6hv4: Difference between revisions
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<StructureSection load='6hv4' size='340' side='right'caption='[[6hv4]], [[Resolution|resolution]] 3.00Å' scene=''> | <StructureSection load='6hv4' size='340' side='right'caption='[[6hv4]], [[Resolution|resolution]] 3.00Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[6hv4]] is a | <table><tr><td colspan='2'>[[6hv4]] is a 20 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_S288C Saccharomyces cerevisiae S288C]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6HV4 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6HV4 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GQK:(2~{S})-3-(4-methoxyphenyl)-~{N}-[(2~{S},3~{R})-4-methyl-3,4-bis(oxidanyl)-1-phenyl-pentan-2-yl]-2-[[(2~{S})-2-(2-morpholin-4-ylethanoylamino)propanoyl]amino]propanamide'>GQK</scene>, <scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=GQK:(2~{S})-3-(4-methoxyphenyl)-~{N}-[(2~{S},3~{R})-4-methyl-3,4-bis(oxidanyl)-1-phenyl-pentan-2-yl]-2-[[(2~{S})-2-(2-morpholin-4-ylethanoylamino)propanoyl]amino]propanamide'>GQK</scene>, <scene name='pdbligand=MES:2-(N-MORPHOLINO)-ETHANESULFONIC+ACID'>MES</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=6hv4 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6hv4 OCA], [https://pdbe.org/6hv4 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6hv4 RCSB], [https://www.ebi.ac.uk/pdbsum/6hv4 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6hv4 ProSAT]</span></td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | |||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/PSB4_YEAST PSB4_YEAST] The proteasome degrades poly-ubiquitinated proteins in the cytoplasm and in the nucleus. It is essential for the regulated turnover of proteins and for the removal of misfolded proteins. The proteasome is a multicatalytic proteinase complex that is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. It has an ATP-dependent proteolytic activity. This subunit has a chymotrypsin-like activity. | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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</div> | </div> | ||
<div class="pdbe-citations 6hv4" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 6hv4" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Proteasome 3D structures|Proteasome 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Homo sapiens]] | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Saccharomyces cerevisiae S288C]] | ||
[[Category: Groll | [[Category: Groll M]] | ||
[[Category: Huber | [[Category: Huber EM]] | ||
Revision as of 14:40, 24 January 2024
Yeast 20S proteasome with human beta2i (1-53) in complex with ONX 0914Yeast 20S proteasome with human beta2i (1-53) in complex with ONX 0914
Structural highlights
FunctionPSB4_YEAST The proteasome degrades poly-ubiquitinated proteins in the cytoplasm and in the nucleus. It is essential for the regulated turnover of proteins and for the removal of misfolded proteins. The proteasome is a multicatalytic proteinase complex that is characterized by its ability to cleave peptides with Arg, Phe, Tyr, Leu, and Glu adjacent to the leaving group at neutral or slightly basic pH. It has an ATP-dependent proteolytic activity. This subunit has a chymotrypsin-like activity. Publication Abstract from PubMedSubunit-selective proteasome inhibitors are valuable tools to assess the biological function and medicinal relevance of individual proteasome active sites in a specific context. While inhibitors for the beta1c, beta1i, beta5c and beta5i subunits exploit structural differences in the substrate binding channels identified by X-ray crystallography, compounds selectively targeting beta2c or beta2i could not be rationally designed so far due to the high degree of structural similarity of these subunits. Here we report the development, chemical synthesis and biological screening of a compound library that led to the identification of the beta2c- and beta2i-selective compounds LU-002c (4; IC50 beta2c: 8 nM, IC50 beta2i/beta2c: 20-fold) and LU-002i (5; IC50 beta2i: 220 nM, IC50 beta2c/beta2i: 45-fold), respectively. Co-crystal structures with beta2-humanized yeast proteasomes visualize protein-ligand interactions crucial for subunit specificity. Altogether, an elaborate combination of organic syntheses, activity-based protein profiling, yeast mutagenesis and structural biology allowed us to decipher subtle but significant differences of beta2 substrate binding channels and to complete the set of subunit-selective proteasome inhibitors by identifying beta2c- and beta2i-selective compounds. Structure-based design of inhibitors selective for human proteasome beta2c or beta2i subunits.,Xin BT, Huber E, de Bruin G, Heinemeyer W, Maurits E, Espinal C, Du Y, Janssens M, Weyburne ES, Kisselev A, Florea BI, Driessen C, van der Marel GA, Groll M, Overkleeft HS J Med Chem. 2019 Jan 18. doi: 10.1021/acs.jmedchem.8b01884. PMID:30657666[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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