1q2w: Difference between revisions
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==X-Ray Crystal Structure of the SARS Coronavirus Main Protease== | ==X-Ray Crystal Structure of the SARS Coronavirus Main Protease== | ||
<StructureSection load='1q2w' size='340' side='right' caption='[[1q2w]], [[Resolution|resolution]] 1.86Å' scene=''> | <StructureSection load='1q2w' size='340' side='right'caption='[[1q2w]], [[Resolution|resolution]] 1.86Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1q2w]] is a 2 chain structure | <table><tr><td colspan='2'>[[1q2w]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Q2W OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1Q2W FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MPD:(4S)-2-METHYL-2,4-PENTANEDIOL'>MPD</scene></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1q2w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q2w OCA], [http://pdbe.org/1q2w PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1q2w RCSB], [http://www.ebi.ac.uk/pdbsum/1q2w PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1q2w ProSAT]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1q2w FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1q2w OCA], [http://pdbe.org/1q2w PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1q2w RCSB], [http://www.ebi.ac.uk/pdbsum/1q2w PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1q2w ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[http://www.uniprot.org/uniprot/ | [[http://www.uniprot.org/uniprot/R1A_CVHSA R1A_CVHSA]] The papain-like proteinase (PL-PRO) is responsible for the cleavages located at the N-terminus of replicase polyprotein. In addition, PL-PRO possesses a deubiquitinating/deISGylating activity and processes both 'Lys-48'- and 'Lys-63'-linked polyubiquitin chains from cellular substrates. Antagonizes innate immune induction of type I interferon by blocking the phosphorylation, dimerization and subsequent nuclear translocation of host IRF-3.<ref>PMID:17024178</ref> <ref>PMID:17692280</ref> <ref>PMID:19369340</ref> The main proteinase 3CL-PRO is responsible for the majority of cleavages as it cleaves the C-terminus of replicase polyprotein at 11 sites. Recognizes substrates containing the core sequence [ILMVF]-Q-|-[SGACN]. Inhibited by the substrate-analog Cbz-Val-Asn-Ser-Thr-Leu-Gln-CMK (By similarity). Also contains an ADP-ribose-1''-phosphate (ADRP)-binding function.<ref>PMID:17024178</ref> <ref>PMID:17692280</ref> <ref>PMID:19369340</ref> Nsp7-nsp8 hexadecamer may possibly confer processivity to the polymerase, maybe by binding to dsRNA or by producing primers utilized by the latter.<ref>PMID:17024178</ref> <ref>PMID:17692280</ref> <ref>PMID:19369340</ref> Nsp9 is a ssRNA-binding protein.<ref>PMID:17024178</ref> <ref>PMID:17692280</ref> <ref>PMID:19369340</ref> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: Bonanno, J B]] | [[Category: Bonanno, J B]] | ||
[[Category: Burley, S K]] | [[Category: Burley, S K]] | ||
