The C-terminus of Ubl4A is critical for pro-death activity and association with the Arp2/3 complex.
The C-terminus of Ubl4A is critical for pro-death activity and association with the Arp2/3 complex.
复制标题
DOI:
10.1016/j.bbrc.2018.08.123
复制
发表时间:
2018-09-18
影响因子:
3.1
通讯作者:
Xiang J
中科院分区:
文献类型:
--
作者:
Yao Q;Zhang H;Zhao Y;Ye Z;Lee YJ;Xiang J
Ubl4A is a small ubiquitin-like protein involved in diverse cellular functions. We have shown that Ubl4A is critical for survival of the starvation-mediated cell death in vivo. The underlying mechanism for this is through interaction with the actin-related protein Arp2/3 complex and promotion of actin branching. Interestingly, “put-back” of Ubl4A to Ubl4A-deficient cells also results in cell death. Removal of the Ubl4A N-terminus significantly enhances its cytotoxicity, indicating that the pro-death activity of Ubl4A is mainly from its C-terminal region. In vitro protein pull-down assays show that the C-terminal region of Ubl4A can directly interact with the Arp2/3 complex. The single point mutation of an aspartic acid to alanine (D122A) in the Ubl4A C-terminus abolishes its ability to bind the Arp2/3 complex. This mutation also destabilizes Ubl4A proteins susceptible to protease degradation. Importantly, expression of wild-type Ubl4A can induce cell death in colon cancer cells, but such pro-death activity is diminished in the D122A mutant. These data suggest that Ubl4A C-terminus, especially D122, is critical for Ubl4A-Arp2/3 interaction and its pro-death function.
登录
查看更多内容
DOI:
10.1073/pnas.1402745112
发表时间:
2015-01-06
影响因子:
11.1
作者:
Mock, Jee-Young;Chartron, Justin William;Clemons, William Melvon, Jr.
通讯作者:
Clemons, William Melvon, Jr.
影响因子:
7.8
作者:
Welch, MD;DePace, AH;Verma, S;Iwamatsu, A;Mitchison, TJ
通讯作者:
Mitchison, TJ
影响因子:
16
作者:
Wang F;Whynot A;Tung M;Denic V
通讯作者:
Denic V
DOI:
10.1016/j.bbrc.2016.12.094
发表时间:
2017-01-29
影响因子:
3.1
作者:
Zhao, Yu;Zhang, Huaiyuan;Xiang, Jialing
通讯作者:
Xiang, Jialing
影响因子:
4.8
作者:
Krenciute, Giedre;Liu, Shangfeng;Wang, Yi
通讯作者:
Wang, Yi