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==Crystal structure of human caspase-1 in complex with 4-oxo-3-[2-(5-{[4-(quinoxalin-2-ylamino)-benzoylamino]-methyl}-thiophen-2-yl)-acetylamino]-pentanoic acid== | |||
<StructureSection load='1rwm' size='340' side='right'caption='[[1rwm]], [[Resolution|resolution]] 2.70Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1rwm]] 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=1RWM OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RWM 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]] 2.7Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=Q2Y:4-OXO-3-[2-(5-{[4-(QUINOXALIN-2-YLAMINO)-BENZOYLAMINO]-METHYL}-THIOPHEN-2-YL)-ACETYLAMINO]-PENTANOIC+ACID'>Q2Y</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=1rwm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rwm OCA], [https://pdbe.org/1rwm PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rwm RCSB], [https://www.ebi.ac.uk/pdbsum/1rwm PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rwm ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/CASP1_HUMAN CASP1_HUMAN] Thiol protease that cleaves IL-1 beta between an Asp and an Ala, releasing the mature cytokine which is involved in a variety of inflammatory processes. Important for defense against pathogens. Cleaves and activates sterol regulatory element binding proteins (SREBPs). Can also promote apoptosis.<ref>PMID:7876192</ref> <ref>PMID:15498465</ref> | |||
== 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/rw/1rwm_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=1rwm ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Caspase-1 is a key endopeptidase responsible for the post-translational processing of the IL-1beta and IL-18 cytokines and small-molecule inhibitors that modulate the activity of this enzyme are predicted to be important therapeutic treatments for many inflammatory diseases. A fragment-assembly approach, accompanied by structural analysis, was employed to generate caspase-1 inhibitors. With the aid of Tethering with extenders (small molecules that bind to the active-site cysteine and contain a free thiol), two novel fragments that bound to the active site and made a disulfide bond with the extender were identified by mass spectrometry. Direct linking of each fragment to the extender generated submicromolar reversible inhibitors that significantly reduced secretion of IL-1beta but not IL-6 from human peripheral blood mononuclear cells. Thus, Tethering with extenders facilitated rapid identification and synthesis of caspase-1 inhibitors with cell-based activity and subsequent structural analyses provided insights into the enzyme's ability to accommodate different inhibitor-binding modes in the active site. | |||
Structural analysis of caspase-1 inhibitors derived from Tethering.,O'Brien T, Fahr BT, Sopko MM, Lam JW, Waal ND, Raimundo BC, Purkey HE, Pham P, Romanowski MJ Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 May 1;61(Pt, 5):451-8. Epub 2005 Apr 9. PMID:16511067<ref>PMID:16511067</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1rwm" style="background-color:#fffaf0;"></div> | |||
== | ==See Also== | ||
*[[Caspase 3D structures|Caspase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: Fahr BT]] | ||
[[Category: | [[Category: O'Brien T]] | ||
[[Category: Romanowski | [[Category: Romanowski MJ]] | ||
[[Category: Waal | [[Category: Waal ND]] | ||
Latest revision as of 10:21, 30 October 2024
Crystal structure of human caspase-1 in complex with 4-oxo-3-[2-(5-{[4-(quinoxalin-2-ylamino)-benzoylamino]-methyl}-thiophen-2-yl)-acetylamino]-pentanoic acidCrystal structure of human caspase-1 in complex with 4-oxo-3-[2-(5-{[4-(quinoxalin-2-ylamino)-benzoylamino]-methyl}-thiophen-2-yl)-acetylamino]-pentanoic acid
Structural highlights
FunctionCASP1_HUMAN Thiol protease that cleaves IL-1 beta between an Asp and an Ala, releasing the mature cytokine which is involved in a variety of inflammatory processes. Important for defense against pathogens. Cleaves and activates sterol regulatory element binding proteins (SREBPs). Can also promote apoptosis.[1] [2] 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 PubMedCaspase-1 is a key endopeptidase responsible for the post-translational processing of the IL-1beta and IL-18 cytokines and small-molecule inhibitors that modulate the activity of this enzyme are predicted to be important therapeutic treatments for many inflammatory diseases. A fragment-assembly approach, accompanied by structural analysis, was employed to generate caspase-1 inhibitors. With the aid of Tethering with extenders (small molecules that bind to the active-site cysteine and contain a free thiol), two novel fragments that bound to the active site and made a disulfide bond with the extender were identified by mass spectrometry. Direct linking of each fragment to the extender generated submicromolar reversible inhibitors that significantly reduced secretion of IL-1beta but not IL-6 from human peripheral blood mononuclear cells. Thus, Tethering with extenders facilitated rapid identification and synthesis of caspase-1 inhibitors with cell-based activity and subsequent structural analyses provided insights into the enzyme's ability to accommodate different inhibitor-binding modes in the active site. Structural analysis of caspase-1 inhibitors derived from Tethering.,O'Brien T, Fahr BT, Sopko MM, Lam JW, Waal ND, Raimundo BC, Purkey HE, Pham P, Romanowski MJ Acta Crystallogr Sect F Struct Biol Cryst Commun. 2005 May 1;61(Pt, 5):451-8. Epub 2005 Apr 9. PMID:16511067[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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