5lxh: Difference between revisions
New page: '''Unreleased structure''' The entry 5lxh is ON HOLD Authors: Mouilleron, S., Skytte Rasmussen, M., Kumar Shrestha, B., Wirth, M., Bowitz Larsen, K., Abudu Princely, Y., Sjottem, E., To... |
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The | ==GABARAP-L1 ATG4B LIR Complex== | ||
<StructureSection load='5lxh' size='340' side='right'caption='[[5lxh]], [[Resolution|resolution]] 1.58Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[5lxh]] is a 6 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=5LXH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5LXH 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]] 1.58Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=5lxh FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5lxh OCA], [https://pdbe.org/5lxh PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5lxh RCSB], [https://www.ebi.ac.uk/pdbsum/5lxh PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5lxh ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/GBRL1_HUMAN GBRL1_HUMAN] Increases cell-surface expression of kappa-type opioid receptor through facilitating anterograde intracellular trafficking of the receptor. Involved in formation of autophagosomal vacuoles.<ref>PMID:16431922</ref> <ref>PMID:20404487</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The cysteine protease ATG4B cleaves off one or more C-terminal residues of the inactive proform of proteins of the ortholog and paralog LC3 and GABARAP subfamilies of yeast Atg8 to expose a C-terminal glycine that is conjugated to phosphatidylethanolamine during autophagosome formation. We show that ATG4B contains a C-terminal LC3-interacting region (LIR) motif important for efficient binding to and cleavage of LC3 and GABARAP proteins. We solved the crystal structures of the GABARAPL1-ATG4B C-terminal LIR complex. Analyses of the structures and in vitro binding assays, using specific point mutants, clearly showed that the ATG4B LIR binds via electrostatic-, aromatic HP1 and hydrophobic HP2 pocket interactions. Both these interactions and the catalytic site-substrate interaction contribute to binding between LC3s or GABARAPs and ATG4B. We also reveal an unexpected role for ATG4B in stabilizing the unlipidated forms of GABARAP and GABARAPL1. In mouse embryonic fibroblast (MEF) atg4b knockout cells, GABARAP and GABARAPL1 were unstable and degraded by the proteasome. Strikingly, the LIR motif of ATG4B was required for stabilization of the unlipidated forms of GABARAP and GABARAPL1 in cells. | |||
ATG4B contains a C-terminal LIR motif important for binding and efficient cleavage of mammalian orthologs of yeast Atg8.,Skytte Rasmussen M, Mouilleron S, Kumar Shrestha B, Wirth M, Lee R, Bowitz Larsen K, Abudu Princely Y, O'Reilly N, Sjottem E, Tooze SA, Lamark T, Johansen T Autophagy. 2017 Feb 15:1-20. doi: 10.1080/15548627.2017.1287651. PMID:28287329<ref>PMID:28287329</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[ | </div> | ||
[[Category: | <div class="pdbe-citations 5lxh" style="background-color:#fffaf0;"></div> | ||
[[Category: | |||
[[Category: Abudu Princely | ==See Also== | ||
[[Category: Bowitz Larsen | *[[Autophagy-related protein 3D structures|Autophagy-related protein 3D structures]] | ||
[[Category: | *[[GABA receptor-associated protein 3D structures|GABA receptor-associated protein 3D structures]] | ||
[[Category: | == References == | ||
[[Category: | <references/> | ||
[[Category: Lee | __TOC__ | ||
[[Category: | </StructureSection> | ||
[[Category: Sjottem | [[Category: Homo sapiens]] | ||
[[Category: Tooze | [[Category: Large Structures]] | ||
[[Category: Abudu Princely Y]] | |||
[[Category: Bowitz Larsen K]] | |||
[[Category: Johansen T]] | |||
[[Category: Kumar Shrestha B]] | |||
[[Category: Lamark T]] | |||
[[Category: Lee R]] | |||
[[Category: Mouilleron S]] | |||
[[Category: Sjottem E]] | |||
[[Category: Skytte Rasmussen M]] | |||
[[Category: Tooze S]] | |||
[[Category: Wirth M]] | |||