| Home > Articles > Published articles > Structural basis for the E3 ligase activity enhancement of yeast Nse2 by SUMO-interacting motifs |
| Date: | 2021 |
| Abstract: | Post-translational modification of proteins by ubiquitin and ubiquitin-like modifiers, such as SUMO, are key events in protein homeostasis or DNA damage response. Smc5/6 is a nuclear multi-subunit complex that participates in the recombinational DNA repair processes and is required in the maintenance of chromosome integrity. Nse2 is a subunit of the Smc5/6 complex that possesses SUMO E3 ligase activity by the presence of a SP-RING domain that activates the E2~SUMO thioester for discharge on the substrate. Here we present the crystal structure of the SUMO E3 ligase Nse2 in complex with an E2-SUMO thioester mimetic. In addition to the interface between the SP-RING domain and the E2, the complex reveals how two SIM (SUMO-Interacting Motif) -like motifs in Nse2 are restructured upon binding the donor and E2-backside SUMO during the E3-dependent discharge reaction. Both SIM interfaces are essential in the activity of Nse2 and are required to cope with DNA damage. |
| Grants: | Agencia Estatal de Investigación PGC2018-098423-B-I00 Agencia Estatal de Investigación PGC2018-097796-B-I00 Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-569 |
| Rights: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original. |
| Language: | Anglès |
| Document: | Article ; recerca ; Versió publicada |
| Subject: | X-ray crystallography ; Enzyme mechanisms ; Ubiquitin ligases |
| Published in: | Nature communications, Vol. 12 (December 2021) , ISSN 2041-1723 |
14 p, 3.6 MB |