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'''Unreleased structure'''


The entry 5tl6 is ON HOLD
==Crystal structure of SARS-CoV papain-like protease in complex with the C-terminal domain of human ISG15==
<StructureSection load='5tl6' size='340' side='right'caption='[[5tl6]], [[Resolution|resolution]] 2.62&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[5tl6]] is a 4 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens] and [https://en.wikipedia.org/wiki/Severe_acute_respiratory_syndrome-related_coronavirus Severe acute respiratory syndrome-related coronavirus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=5TL6 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=5TL6 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]] 2.618&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AYE:PROP-2-EN-1-AMINE'>AYE</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</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=5tl6 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=5tl6 OCA], [https://pdbe.org/5tl6 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=5tl6 RCSB], [https://www.ebi.ac.uk/pdbsum/5tl6 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=5tl6 ProSAT]</span></td></tr>
</table>
== Function ==
[https://www.uniprot.org/uniprot/R1AB_SARS R1AB_SARS] Multifunctional protein involved in the transcription and replication of viral RNAs. Contains the proteinases responsible for the cleavages of the polyprotein.  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 (PubMed:23035226). May disrupt nuclear pore function by binding and displacing host NUP93 (PubMed:30943371).<ref>PMID:23035226</ref> <ref>PMID:30943371</ref>  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.<ref>PMID:19640993</ref>  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 (PubMed:17692280). Plays a role in host membrane rearrangement that leads to creation of cytoplasmic double-membrane vesicles (DMV) necessary for viral replication. Nsp3, nsp4 and nsp6 together are sufficient to form DMV (PubMed:24410069). Antagonizes innate immune induction of type I interferon by blocking the phosphorylation, dimerization and subsequent nuclear translocation of host IRF3 (PubMed:19369340, PubMed:24622840). Prevents also host NF-kappa-B signaling.<ref>PMID:16271890</ref> <ref>PMID:17692280</ref> <ref>PMID:19369340</ref> <ref>PMID:24622840</ref> <ref>PMID:24410069</ref>  Plays a role in host membrane rearrangement that leads to creation of cytoplasmic double-membrane vesicles (DMV) necessary for viral replication. Alone appears incapable to induce membrane curvature, but together with nsp3 is able to induce paired membranes. Nsp3, nsp4 and nsp6 together are sufficient to form DMV.<ref>PMID:23943763</ref> <ref>PMID:24410069</ref>  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). May cleave host ATP6V1G1 thereby modifying host vacuoles intracellular pH.[PROSITE-ProRule:PRU00772]<ref>PMID:16226257</ref>  Plays a role in host membrane rearrangement that leads to creation of cytoplasmic double-membrane vesicles (DMV) necessary for viral replication. Nsp3, nsp4 and nsp6 together are sufficient to form DMV (PubMed:24410069). 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 (PubMed:24991833).<ref>PMID:24991833</ref> <ref>PMID:24410069</ref>  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.<ref>PMID:22039154</ref>  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.<ref>PMID:22039154</ref>  May participate in viral replication by acting as a ssRNA-binding protein.<ref>PMID:19153232</ref>  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.<ref>PMID:22635272</ref>  Responsible for replication and transcription of the viral RNA genome.<ref>PMID:22791111</ref>  Multi-functional protein with a zinc-binding domain in N-terminus displaying RNA and DNA duplex-unwinding activities with 5' to 3' polarity. Activity of helicase is dependent on magnesium.<ref>PMID:12917423</ref> <ref>PMID:22615777</ref>  Enzyme possessing two different activities: an exoribonuclease activity acting on both ssRNA and dsRNA in a 3' to 5' direction and a N7-guanine methyltransferase activity (PubMed:16549795, PubMed:20421945, PubMed:22635272). Acts as a proofreading exoribonuclease for RNA replication, thereby lowering The sensitivity of the virus to RNA mutagens (PubMed:23966862, PubMed:29511076, PubMed:21593585).<ref>PMID:16549795</ref> <ref>PMID:20421945</ref> <ref>PMID:21593585</ref> <ref>PMID:22635272</ref> <ref>PMID:23966862</ref> <ref>PMID:29511076</ref>  Mn(2+)-dependent, uridylate-specific enzyme, which leaves 2'-3'-cyclic phosphates 5' to the cleaved bond.  Methyltransferase that mediates mRNA cap 2'-O-ribose methylation to the 5'-cap structure of viral mRNAs. N7-methyl guanosine cap is a prerequisite for binding of nsp16. Therefore plays an essential role in viral mRNAs cap methylation which is essential to evade immune system.<ref>PMID:18417574</ref> <ref>PMID:20421945</ref>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
Severe Acute and Middle East Respiratory syndrome coronaviruses (SARS-CoV and MERS-CoV) encode multifunctional papain-like proteases (PLPs) that have the ability to process the viral polyprotein to facilitate RNA replication as well as antagonize the host innate-immune response. The latter function involves reversing post-translational modification of cellular proteins conjugated with either ubiquitin (Ub) or Ub-like interferon stimulated gene product 15 (ISG15). Ubiquitin is known to be highly conserved among eukaryotes but surprisingly ISG15 is highly divergent among animals. The ramifications of this sequence divergence to recognition of ISG15 by coronaviral papain-like protease at the structural and biochemical levels are poorly understood. Therefore, the activity of PLPs from SARS-CoV, MERS-CoV and mouse hepatitis virus (MHV) was evaluated against seven ISG15s originating from an assortment of animal species susceptible, and not, to certain coronavirus infections. Excitingly, our kinetic, thermodynamic and structural analysis revealed an array of different preferences among PLPs. Included in these studies is the first insight into a coronoavirus PLP's interface with ISG15 via SARS-CoV PLP in complex with the principle binding domain of human and mouse ISG15s. The first X-ray structure of the full-length mouse ISG15 protein is also reported and highlights a unique, twisted-hinge region of ISG15 that is not conserved in human ISG15 suggesting a potential role in differential recognition. Taken together, this new information provides a structural and biochemical understanding of the distinct specificities amongst coronavirus PLPs observed and addresses a critical gap of how PLPs can interact with ISG15s from a wide variety of species.


