2ary: Difference between revisions
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< | ==Catalytic domain of Human Calpain-1== | ||
<StructureSection load='2ary' size='340' side='right'caption='[[2ary]], [[Resolution|resolution]] 2.40Å' scene=''> | |||
You may | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2ary]] 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=2ARY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2ARY 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]] 2.4Å</td></tr> | |||
-- | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=BME:BETA-MERCAPTOETHANOL'>BME</scene>, <scene name='pdbligand=CA:CALCIUM+ION'>CA</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=2ary FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2ary OCA], [https://pdbe.org/2ary PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2ary RCSB], [https://www.ebi.ac.uk/pdbsum/2ary PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2ary ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/CAN1_HUMAN CAN1_HUMAN] Calcium-regulated non-lysosomal thiol-protease which catalyze limited proteolysis of substrates involved in cytoskeletal remodeling and signal transduction. | |||
== 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/ar/2ary_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.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=2ary ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Calpains are calcium activated cysteine proteases found throughout the animal, plant, and fungi kingdoms; 14 isoforms have been described in the human genome. Calpains have been implicated in multiple models of human disease; for instance, calpain 1 is activated in the brains of individuals with Alzheimer's disease, and the digestive tract specific calpain 9 is down-regulated in gastric cancer cell lines. We have solved the structures of human calpain 1 and calpain 9 protease cores using crystallographic methods; both structures have clear implications for the function of non-catalytic domains of full-length calpains in the calcium-mediated activation of the enzyme. The structure of minicalpain 1 is similar to previously solved structures of the protease core. Auto-inhibition in this system is most likely through rearrangements of a central helical/loop region near the active site cysteine, which occlude the substrate binding site. However, the structure of minicalpain 9 indicates that auto-inhibition in this enzyme is mediated through large intra-domain movements that misalign the catalytic triad. This disruption is reminiscent of the full-length inactive calpain conformation. The structures of the highly conserved, ubiquitously expressed human calpain 1 and the more tissue specific human calpain 9 indicate that although there are high levels of sequence conservation throughout the calpain family, isolated structures of family members are insufficient to explain the molecular mechanism of activation for this group of proteins. | |||
The crystal structures of human calpains 1 and 9 imply diverse mechanisms of action and auto-inhibition.,Davis TL, Walker JR, Finerty PJ Jr, Mackenzie F, Newman EM, Dhe-Paganon S J Mol Biol. 2007 Feb 9;366(1):216-29. Epub 2006 Nov 14. PMID:17157313<ref>PMID:17157313</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 2ary" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[Calpain 3D structures|Calpain 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | |||
== | |||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Arrowsmith | [[Category: Arrowsmith C]] | ||
[[Category: Bochkarev | [[Category: Bochkarev A]] | ||
[[Category: Davis | [[Category: Davis T]] | ||
[[Category: Dhe-Paganon | [[Category: Dhe-Paganon S]] | ||
[[Category: Edwards | [[Category: Edwards A]] | ||
[[Category: Lunin | [[Category: Lunin V]] | ||
[[Category: Mackenzie | [[Category: Mackenzie F]] | ||
[[Category: Newman | [[Category: Newman EM]] | ||
[[Category: Sundstrom M]] | |||
[[Category: Sundstrom | [[Category: Walker JR]] | ||
[[Category: Walker | [[Category: Weigelt J]] | ||
[[Category: Weigelt | |||
Latest revision as of 10:28, 23 August 2023
Catalytic domain of Human Calpain-1Catalytic domain of Human Calpain-1
Structural highlights
FunctionCAN1_HUMAN Calcium-regulated non-lysosomal thiol-protease which catalyze limited proteolysis of substrates involved in cytoskeletal remodeling and signal transduction. 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 PubMedCalpains are calcium activated cysteine proteases found throughout the animal, plant, and fungi kingdoms; 14 isoforms have been described in the human genome. Calpains have been implicated in multiple models of human disease; for instance, calpain 1 is activated in the brains of individuals with Alzheimer's disease, and the digestive tract specific calpain 9 is down-regulated in gastric cancer cell lines. We have solved the structures of human calpain 1 and calpain 9 protease cores using crystallographic methods; both structures have clear implications for the function of non-catalytic domains of full-length calpains in the calcium-mediated activation of the enzyme. The structure of minicalpain 1 is similar to previously solved structures of the protease core. Auto-inhibition in this system is most likely through rearrangements of a central helical/loop region near the active site cysteine, which occlude the substrate binding site. However, the structure of minicalpain 9 indicates that auto-inhibition in this enzyme is mediated through large intra-domain movements that misalign the catalytic triad. This disruption is reminiscent of the full-length inactive calpain conformation. The structures of the highly conserved, ubiquitously expressed human calpain 1 and the more tissue specific human calpain 9 indicate that although there are high levels of sequence conservation throughout the calpain family, isolated structures of family members are insufficient to explain the molecular mechanism of activation for this group of proteins. The crystal structures of human calpains 1 and 9 imply diverse mechanisms of action and auto-inhibition.,Davis TL, Walker JR, Finerty PJ Jr, Mackenzie F, Newman EM, Dhe-Paganon S J Mol Biol. 2007 Feb 9;366(1):216-29. Epub 2006 Nov 14. PMID:17157313[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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