8pql: Difference between revisions
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The entry | ==K48-linked ubiquitin chain formation with a cullin-RING E3 ligase and Cdc34: NEDD8-CUL2-RBX1-ELOB/C-FEM1C with trapped UBE2R2-donor UB-acceptor UB-SIL1 peptide== | ||
<StructureSection load='8pql' size='340' side='right'caption='[[8pql]], [[Resolution|resolution]] 3.76Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[8pql]] is a 8 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=8PQL OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=8PQL FirstGlance]. <br> | |||
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Electron Microscopy, [[Resolution|Resolution]] 3.76Å</td></tr> | |||
[[Category: | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SY8:5-azanylpentan-2-one'>SY8</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></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=8pql FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=8pql OCA], [https://pdbe.org/8pql PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=8pql RCSB], [https://www.ebi.ac.uk/pdbsum/8pql PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=8pql 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/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> [https://www.uniprot.org/uniprot/UBC_HUMAN UBC_HUMAN] Ubiquitin exists either covalently attached to another protein, or free (unanchored). When covalently bound, it is conjugated to target proteins via an isopeptide bond either as a monomer (monoubiquitin), a polymer linked via different Lys residues of the ubiquitin (polyubiquitin chains) or a linear polymer linked via the initiator Met of the ubiquitin (linear polyubiquitin chains). Polyubiquitin chains, when attached to a target protein, have different functions depending on the Lys residue of the ubiquitin that is linked: Lys-6-linked may be involved in DNA repair; Lys-11-linked is involved in ERAD (endoplasmic reticulum-associated degradation) and in cell-cycle regulation; Lys-29-linked is involved in lysosomal degradation; Lys-33-linked is involved in kinase modification; Lys-48-linked is involved in protein degradation via the proteasome; Lys-63-linked is involved in endocytosis, DNA-damage responses as well as in signaling processes leading to activation of the transcription factor NF-kappa-B. Linear polymer chains formed via attachment by the initiator Met lead to cell signaling. Ubiquitin is usually conjugated to Lys residues of target proteins, however, in rare cases, conjugation to Cys or Ser residues has been observed. When polyubiquitin is free (unanchored-polyubiquitin), it also has distinct roles, such as in activation of protein kinases, and in signaling.<ref>PMID:16543144</ref> <ref>PMID:19754430</ref> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Homo sapiens]] | |||
[[Category: Large Structures]] | |||
[[Category: Kleiger G]] | |||
[[Category: Liwocha J]] | |||
[[Category: Prabu JR]] | |||
[[Category: Schulman BA]] | |||