Authors:  
Structural insights into the interaction of coronavirus papain-like proteases and interferon-stimulated gene product 15 from different species.,Daczkowski CM, Dzimianski JV, Clasman JR, Goodwin O, Mesecar AD, Pegan SD J Mol Biol. 2017 Apr 21. pii: S0022-2836(17)30187-0. doi:, 10.1016/j.jmb.2017.04.011. PMID:28438633<ref>PMID:28438633</ref>


Description:  
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
[[Category: Unreleased Structures]]
</div>
<div class="pdbe-citations 5tl6" style="background-color:#fffaf0;"></div>
 
==See Also==
*[[Virus protease 3D structures|Virus protease 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Homo sapiens]]
[[Category: Large Structures]]
[[Category: Severe acute respiratory syndrome-related coronavirus]]
[[Category: Daczkowski CM]]
[[Category: Dzimianski JV]]
[[Category: Pegan SD]]

Latest revision as of 16:04, 4 October 2023

Crystal structure of SARS-CoV papain-like protease in complex with the C-terminal domain of human ISG15Crystal structure of SARS-CoV papain-like protease in complex with the C-terminal domain of human ISG15

Structural highlights

5tl6 is a 4 chain structure with sequence from Homo sapiens and Severe acute respiratory syndrome-related coronavirus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 2.618Å
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

