ku, Tokyo 1130021, Japan
[3] Tokyo Metropolitan Inst Med Sci, Bunkyo Ku, Tokyo 1130021, Japan
关键词
ubiquitin; ubiquitin-like protein; NEDD8; SUMO-1; cullin-4A; cdc53;
D O I
10.1101/gad.12.15.2263
中图分类号
Q2 [细胞生物学];
学科分类号
071009 ; 090102 ;
摘要
NEDD8 is a ubiquitin (Ub)-like protein. Here we report a novel ubiquitinylation-related pathway for modification by NEDD8. NEDD8 was activated by an El (Ub-activating enzyme)-like complex, consisting of APP-BP1 and hUba3 with high respective homologies to the amino-and carboxy-terminal regions of El and then linked to hUbc12 (a human homolog of yeast Ub-conjugating enzyme Ubc12p). The major target protein modified by NEDD8 was found to be Hs-cullin-4A (Cul-4A), a member of the family of human cullin/Cdc53 proteins functioning as an essential component of a multifunctional Ub-protein ligase E3 complex that has a critical role in Ub-mediated proteolysis.
引用
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页码:2263 / 2268
页数:6
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