1m93: Difference between revisions

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==1.65 A Structure of Cleaved Viral Serpin CRMA==
==1.65 A Structure of Cleaved Viral Serpin CRMA==
<StructureSection load='1m93' size='340' side='right' caption='[[1m93]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
<StructureSection load='1m93' size='340' side='right'caption='[[1m93]], [[Resolution|resolution]] 1.65&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1m93]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Cowpox_virus Cowpox virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M93 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1M93 FirstGlance]. <br>
<table><tr><td colspan='2'>[[1m93]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Cowpox_virus Cowpox virus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1M93 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1M93 FirstGlance]. <br>
</td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene><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]] 1.65&#8491;</td></tr>
<tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1c8o|1c8o]], [[1f0c|1f0c]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=PO4:PHOSPHATE+ION'>PO4</scene></td></tr>
<tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">crmA ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=10243 Cowpox virus])</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=1m93 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m93 OCA], [https://pdbe.org/1m93 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1m93 RCSB], [https://www.ebi.ac.uk/pdbsum/1m93 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1m93 ProSAT]</span></td></tr>
<tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1m93 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1m93 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1m93 RCSB], [http://www.ebi.ac.uk/pdbsum/1m93 PDBsum]</span></td></tr>
</table>
<table>
== Function ==
[https://www.uniprot.org/uniprot/SPI2_CWPXB SPI2_CWPXB] Specific and potent inhibitor of the interleukin-1-beta converting enzyme (ICE) thereby suppressing an interleukin-1 beta response to infection. The inhibition of ICE by crmA is an example of a "cross-class" interaction, in which a serpin inhibits a non-serine proteinase. Also inhibits granzyme B.<ref>PMID:1339309</ref> <ref>PMID:8034697</ref>  
== Evolutionary Conservation ==
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
Check<jmol>
   <jmolCheckbox>
   <jmolCheckbox>
     <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/m9/1m93_consurf.spt"</scriptWhenChecked>
     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/m9/1m93_consurf.spt"</scriptWhenChecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
     <text>to colour the structure by Evolutionary Conservation</text>
     <text>to colour the structure by Evolutionary Conservation</text>
   </jmolCheckbox>
   </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/chain_selection.php?pdb_ID=2ata ConSurf].
</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=1m93 ConSurf].
<div style="clear:both"></div>
<div style="clear:both"></div>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
CrmA is an unusual viral serpin that inhibits both cysteine and serine proteinases involved in the regulation of host inflammatory and apoptosis processes. It differs from other members of the serpin superfamily by having a reactive center loop that is one residue shorter, and by its apparent inability to form SDS-stable covalent complexes with cysteine proteinases. To obtain insight into the inhibitory mechanism of crmA, we determined the crystal structure of reactive center loop-cleaved crmA to 2.9 A resolution. The structure, which is the first of a viral serpin, suggests that crmA can inhibit cysteine proteinases by a mechanism analogous to that used by other serpins against serine proteinases. However, one striking difference from other serpins, which may be significant for in vivo function, is an additional highly charged antiparallel strand for b sheet A, whose sequence and length are unique to crmA.
Crystal structure of viral serpin crmA provides insights into its mechanism of cysteine proteinase inhibition.,Simonovic M, Gettins PGW, Volz K Protein Sci. 2000 Aug;9(8):1423-7. PMID:10975564<ref>PMID:10975564</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>


==See Also==
==See Also==
*[[Serpin|Serpin]]
*[[Serpin 3D structures|Serpin 3D structures]]
== References ==
== References ==
<references/>
<references/>
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</StructureSection>
</StructureSection>
[[Category: Cowpox virus]]
[[Category: Cowpox virus]]
[[Category: Gettins, P G.W.]]
[[Category: Large Structures]]
[[Category: Simonovic, M.]]
[[Category: Gettins PGW]]
[[Category: Volz, K.]]
[[Category: Simonovic M]]
[[Category: Apoptosis]]
[[Category: Volz K]]
[[Category: Crma]]
[[Category: Ice inhibitor]]
[[Category: Serpin]]
[[Category: Viral protein]]

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