R1AB_SARS Multifunctional protein involved in the transcription and replication of viral RNAs. Contains the proteinases responsible for the cleavages of the polyprotein. 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 (PubMed:23035226). May disrupt nuclear pore function by binding and displacing host NUP93 (PubMed:30943371).[1] [2] 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.[3] 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 (PubMed:17692280). Plays a role in host membrane rearrangement that leads to creation of cytoplasmic double-membrane vesicles (DMV) necessary for viral replication. Nsp3, nsp4 and nsp6 together are sufficient to form DMV (PubMed:24410069). Antagonizes innate immune induction of type I interferon by blocking the phosphorylation, dimerization and subsequent nuclear translocation of host IRF3 (PubMed:19369340, PubMed:24622840). Prevents also host NF-kappa-B signaling.[4] [5] [6] [7] [8] Plays a role in host membrane rearrangement that leads to creation of cytoplasmic double-membrane vesicles (DMV) necessary for viral replication. Alone appears incapable to induce membrane curvature, but together with nsp3 is able to induce paired membranes. Nsp3, nsp4 and nsp6 together are sufficient to form DMV.[9] [10] 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). May cleave host ATP6V1G1 thereby modifying host vacuoles intracellular pH.[PROSITE-ProRule:PRU00772][11] Plays a role in host membrane rearrangement that leads to creation of cytoplasmic double-membrane vesicles (DMV) necessary for viral replication. Nsp3, nsp4 and nsp6 together are sufficient to form DMV (PubMed:24410069). 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 (PubMed:24991833).[12] [13] 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.[14] 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.[15] May participate in viral replication by acting as a ssRNA-binding protein.[16] 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.[17] Responsible for replication and transcription of the viral RNA genome.[18] Multi-functional protein with a zinc-binding domain in N-terminus displaying RNA and DNA duplex-unwinding activities with 5' to 3' polarity. Activity of helicase is dependent on magnesium.[19] [20] Enzyme possessing two different activities: an exoribonuclease activity acting on both ssRNA and dsRNA in a 3' to 5' direction and a N7-guanine methyltransferase activity (PubMed:16549795, PubMed:20421945, PubMed:22635272). Acts as a proofreading exoribonuclease for RNA replication, thereby lowering The sensitivity of the virus to RNA mutagens (PubMed:23966862, PubMed:29511076, PubMed:21593585).[21] [22] [23] [24] [25] [26] Mn(2+)-dependent, uridylate-specific enzyme, which leaves 2'-3'-cyclic phosphates 5' to the cleaved bond. Methyltransferase that mediates mRNA cap 2'-O-ribose methylation to the 5'-cap structure of viral mRNAs. N7-methyl guanosine cap is a prerequisite for binding of nsp16. Therefore plays an essential role in viral mRNAs cap methylation which is essential to evade immune system.[27] [28]

Publication Abstract from PubMed

Severe Acute and Middle East Respiratory syndrome coronaviruses (SARS-CoV and MERS-CoV) encode multifunctional papain-like proteases (PLPs) that have the ability to process the viral polyprotein to facilitate RNA replication as well as antagonize the host innate-immune response. The latter function involves reversing post-translational modification of cellular proteins conjugated with either ubiquitin (Ub) or Ub-like interferon stimulated gene product 15 (ISG15). Ubiquitin is known to be highly conserved among eukaryotes but surprisingly ISG15 is highly divergent among animals. The ramifications of this sequence divergence to recognition of ISG15 by coronaviral papain-like protease at the structural and biochemical levels are poorly understood. Therefore, the activity of PLPs from SARS-CoV, MERS-CoV and mouse hepatitis virus (MHV) was evaluated against seven ISG15s originating from an assortment of animal species susceptible, and not, to certain coronavirus infections. Excitingly, our kinetic, thermodynamic and structural analysis revealed an array of different preferences among PLPs. Included in these studies is the first insight into a coronoavirus PLP's interface with ISG15 via SARS-CoV PLP in complex with the principle binding domain of human and mouse ISG15s. The first X-ray structure of the full-length mouse ISG15 protein is also reported and highlights a unique, twisted-hinge region of ISG15 that is not conserved in human ISG15 suggesting a potential role in differential recognition. Taken together, this new information provides a structural and biochemical understanding of the distinct specificities amongst coronavirus PLPs observed and addresses a critical gap of how PLPs can interact with ISG15s from a wide variety of species.

