期刊
FEBS LETTERS
卷 591, 期 20, 页码 3211-3224出版社
WILEY
DOI: 10.1002/1873-3468.12831
关键词
endoplasmic reticulum; HSND2; protein targeting; signal recognition particle; SRP independent; transmembrane recognition complex
资金
- Israeli Science Foundation [791/14]
- DFG
- HOMFOR
Recently, understanding of protein targeting to the endoplasmic reticulum (ER) was expanded by the discovery of multiple pathways that function in parallel to the signal recognition particle (SRP). Guided entry of tail-anchored proteins and SRP independent (SND) are two such targeting pathways described in yeast. So far, no human SND component is functionally characterized. Here, we report hSnd2 as the first constituent of the human SND pathway able to support substrate-specific protein targeting to the ER. Similar to its yeast counterpart, hSnd2 is assumed to function as a membrane-bound receptor preferentially targeting precursors carrying C-terminal transmembrane domains. Our genetic and physical interaction studies show that hSnd2 is part of a complex network of targeting and translocation that is dynamically regulated.
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