View source for 6lbn


==Structure of SIL1-bound FEM1C==
<StructureSection load='6lbn' size='340' side='right'caption='[[6lbn]], [[Resolution|resolution]] 2.90&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6lbn]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6LBN OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6LBN FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.899&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6lbn FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6lbn OCA], [https://pdbe.org/6lbn PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6lbn RCSB], [https://www.ebi.ac.uk/pdbsum/6lbn PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6lbn ProSAT]</span></td></tr>
</table>
== Disease ==
[https://www.uniprot.org/uniprot/SIL1_HUMAN SIL1_HUMAN] Marinesco-Sjoegren syndrome. The disease is caused by variants affecting the gene represented in this entry.
== Function ==
[https://www.uniprot.org/uniprot/FEM1C_HUMAN FEM1C_HUMAN] Probable component of an E3 ubiquitin-protein ligase complex, in which it may act as a substrate recognition subunit.[https://www.uniprot.org/uniprot/SIL1_HUMAN SIL1_HUMAN] Required for protein translocation and folding in the endoplasmic reticulum (ER). Functions as a nucleotide exchange factor for the ER lumenal chaperone HSPA5.<ref>PMID:12356756</ref> 
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Degrons are elements within protein substrates that mediate the interaction with specific degradation machineries to control proteolysis. Recently, a few classes of C-terminal degrons (C-degrons) that are recognized by dedicated cullin-RING ligases (CRLs) have been identified. Specifically, CRL2 using the related substrate adapters FEM1A/B/C was found to recognize C degrons ending with arginine (Arg/C-degron). Here, we uncover the molecular mechanism of Arg/C-degron recognition by solving a subset of structures of FEM1 proteins in complex with Arg/C-degron-bearing substrates. Our structural research, complemented by binding assays and global protein stability (GPS) analyses, demonstrates that FEM1A/C and FEM1B selectively target distinct classes of Arg/C-degrons. Overall, our study not only sheds light on the molecular mechanism underlying Arg/C-degron recognition for precise control of substrate turnover, but also provides valuable information for development of chemical probes for selectively regulating proteostasis.

Molecular basis for arginine C-terminal degron recognition by Cul2(FEM1) E3 ligase.,Chen X, Liao S, Makaros Y, Guo Q, Zhu Z, Krizelman R, Dahan K, Tu X, Yao X, Koren I, Xu C Nat Chem Biol. 2021 Jan 4. pii: 10.1038/s41589-020-00704-3. doi:, 10.1038/s41589-020-00704-3. PMID:33398168<ref>PMID:33398168</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6lbn" style="background-color:#fffaf0;"></div>
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Chen X]]
[[Category: Liao S]]
[[Category: Xu C]]