Subunit cooperation in the Get1/2 receptor promotes tail-anchored membrane protein insertion.
Subunit cooperation in the Get1/2 receptor promotes tail-anchored membrane protein insertion.
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DOI:
10.1083/jcb.202103079
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发表时间:
2021-11-01
期刊:
影响因子:
--
通讯作者:
Shan SO
中科院分区:
文献类型:
--
作者:
Chio US;Liu Y;Chung S;Shim WJ;Chandrasekar S;Weiss S;Shan SO
Chio and Liu et al. show that the cytosolic domain of the Get2 membrane receptor plays an unforeseen role in remodeling and disassembling the targeting complex for nascent tail-anchored proteins. The new functions of Get2 are mediated by molecular recognition features in its disordered linker. The guided entry of tail-anchored protein (GET) pathway, in which the Get3 ATPase delivers an essential class of tail-anchored membrane proteins (TAs) to the Get1/2 receptor at the endoplasmic reticulum, provides a conserved mechanism for TA biogenesis in eukaryotic cells. The membrane-associated events of this pathway remain poorly understood. Here we show that complex assembly between the cytosolic domains (CDs) of Get1 and Get2 strongly enhances the affinity of the individual subunits for Get3•TA, thus enabling efficient capture of the targeting complex. In addition to the known role of Get1CD in remodeling Get3 conformation, two molecular recognition features (MoRFs) in Get2CD induce Get3 opening, and both subunits are required for optimal TA release from Get3. Mutation of the MoRFs attenuates TA insertion into the ER in vivo. Our results demonstrate extensive cooperation between the Get1/2 receptor subunits in the capture and remodeling of the targeting complex, and emphasize the role of MoRFs in receptor function during membrane protein biogenesis.
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影响因子:
8.8
作者:
Chio, Un Seng;Chung, SangYoon;Shan, Shu-ou
通讯作者:
Shan, Shu-ou
DOI:
10.1038/nrm3226
发表时间:
2011-11-16
期刊:
Nature reviews. Molecular cell biology
影响因子:
--
作者:
通讯作者:
--
影响因子:
3
作者:
Fang C;Noguchi T;Tominaga D;Yamana H
通讯作者:
Yamana H
影响因子:
14.9
作者:
Malhis N;Jacobson M;Gsponer J
通讯作者:
Gsponer J
影响因子:
3.7
作者:
Ingargiola, Antonino;Lerner, Eitan;Michalet, Xavier
通讯作者:
Michalet, Xavier