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| <StructureSection load='7d1o' size='340' side='right'caption='[[7d1o]], [[Resolution|resolution]] 1.78Å' scene=''> | | <StructureSection load='7d1o' size='340' side='right'caption='[[7d1o]], [[Resolution|resolution]] 1.78Å' scene=''> |
| == Structural highlights == | | == Structural highlights == |
| <table><tr><td colspan='2'>[[7d1o]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/2019-ncov 2019-ncov]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7D1O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7D1O FirstGlance]. <br> | | <table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=7D1O OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=7D1O FirstGlance]. <br> |
| </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NNA:(1R,2S,5S)-3-[N-({1-[(tert-butylsulfonyl)methyl]cyclohexyl}carbamoyl)-3-methyl-L-valyl]-N-{(1S)-1-[(1R)-2-(cyclopropylamino)-1-hydroxy-2-oxoethyl]pentyl}-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide'>NNA</scene></td></tr> | | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.78Å</td></tr> |
| <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/SARS_coronavirus_main_proteinase SARS coronavirus main proteinase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.4.22.69 3.4.22.69] </span></td></tr>
| | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NNA:(1R,2S,5S)-3-[N-({1-[(tert-butylsulfonyl)methyl]cyclohexyl}carbamoyl)-3-methyl-L-valyl]-N-{(1S)-1-[(1R)-2-(cyclopropyla+mino)-1-hydroxy-2-oxoethyl]pentyl}-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxamide'>NNA</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=7d1o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7d1o OCA], [https://pdbe.org/7d1o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7d1o RCSB], [https://www.ebi.ac.uk/pdbsum/7d1o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7d1o ProSAT]</span></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=7d1o FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=7d1o OCA], [https://pdbe.org/7d1o PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=7d1o RCSB], [https://www.ebi.ac.uk/pdbsum/7d1o PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=7d1o ProSAT]</span></td></tr> |
| </table> | | </table> |
| == Function ==
| |
| [[https://www.uniprot.org/uniprot/R1A_SARS2 R1A_SARS2]] Multifunctional protein involved in the transcription and replication of viral RNAs. Contains the proteinases responsible for the cleavages of the polyprotein.[UniProtKB:P0C6X7] Inhibits host translation by interacting with the 40S ribosomal subunit. The nsp1-40S ribosome complex further induces an endonucleolytic cleavage near the 5'UTR of host mRNAs, targeting them for degradation. Viral mRNAs are not susceptible to nsp1-mediated endonucleolytic RNA cleavage thanks to the presence of a 5'-end leader sequence and are therefore protected from degradation. By suppressing host gene expression, nsp1 facilitates efficient viral gene expression in infected cells and evasion from host immune response.[UniProtKB:P0C6X7] May play a role in the modulation of host cell survival signaling pathway by interacting with host PHB and PHB2. Indeed, these two proteins play a role in maintaining the functional integrity of the mitochondria and protecting cells from various stresses.[UniProtKB:P0C6X7] Responsible for the cleavages located at the N-terminus of the 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. Participates together with nsp4 in the assembly of virally-induced cytoplasmic double-membrane vesicles necessary for viral replication. Antagonizes innate immune induction of type I interferon by blocking the phosphorylation, dimerization and subsequent nuclear translocation of host IRF3. Prevents also host NF-kappa-B signaling.[UniProtKB:P0C6X7] Participates in the assembly of virally-induced cytoplasmic double-membrane vesicles necessary for viral replication.[UniProtKB:P0C6X7] Cleaves the C-terminus of replicase polyprotein at 11 sites. Recognizes substrates containing the core sequence [ILMVF]-Q-|-[SGACN]. Also able to bind an ADP-ribose-1''-phosphate (ADRP).[UniProtKB:P0C6X7] Plays a role in the initial induction of autophagosomes from host reticulum endoplasmic. Later, limits the expansion of these phagosomes that are no longer able to deliver viral components to lysosomes.[UniProtKB:P0C6X7] Forms a hexadecamer with nsp8 (8 subunits of each) that may participate in viral replication by acting as a primase. Alternatively, may synthesize substantially longer products than oligonucleotide primers.[UniProtKB:P0C6X7] Forms a hexadecamer with nsp7 (8 subunits of each) that may participate in viral replication by acting as a primase. Alternatively, may synthesize substantially longer products than oligonucleotide primers.[UniProtKB:P0C6X7] May participate in viral replication by acting as a ssRNA-binding protein.[UniProtKB:P0C6X7] Plays a pivotal role in viral transcription by stimulating both nsp14 3'-5' exoribonuclease and nsp16 2'-O-methyltransferase activities. Therefore plays an essential role in viral mRNAs cap methylation.[UniProtKB:P0C6X7]
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| __TOC__ | | __TOC__ |
| </StructureSection> | | </StructureSection> |
| [[Category: 2019-ncov]]
| |
| [[Category: Large Structures]] | | [[Category: Large Structures]] |
| [[Category: SARS coronavirus main proteinase]]
| | [[Category: Feng Y]] |
| [[Category: Feng, Y]] | | [[Category: Fu LF]] |
| [[Category: Fu, L F]] | | [[Category: Qi JX]] |
| [[Category: Qi, J X]] | |
| [[Category: Main protease]]
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| [[Category: Narlaprevir]]
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| [[Category: Sars-cov-2]]
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| [[Category: Viral protein]]
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