Structural basis for coupling protein transport and N-glycosylation at the mammalian endoplasmic reticulum.
Structural basis for coupling protein transport and N-glycosylation at the mammalian endoplasmic reticulum.
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DOI:
10.1126/science.aar7899
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发表时间:
2018-04-13
期刊:
影响因子:
--
通讯作者:
Beckmann R
中科院分区:
文献类型:
--
作者:
Braunger K;Pfeffer S;Shrimal S;Gilmore R;Berninghausen O;Mandon EC;Becker T;Förster F;Beckmann R
Protein synthesis, transport and N-glycosylation are coupled at the mammalian endoplasmic reticulum (ER) by complex formation of the ribosome, the Sec61 protein-conducting channel and the oligosaccharyltransferase (OST). Here, we used different cryo-electron microscopy approaches to determine structures of native and solubilized ribosome-Sec61-OST complexes. A molecular model for the catalytic OST subunit revealed how STT3A is integrated into the OST and how STT3 paralog specificity for translocon-associated OST is achieved. The OST subunit DC2 was placed at the interface between Sec61 and STT3A, where it acts as a versatile module for recruitment of STT3A-containing OST to the ribosome-Sec61 complex. This detailed structural view on the molecular architecture of the co-translational machinery for N-glycosylation provides the basis for a mechanistic understanding of glycoprotein biogenesis at the ER. Cryo-EM analysis reveals how co-translational protein transport and N-glycosylation are coupled at the mammalian endoplasmic reticulum.
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影响因子:
16.6
作者:
Pfeffer S;Burbaum L;Unverdorben P;Pech M;Chen Y;Zimmermann R;Beckmann R;Förster F
通讯作者:
Förster F
影响因子:
7.8
作者:
Yu, Y H;Sabatini, D D;Kreibich, G
通讯作者:
Kreibich, G
影响因子:
64.8
作者:
Gogala, Marko;Becker, Thomas;Beckmann, Roland
通讯作者:
Beckmann, Roland
影响因子:
64.8
作者:
Park, Eunyong;Rapoport, Tom A.
通讯作者:
Rapoport, Tom A.
DOI:
10.1083/jcb.201702159
发表时间:
2017-11-06
期刊:
The Journal of cell biology
影响因子:
--
作者:
Shrimal S;Cherepanova NA;Gilmore R
通讯作者:
Gilmore R