Phosphorylation-dependent mitotic SUMOylation drives nuclear envelope-chromatin interactions.
Phosphorylation-dependent mitotic SUMOylation drives nuclear envelope-chromatin interactions.
复制标题
DOI:
10.1083/jcb.202103036
复制
发表时间:
2021-12-06
期刊:
影响因子:
--
通讯作者:
Wozniak RW
中科院分区:
文献类型:
--
作者:
Ptak C;Saik NO;Premashankar A;Lapetina DL;Aitchison JD;Montpetit B;Wozniak RW
Late in mitosis, chromatin interactions with the inner nuclear membrane (INM) are reestablished and passed to postmitotic nuclei. As shown in Ptak and Saik et al., in S. cerevisiae this process is supported by a wave of SUMOylation at the INM directed by the binding of the SUMO E3-ligase Siz2 to the VAP protein Scs2. In eukaryotes, chromatin binding to the inner nuclear membrane (INM) and nuclear pore complexes (NPCs) contributes to spatial organization of the genome and epigenetic programs important for gene expression. In mitosis, chromatin–nuclear envelope (NE) interactions are lost and then formed again as sister chromosomes segregate to postmitotic nuclei. Investigating these processes in S. cerevisiae, we identified temporally and spatially controlled phosphorylation-dependent SUMOylation events that positively regulate postmetaphase chromatin association with the NE. Our work establishes a phosphorylation-mediated targeting mechanism of the SUMO ligase Siz2 to the INM during mitosis, where Siz2 binds to and SUMOylates the VAP protein Scs2. The recruitment of Siz2 through Scs2 is further responsible for a wave of SUMOylation along the INM that supports the assembly and anchorage of subtelomeric chromatin at the INM and localization of an active gene (INO1) to NPCs during the later stages of mitosis and into G1-phase.
登录
查看更多内容
影响因子:
3.2
作者:
Freudenreich CH;Su XA
通讯作者:
Su XA
影响因子:
64.8
作者:
Falk, Martin;Feodorova, Yana;Mirny, Leonid A.
通讯作者:
Mirny, Leonid A.
影响因子:
5.3
作者:
Andrulis, ED;Zappulla, DC;Sternglanz, R
通讯作者:
Sternglanz, R
影响因子:
3.3
作者:
Goto A;Liu X;Robinson CA;Ridgway ND
通讯作者:
Ridgway ND
影响因子:
4.8
作者:
Gaspar, Maria L.;Chang, Yu-Fang;Henry, Susan A.
通讯作者:
Henry, Susan A.