PMID: 25871522
Wei H, Wang L, Ren X, Yu W, Lin J, Jin C, Xia B
Structural and functional characterization of tumor suppressors TIG3 and H-REV107.
FEBS Lett. 2015 May 8;589(11):1179-86. doi: 10.1016/j.febslet.2015.04.002. Epub, 2015 Apr 11.
H-REV107-like family proteins TIG3 and H-REV107 are class II tumor suppressors. Here we report that the C-terminal domains (CTDs) of TIG3 and H-REV107 can induce HeLa cell death independently. The N-terminal domain (NTD) of TIG3 enhances the cell death inducing ability of CTD, while NTD of H-REV107 plays an inhibitory role. The solution structure of TIG3 NTD is very similar to that of H-REV107 in overall fold. However, the CTD binding regions on NTD are different between TIG3 and H-REV107, which may explain their functional difference. As a result, the flexible main loop of H-REV107, but not that of TIG3, is critical for its NTD to modulate its CTD in inducing cell death.