Structural insights into the regulatory particle of the proteasome from Methanocaldococcus jannaschii.
Structural insights into the regulatory particle of the proteasome from Methanocaldococcus jannaschii.
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DOI:
10.1016/j.molcel.2009.04.021
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发表时间:
2009-05-14
期刊:
影响因子:
16
通讯作者:
Shi, Yigong
中科院分区:
文献类型:
--
作者:
Zhang, Fan;Hu, Min;Tian, Geng;Zhang, Ping;Finley, Daniel;Jeffrey, Philip D.;Shi, Yigong
Eukaryotic proteasome consists of a core particle (CP), which degrades unfolded protein, and a regulatory particle (RP), which is responsible for recognition, ATP-dependent unfolding and translocation of polyubiquitinated substrate protein. In the archaea Methanocaldococcus jannaschii, the RP is a homohexameric complex of proteasome-activating nucleotidase (PAN). Here we report the crystal structures of essential elements of the archaeal proteasome: the CP, the ATPase domain of PAN, and a distal subcomplex that is likely the first to encounter substrate. The distal subcomplex contains a coiled-coil segment and an OB-fold domain, both of which appear to be conserved in the eukaryotic proteasome. The OB domains of PAN form a hexameric ring with a 13-Å pore, which likely constitutes the outermost constriction of the substrate translocation channel. These studies reveal structural codes and architecture of the complete proteasome, identify potential substrate-binding sites, and uncover unexpected asymmetry in the RP of archaea and eukaryotes.
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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:
3.6
作者:
Hu, GQ;Lin, G;Li, HL
通讯作者:
Li, HL
DOI:
10.1038/80992
发表时间:
2000-11-01
期刊:
NATURE STRUCTURAL BIOLOGY
影响因子:
--
作者:
Groll, M;Bajorek, M;Finley, D
通讯作者:
Finley, D
影响因子:
5.6
作者:
Groll, M;Brandstetter, H;Huber, R
通讯作者:
Huber, R
影响因子:
64.8
作者:
Groll, M;Ditzel, L;Huber, R
通讯作者:
Huber, R