{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"institution":[{"name":"bioRxiv"}],"indexed":{"date-parts":[[2026,1,15]],"date-time":"2026-01-15T19:39:11Z","timestamp":1768505951741,"version":"3.49.0"},"posted":{"date-parts":[[2023,4,14]]},"group-title":"Biochemistry","reference-count":65,"publisher":"openRxiv","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"accepted":{"date-parts":[[2023,6,7]]},"abstract":"<jats:title>SUMMARY<\/jats:title>\n                <jats:p>\n                  The SEL1L-HRD1 protein complex represents the most conserved branch of endoplasmic reticulum (ER)-associated degradation (ERAD); however, definitive evidence for the importance of SEL1L in HRD1 ERAD is lacking. Here we report that attenuation of the interaction between SEL1L and HRD1 impairs HRD1 ERAD function and has pathological consequences in mice. Our data show that\n                  <jats:italic>SEL1L<\/jats:italic>\n                  variant\n                  <jats:italic>p.Ser658Pro<\/jats:italic>\n                  (\n                  <jats:italic>SEL1L<\/jats:italic>\n                  <jats:sup>\n                    <jats:italic>S<\/jats:italic>\n                    658\n                    <jats:italic>P<\/jats:italic>\n                  <\/jats:sup>\n                  ) previously identified in Finnish Hound suffering cerebellar ataxia is a recessive hypomorphic mutation, causing partial embryonic lethality, developmental delay, and early-onset cerebellar ataxia in homozygous mice carrying the bi-allelic variant. Mechanistically,\n                  <jats:italic>SEL1L<\/jats:italic>\n                  <jats:sup>\n                    <jats:italic>S<\/jats:italic>\n                    658\n                    <jats:italic>P<\/jats:italic>\n                  <\/jats:sup>\n                  variant attenuates the SEL1L-HRD1 interaction and causes HRD1 dysfunction by generating electrostatic repulsion between SEL1L F668 and HRD1 Y30 residues. Proteomic screens of SEL1L and HRD1 interactomes revealed that the SEL1L-HRD1 interaction is prerequisite for the formation of a functional HRD1 ERAD complex, as SEL1L recruits not only the lectins OS9 and ERLEC1, but the E2 UBE2J1 and retrotranslocon DERLIN, to HRD1. These data underscore the pathophysiological importance and disease relevance of the SEL1L-HRD1 complex, and identify a key step in organizing the HRD1 ERAD complex.\n                <\/jats:p>","DOI":"10.1101\/2023.04.13.536796","type":"posted-content","created":{"date-parts":[[2023,4,17]],"date-time":"2023-04-17T03:00:19Z","timestamp":1681700419000},"source":"Crossref","is-referenced-by-count":2,"title":["SEL1L-HRD1 interaction is prerequisite for the formation of a functional HRD1 ERAD complex"],"prefix":"10.64898","author":[{"given":"Liangguang Leo","family":"Lin","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaoqiong","family":"Wei","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huilun Helen","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brent","family":"Pederson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mauricio","family":"Torres","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"You","family":"Lu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zexin Jason","family":"Li","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xiaodan","family":"Liu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hancheng","family":"Mao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Hui","family":"Wang","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Zhen","family":"Zhao","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shengyi","family":"Sun","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ling","family":"Qi","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"54368","reference":[{"key":"2023061211451064000_2023.04.13.536796v2.1","doi-asserted-by":"crossref","unstructured":"Olzmann, J. 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