Structural insights into the interaction of coronavirus papain-like proteases and interferon-stimulated gene product 15 from different species.,Daczkowski CM, Dzimianski JV, Clasman JR, Goodwin O, Mesecar AD, Pegan SD J Mol Biol. 2017 Apr 21. pii: S0022-2836(17)30187-0. doi:, 10.1016/j.jmb.2017.04.011. PMID:28438633[29]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. ↑ Lokugamage KG, Narayanan K, Huang C, Makino S. Severe acute respiratory syndrome coronavirus protein nsp1 is a novel eukaryotic translation inhibitor that represses multiple steps of translation initiation. J Virol. 2012 Dec;86(24):13598-608. doi: 10.1128/JVI.01958-12. Epub 2012 Oct 3. PMID:23035226 doi:http://dx.doi.org/10.1128/JVI.01958-12
  2. ↑ Gomez GN, Abrar F, Dodhia MP, Gonzalez FG, Nag A. SARS coronavirus protein nsp1 disrupts localization of Nup93 from the nuclear pore complex. Biochem Cell Biol. 2019 Dec;97(6):758-766. doi: 10.1139/bcb-2018-0394. Epub 2019 , Apr 3. PMID:30943371 doi:http://dx.doi.org/10.1139/bcb-2018-0394
  3. ↑ Cornillez-Ty CT, Liao L, Yates JR 3rd, Kuhn P, Buchmeier MJ. Severe acute respiratory syndrome coronavirus nonstructural protein 2 interacts with a host protein complex involved in mitochondrial biogenesis and intracellular signaling. J Virol. 2009 Oct;83(19):10314-8. Epub 2009 Jul 29. PMID:19640993 doi:http://dx.doi.org/JVI.00842-09
  4. ↑ Saikatendu KS, Joseph JS, Subramanian V, Clayton T, Griffith M, Moy K, Velasquez J, Neuman BW, Buchmeier MJ, Stevens RC, Kuhn P. Structural basis of severe acute respiratory syndrome coronavirus ADP-ribose-1-phosphate dephosphorylation by a conserved domain of nsP3. Structure. 2005 Nov;13(11):1665-75. PMID:16271890 doi:10.1016/j.str.2005.07.022
  5. ↑ Lindner HA, Lytvyn V, Qi H, Lachance P, Ziomek E, Menard R. Selectivity in ISG15 and ubiquitin recognition by the SARS coronavirus papain-like protease. Arch Biochem Biophys. 2007 Oct 1;466(1):8-14. Epub 2007 Jul 14. PMID:17692280 doi:10.1016/j.abb.2007.07.006
  6. ↑ Frieman M, Ratia K, Johnston RE, Mesecar AD, Baric RS. Severe acute respiratory syndrome coronavirus papain-like protease ubiquitin-like domain and catalytic domain regulate antagonism of IRF3 and NF-kappaB signaling. J Virol. 2009 Jul;83(13):6689-705. doi: 10.1128/JVI.02220-08. Epub 2009 Apr 15. PMID:19369340 doi:10.1128/JVI.02220-08
  7. ↑ Chen X, Yang X, Zheng Y, Yang Y, Xing Y, Chen Z. SARS coronavirus papain-like protease inhibits the type I interferon signaling pathway through interaction with the STING-TRAF3-TBK1 complex. Protein Cell. 2014 May;5(5):369-81. doi: 10.1007/s13238-014-0026-3. Epub 2014 Mar, 14. PMID:24622840 doi:http://dx.doi.org/10.1007/s13238-014-0026-3
  8. ↑ Angelini MM, Neuman BW, Buchmeier MJ. Untangling membrane rearrangement in the nidovirales. DNA Cell Biol. 2014 Mar;33(3):122-7. doi: 10.1089/dna.2013.2304. Epub 2014 Jan, 10. PMID:24410069 doi:http://dx.doi.org/10.1089/dna.2013.2304
  9. ↑ Angelini MM, Akhlaghpour M, Neuman BW, Buchmeier MJ. Severe acute respiratory syndrome coronavirus nonstructural proteins 3, 4, and 6 induce double-membrane vesicles. mBio. 2013 Aug 13;4(4). pii: mBio.00524-13. doi: 10.1128/mBio.00524-13. PMID:23943763 doi:http://dx.doi.org/10.1128/mBio.00524-13
