Abstract：
:Terminally misfolded proteins are selectively recognized and cleared by the endoplasmic reticulum-associated degradation (ERAD) pathway. SEL1L, a component of the ERAD machinery, plays an important role in selecting and transporting ERAD substrates for degradation. We have determined the crystal structure of the mouse SEL1L central domain comprising five Sel1-Like Repeats (SLR motifs 5 to 9; hereafter called SEL1L(cent)). Strikingly, SEL1L(cent) forms a homodimer with two-fold symmetry in a head-to-tail manner. Particularly, the SLR motif 9 plays an important role in dimer formation by adopting a domain-swapped structure and providing an extensive dimeric interface. We identified that the full-length SEL1L forms a self-oligomer through the SEL1L(cent) domain in mammalian cells. Furthermore, we discovered that the SLR-C, comprising SLR motifs 10 and 11, of SEL1L directly interacts with the N-terminus luminal loops of HRD1. Therefore, we propose that certain SLR motifs of SEL1L play a unique role in membrane bound ERAD machinery.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Jeong H,Sim HJ,Song EK,Lee H,Ha SC,Jun Y,Park TJ,Lee Cdoi
10.1038/srep20261subject
Has Abstractpub_date
2016-02-09 00:00:00pages
20261issn
2045-2322pii
srep20261journal_volume
6pub_type
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