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==The structure of cathepsin S with a novel 2-arylphenoxyacetaldehyde inhibitor derived by the Substrate Activity Screening (SAS) method== | |||
<StructureSection load='2op3' size='340' side='right'caption='[[2op3]], [[Resolution|resolution]] 1.60Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[2op3]] 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=2OP3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2OP3 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]] 1.6Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PEU:2,5,8,11,14,17,20,23,26,29,32,35,38,41,44,47,50,53,56,59,62,65,68,71,74,77,80-HEPTACOSAOXADOOCTACONTAN-82-OL'>PEU</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=TF5:2-[(2,3,4-TRIFLUOROBIPHENYL-2-YL)OXY]ETHANOL'>TF5</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=2op3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2op3 OCA], [https://pdbe.org/2op3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2op3 RCSB], [https://www.ebi.ac.uk/pdbsum/2op3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2op3 ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/CATS_HUMAN CATS_HUMAN] Thiol protease. Key protease responsible for the removal of the invariant chain from MHC class II molecules. The bond-specificity of this proteinase is in part similar to the specificities of cathepsin L and cathepsin N. | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/op/2op3_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=2op3 ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
The substrate activity screening (SAS) method, a substrate-based fragment identification and optimization method for the development of enzyme inhibitors, was previously applied to cathepsin S to obtain a novel (2-arylphenoxy)acetaldehyde inhibitor, 2, with a 0.49 microM Ki value (Wood, W. J. L.; Patterson, A. W.; Tsuruoka, H.; Jain, R. K.; Ellman, J. A. J. Am. Chem. Soc. 2005, 127, 15521-15527). In this paper we disclose the X-ray structure of a complex between cathepsin S and inhibitor 2 which reveals an unprecedented binding mode. On the basis of this structure, additional 2-biaryloxy substrates with greatly increased cleavage efficiency were designed. Conversion of the optimized substrates to the corresponding aldehyde inhibitors yielded a low molecular weight (304 Daltons) and potent (9.6 nM) cathepsin S inhibitor that showed from 100- to >1000-fold selectivity relative to cathepsins B, L, and K. | |||
Characterization and optimization of selective, nonpeptidic inhibitors of cathepsin S with an unprecedented binding mode.,Inagaki H, Tsuruoka H, Hornsby M, Lesley SA, Spraggon G, Ellman JA J Med Chem. 2007 May 31;50(11):2693-9. Epub 2007 May 1. PMID:17469812<ref>PMID:17469812</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2op3" style="background-color:#fffaf0;"></div> | |||
== | ==See Also== | ||
*[[Cathepsin 3D structures|Cathepsin 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Ellman | [[Category: Ellman JA]] | ||
[[Category: Hornsby | [[Category: Hornsby M]] | ||
[[Category: Inagaki | [[Category: Inagaki H]] | ||
[[Category: Lesley | [[Category: Lesley SA]] | ||
[[Category: Spraggon | [[Category: Spraggon G]] | ||
[[Category: Tsuruoka | [[Category: Tsuruoka H]] | ||
Latest revision as of 12:46, 25 December 2024
The structure of cathepsin S with a novel 2-arylphenoxyacetaldehyde inhibitor derived by the Substrate Activity Screening (SAS) methodThe structure of cathepsin S with a novel 2-arylphenoxyacetaldehyde inhibitor derived by the Substrate Activity Screening (SAS) method
Structural highlights
FunctionCATS_HUMAN Thiol protease. Key protease responsible for the removal of the invariant chain from MHC class II molecules. The bond-specificity of this proteinase is in part similar to the specificities of cathepsin L and cathepsin N. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe substrate activity screening (SAS) method, a substrate-based fragment identification and optimization method for the development of enzyme inhibitors, was previously applied to cathepsin S to obtain a novel (2-arylphenoxy)acetaldehyde inhibitor, 2, with a 0.49 microM Ki value (Wood, W. J. L.; Patterson, A. W.; Tsuruoka, H.; Jain, R. K.; Ellman, J. A. J. Am. Chem. Soc. 2005, 127, 15521-15527). In this paper we disclose the X-ray structure of a complex between cathepsin S and inhibitor 2 which reveals an unprecedented binding mode. On the basis of this structure, additional 2-biaryloxy substrates with greatly increased cleavage efficiency were designed. Conversion of the optimized substrates to the corresponding aldehyde inhibitors yielded a low molecular weight (304 Daltons) and potent (9.6 nM) cathepsin S inhibitor that showed from 100- to >1000-fold selectivity relative to cathepsins B, L, and K. Characterization and optimization of selective, nonpeptidic inhibitors of cathepsin S with an unprecedented binding mode.,Inagaki H, Tsuruoka H, Hornsby M, Lesley SA, Spraggon G, Ellman JA J Med Chem. 2007 May 31;50(11):2693-9. Epub 2007 May 1. PMID:17469812[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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