  10. ↑ Angelini MM, Neuman BW, Buchmeier MJ. Untangling membrane rearrangement in the nidovirales. DNA Cell Biol. 2014 Mar;33(3):122-7. doi: 10.1089/dna.2013.2304. Epub 2014 Jan, 10. PMID:24410069 doi:http://dx.doi.org/10.1089/dna.2013.2304
  11. ↑ Lin CW, Tsai FJ, Wan L, Lai CC, Lin KH, Hsieh TH, Shiu SY, Li JY. Binding interaction of SARS coronavirus 3CL(pro) protease with vacuolar-H+ ATPase G1 subunit. FEBS Lett. 2005 Nov 7;579(27):6089-94. doi: 10.1016/j.febslet.2005.09.075. Epub, 2005 Oct 6. PMID:16226257 doi:http://dx.doi.org/10.1016/j.febslet.2005.09.075
  12. ↑ Cottam EM, Whelband MC, Wileman T. Coronavirus NSP6 restricts autophagosome expansion. Autophagy. 2014 Aug;10(8):1426-41. doi: 10.4161/auto.29309. Epub 2014 Jun 11. PMID:24991833 doi:http://dx.doi.org/10.4161/auto.29309
  13. ↑ Angelini MM, Neuman BW, Buchmeier MJ. Untangling membrane rearrangement in the nidovirales. DNA Cell Biol. 2014 Mar;33(3):122-7. doi: 10.1089/dna.2013.2304. Epub 2014 Jan, 10. PMID:24410069 doi:http://dx.doi.org/10.1089/dna.2013.2304
  14. ↑ te Velthuis AJ, van den Worm SH, Snijder EJ. The SARS-coronavirus nsp7+nsp8 complex is a unique multimeric RNA polymerase capable of both de novo initiation and primer extension. Nucleic Acids Res. 2012 Feb;40(4):1737-47. doi: 10.1093/nar/gkr893. Epub 2011 Oct, 29. PMID:22039154 doi:http://dx.doi.org/10.1093/nar/gkr893
  15. ↑ te Velthuis AJ, van den Worm SH, Snijder EJ. The SARS-coronavirus nsp7+nsp8 complex is a unique multimeric RNA polymerase capable of both de novo initiation and primer extension. Nucleic Acids Res. 2012 Feb;40(4):1737-47. doi: 10.1093/nar/gkr893. Epub 2011 Oct, 29. PMID:22039154 doi:http://dx.doi.org/10.1093/nar/gkr893
  16. ↑ Miknis ZJ, Donaldson EF, Umland TC, Rimmer RA, Baric RS, Schultz LW. Severe acute respiratory syndrome coronavirus nsp9 dimerization is essential for efficient viral growth. J Virol. 2009 Apr;83(7):3007-18. Epub 2009 Jan 19. PMID:19153232 doi:10.1128/JVI.01505-08
  17. ↑ Bouvet M, Imbert I, Subissi L, Gluais L, Canard B, Decroly E. RNA 3'-end mismatch excision by the severe acute respiratory syndrome coronavirus nonstructural protein nsp10/nsp14 exoribonuclease complex. Proc Natl Acad Sci U S A. 2012 Jun 12;109(24):9372-7. doi:, 10.1073/pnas.1201130109. Epub 2012 May 25. PMID:22635272 doi:http://dx.doi.org/10.1073/pnas.1201130109
  18. ↑ Ahn DG, Choi JK, Taylor DR, Oh JW. Biochemical characterization of a recombinant SARS coronavirus nsp12 RNA-dependent RNA polymerase capable of copying viral RNA templates. Arch Virol. 2012 Nov;157(11):2095-104. doi: 10.1007/s00705-012-1404-x. Epub 2012 , Jul 13. PMID:22791111 doi:http://dx.doi.org/10.1007/s00705-012-1404-x
  19. ↑ Tanner JA, Watt RM, Chai YB, Lu LY, Lin MC, Peiris JS, Poon LL, Kung HF, Huang JD. The severe acute respiratory syndrome (SARS) coronavirus NTPase/helicase belongs to a distinct class of 5' to 3' viral helicases. J Biol Chem. 2003 Oct 10;278(41):39578-82. Epub 2003 Aug 13. PMID:12917423 doi:http://dx.doi.org/10.1074/jbc.C300328200
  20. ↑ Adedeji AO, Marchand B, Te Velthuis AJ, Snijder EJ, Weiss S, Eoff RL, Singh K, Sarafianos SG. Mechanism of nucleic acid unwinding by SARS-CoV helicase. PLoS One. 2012;7(5):e36521. doi: 10.1371/journal.pone.0036521. Epub 2012 May 15. PMID:22615777 doi:http://dx.doi.org/10.1371/journal.pone.0036521
