Structural and functional insights into the roles of the Mms21 subunit of the Smc5/6 complex.
Structural and functional insights into the roles of the Mms21 subunit of the Smc5/6 complex.
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DOI:
10.1016/j.molcel.2009.06.032
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发表时间:
2009-09-11
期刊:
影响因子:
16
通讯作者:
Ye, Hong
中科院分区:
文献类型:
--
作者:
Duan, Xinyuan;Sarangi, Prabha;Liu, Xianpeng;Rangi, Gurdish K.;Zhao, Xiaolan;Ye, Hong
The Smc5/6 complex is an evolutionarily conserved chromosomal ATPase required for cell growth and DNA repair. Its Mms21 subunit supports both functions by docking to the arm region of Smc5 and providing SUMO ligase activity. Here we report the crystal structure of Mms21 in complex with the Smc5 arm. Our structure revealed two distinct structural and functional domains of the Smc5-bound Mms21: its N-terminal half is dedicated to Smc5 binding by forming a helix bundle with a coiled-coil structure of Smc5; its C-terminal half includes the SUMO ligase domain, which adopts a new type of RING E3 structure. Mutagenesis and structural analyses showed that the Mms21-Smc5 interface is required for cell growth and resistance to DNA damage, while the unique Mms21 RING domain confers specificity to the SUMO E2–E3 interaction. Through structure-based dissection of Mms21 functions, our studies establish a framework for understanding its roles in the Smc5/6 complex.
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影响因子:
4.8
作者:
Chen, Sheng-hong;Smolka, Marcus B.;Zhou, Huilin
通讯作者:
Zhou, Huilin
DOI:
10.1083/jcb.200111002
发表时间:
2002-02-04
期刊:
The Journal of cell biology
影响因子:
--
作者:
Anderson DE;Losada A;Erickson HP;Hirano T
通讯作者:
Hirano T
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
作者:
Emsley, P;Cowtan, K
通讯作者:
Cowtan, K
影响因子:
16
作者:
Haering, CH;Löwe, J;Nasmyth, K
通讯作者:
Nasmyth, K
影响因子:
16
作者:
Haering, CH;Schoffnegger, D;Löwe, J
通讯作者:
Löwe, J