  21. ↑ Minskaia E, Hertzig T, Gorbalenya AE, Campanacci V, Cambillau C, Canard B, Ziebuhr J. Discovery of an RNA virus 3'->5' exoribonuclease that is critically involved in coronavirus RNA synthesis. Proc Natl Acad Sci U S A. 2006 Mar 28;103(13):5108-13. Epub 2006 Mar 20. PMID:16549795 doi:http://dx.doi.org/0508200103
  22. ↑ Bouvet M, Debarnot C, Imbert I, Selisko B, Snijder EJ, Canard B, Decroly E. In vitro reconstitution of SARS-coronavirus mRNA cap methylation. PLoS Pathog. 2010 Apr 22;6(4):e1000863. doi: 10.1371/journal.ppat.1000863. PMID:20421945 doi:http://dx.doi.org/10.1371/journal.ppat.1000863
  23. ↑ Denison MR, Graham RL, Donaldson EF, Eckerle LD, Baric RS. Coronaviruses: an RNA proofreading machine regulates replication fidelity and diversity. RNA Biol. 2011 Mar-Apr;8(2):270-9. doi: 10.4161/rna.8.2.15013. Epub 2011 Mar 1. PMID:21593585 doi:http://dx.doi.org/10.4161/rna.8.2.15013
  24. ↑ Bouvet M, Imbert I, Subissi L, Gluais L, Canard B, Decroly E. RNA 3'-end mismatch excision by the severe acute respiratory syndrome coronavirus nonstructural protein nsp10/nsp14 exoribonuclease complex. Proc Natl Acad Sci U S A. 2012 Jun 12;109(24):9372-7. doi:, 10.1073/pnas.1201130109. Epub 2012 May 25. PMID:22635272 doi:http://dx.doi.org/10.1073/pnas.1201130109
  25. ↑ Smith EC, Blanc H, Surdel MC, Vignuzzi M, Denison MR. Coronaviruses lacking exoribonuclease activity are susceptible to lethal mutagenesis: evidence for proofreading and potential therapeutics. PLoS Pathog. 2013 Aug;9(8):e1003565. doi: 10.1371/journal.ppat.1003565. Epub 2013, Aug 15. PMID:23966862 doi:http://dx.doi.org/10.1371/journal.ppat.1003565
  26. ↑ Agostini ML, Andres EL, Sims AC, Graham RL, Sheahan TP, Lu X, Smith EC, Case JB, Feng JY, Jordan R, Ray AS, Cihlar T, Siegel D, Mackman RL, Clarke MO, Baric RS, Denison MR. Coronavirus Susceptibility to the Antiviral Remdesivir (GS-5734) Is Mediated by the Viral Polymerase and the Proofreading Exoribonuclease. mBio. 2018 Mar 6;9(2). pii: mBio.00221-18. doi: 10.1128/mBio.00221-18. PMID:29511076 doi:http://dx.doi.org/10.1128/mBio.00221-18
  27. ↑ Decroly E, Imbert I, Coutard B, Bouvet M, Selisko B, Alvarez K, Gorbalenya AE, Snijder EJ, Canard B. Coronavirus nonstructural protein 16 is a cap-0 binding enzyme possessing (nucleoside-2'O)-methyltransferase activity. J Virol. 2008 Aug;82(16):8071-84. doi: 10.1128/JVI.00407-08. Epub 2008 Apr 16. PMID:18417574 doi:http://dx.doi.org/10.1128/JVI.00407-08
  28. ↑ Bouvet M, Debarnot C, Imbert I, Selisko B, Snijder EJ, Canard B, Decroly E. In vitro reconstitution of SARS-coronavirus mRNA cap methylation. PLoS Pathog. 2010 Apr 22;6(4):e1000863. doi: 10.1371/journal.ppat.1000863. PMID:20421945 doi:http://dx.doi.org/10.1371/journal.ppat.1000863
  29. ↑ Daczkowski CM, Dzimianski JV, Clasman JR, Goodwin O, Mesecar AD, Pegan SD. Structural insights into the interaction of coronavirus papain-like proteases and interferon-stimulated gene product 15 from different species. J Mol Biol. 2017 Apr 21. pii: S0022-2836(17)30187-0. doi:, 10.1016/j.jmb.2017.04.011. PMID:28438633 doi:http://dx.doi.org/10.1016/j.jmb.2017.04.011

5tl6, resolution 2.62Å

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