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Open data
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Basic information
Entry | Database: PDB / ID: 7keh | ||||||
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Title | Crystal structure from SARS-CoV-2 NendoU NSP15 | ||||||
![]() | Uridylate-specific endoribonuclease | ||||||
![]() | VIRAL PROTEIN / HYDROLASE / NSP15 / NendoU / covid-19 / covid / sars / sars-cov-2 / endoribonuclease | ||||||
Function / homology | ![]() protein guanylyltransferase activity / RNA endonuclease activity producing 3'-phosphomonoesters, hydrolytic mechanism / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / Lyases; Phosphorus-oxygen lyases / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / ISG15-specific peptidase activity / TRAF3-dependent IRF activation pathway ...protein guanylyltransferase activity / RNA endonuclease activity producing 3'-phosphomonoesters, hydrolytic mechanism / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / Lyases; Phosphorus-oxygen lyases / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / ISG15-specific peptidase activity / TRAF3-dependent IRF activation pathway / Transcription of SARS-CoV-2 sgRNAs / Translation of Replicase and Assembly of the Replication Transcription Complex / snRNP Assembly / Replication of the SARS-CoV-2 genome / double membrane vesicle viral factory outer membrane / Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters / host cell endoplasmic reticulum-Golgi intermediate compartment / SARS coronavirus main proteinase / 3'-5'-RNA exonuclease activity / 5'-3' DNA helicase activity / host cell endosome / symbiont-mediated degradation of host mRNA / mRNA guanylyltransferase / symbiont-mediated suppression of host ISG15-protein conjugation / G-quadruplex RNA binding / symbiont-mediated suppression of host toll-like receptor signaling pathway / omega peptidase activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity / SARS-CoV-2 modulates host translation machinery / mRNA (guanine-N7)-methyltransferase / host cell Golgi apparatus / methyltransferase cap1 / symbiont-mediated perturbation of host ubiquitin-like protein modification / symbiont-mediated suppression of host NF-kappaB cascade / DNA helicase / chromatin extrusion motor activity / ATP-dependent H2AZ histone chaperone activity / cohesin loader activity / ATP-dependent H3-H4 histone complex chaperone activity / DNA clamp loader activity / methyltransferase cap1 activity / ubiquitinyl hydrolase 1 / cysteine-type deubiquitinase activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / forked DNA-dependent helicase activity / single-stranded 3'-5' DNA helicase activity / four-way junction helicase activity / double-stranded DNA helicase activity / Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases / single-stranded RNA binding / host cell perinuclear region of cytoplasm / viral protein processing / lyase activity / : / host cell endoplasmic reticulum membrane / RNA helicase / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / copper ion binding / viral translational frameshifting / symbiont-mediated activation of host autophagy / symbiont-mediated suppression of host gene expression / RNA-directed RNA polymerase / cysteine-type endopeptidase activity / viral RNA genome replication / RNA-directed RNA polymerase activity / DNA-templated transcription / lipid binding / host cell nucleus / SARS-CoV-2 activates/modulates innate and adaptive immune responses / ATP hydrolysis activity / proteolysis / RNA binding / zinc ion binding / ATP binding / membrane Similarity search - Function | ||||||
Biological species | ![]() ![]() | ||||||
Method | ![]() ![]() ![]() | ||||||
![]() | Godoy, A.S. / Nakamura, A.M. / Pereira, H.M. / Noske, G.D. / Gawriljuk, V.O. / Fernandes, R.S. / Oliveira, K.I.Z. / Oliva, G. | ||||||
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![]() | ![]() Title: Allosteric regulation and crystallographic fragment screening of SARS-CoV-2 NSP15 endoribonuclease. Authors: Andre Schutzer Godoy / Aline Minalli Nakamura / Alice Douangamath / Yun Song / Gabriela Dias Noske / Victor Oliveira Gawriljuk / Rafaela Sachetto Fernandes / Humberto D Muniz Pereira / ...Authors: Andre Schutzer Godoy / Aline Minalli Nakamura / Alice Douangamath / Yun Song / Gabriela Dias Noske / Victor Oliveira Gawriljuk / Rafaela Sachetto Fernandes / Humberto D Muniz Pereira / Ketllyn Irene Zagato Oliveira / Daren Fearon / Alexandre Dias / Tobias Krojer / Michael Fairhead / Alisa Powell / Louise Dunnet / Jose Brandao-Neto / Rachael Skyner / Rod Chalk / Dávid Bajusz / Miklós Bege / Anikó Borbás / György Miklós Keserű / Frank von Delft / Glaucius Oliva / ![]() ![]() ![]() ![]() ![]() Abstract: Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of coronavirus disease 2019 (COVID-19). The NSP15 endoribonuclease enzyme, known as NendoU, is highly conserved and ...Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is the causative agent of coronavirus disease 2019 (COVID-19). The NSP15 endoribonuclease enzyme, known as NendoU, is highly conserved and plays a critical role in the ability of the virus to evade the immune system. NendoU is a promising target for the development of new antiviral drugs. However, the complexity of the enzyme's structure and kinetics, along with the broad range of recognition sequences and lack of structural complexes, hampers the development of inhibitors. Here, we performed enzymatic characterization of NendoU in its monomeric and hexameric form, showing that hexamers are allosteric enzymes with a positive cooperative index, and with no influence of manganese on enzymatic activity. Through combining cryo-electron microscopy at different pHs, X-ray crystallography and biochemical and structural analysis, we showed that NendoU can shift between open and closed forms, which probably correspond to active and inactive states, respectively. We also explored the possibility of NendoU assembling into larger supramolecular structures and proposed a mechanism for allosteric regulation. In addition, we conducted a large fragment screening campaign against NendoU and identified several new allosteric sites that could be targeted for the development of new inhibitors. Overall, our findings provide insights into the complex structure and function of NendoU and offer new opportunities for the development of inhibitors. | ||||||
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Structure visualization
Structure viewer | Molecule: ![]() ![]() |
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Downloads & links
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Download
PDBx/mmCIF format | ![]() | 302.5 KB | Display | ![]() |
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PDB format | ![]() | 244.7 KB | Display | ![]() |
PDBx/mmJSON format | ![]() | Tree view | ![]() | |
Others | ![]() |
-Validation report
Summary document | ![]() | 971.3 KB | Display | ![]() |
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Full document | ![]() | 975.4 KB | Display | |
Data in XML | ![]() | 31.5 KB | Display | |
Data in CIF | ![]() | 45.9 KB | Display | |
Arichive directory | ![]() ![]() | HTTPS FTP |
-Related structure data
Related structure data | ![]() 5s6xC ![]() 5s6yC ![]() 5s6zC ![]() 5s70C ![]() 5s71C ![]() 5s72C ![]() 5sa4C ![]() 5sa5C ![]() 5sa6C ![]() 5sa7C ![]() 5sa8C ![]() 5sa9C ![]() 5saaC ![]() 5sabC ![]() 5sacC ![]() 5sadC ![]() 5saeC ![]() 5safC ![]() 5sagC ![]() 5sahC ![]() 5saiC ![]() 5sbfC ![]() 7kegC ![]() 7kf4C ![]() 7me0C ![]() 7n7rC ![]() 7n7uC ![]() 7n7wC ![]() 7n7yC ![]() 7n83C ![]() 7rb0C ![]() 7rb2C ![]() 6x1bS S: Starting model for refinement C: citing same article ( |
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Similar structure data |
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Assembly
Deposited unit | ![]()
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Unit cell |
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Components
#1: Protein | Mass: 39112.535 Da / Num. of mol.: 2 Source method: isolated from a genetically manipulated source Source: (gene. exp.) ![]() ![]() Gene: rep, 1a-1b / Production host: ![]() ![]() References: UniProt: P0DTD1, Hydrolases; Acting on ester bonds #2: Chemical | #3: Chemical | #4: Water | ChemComp-HOH / | Has ligand of interest | N | |
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-Experimental details
-Experiment
Experiment | Method: ![]() |
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Sample preparation
Crystal | Density Matthews: 4.68 Å3/Da / Density % sol: 73.7 % |
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Crystal grow | Temperature: 293 K / Method: vapor diffusion / pH: 6.5 Details: 20 % w/v Polyethylene glycol 3350, 100 mM BIS-TRIS propane, pH 6.5, 200 mM Sodium sulfate |
-Data collection
Diffraction | Mean temperature: 100 K / Serial crystal experiment: N | ||||||||||||||||||||||||
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Diffraction source | Source: ![]() ![]() ![]() | ||||||||||||||||||||||||
Detector | Type: DECTRIS EIGER X 16M / Detector: PIXEL / Date: Jun 20, 2020 | ||||||||||||||||||||||||
Radiation | Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray | ||||||||||||||||||||||||
Radiation wavelength | Wavelength: 0.9794 Å / Relative weight: 1 | ||||||||||||||||||||||||
Reflection | Resolution: 2.59→84.65 Å / Num. obs: 37814 / % possible obs: 94.8 % / Redundancy: 29.8 % / Biso Wilson estimate: 63.68 Å2 / CC1/2: 0.99 / Rmerge(I) obs: 1.031 / Rpim(I) all: 0.192 / Rrim(I) all: 1.049 / Net I/σ(I): 7.6 | ||||||||||||||||||||||||
Reflection shell | Diffraction-ID: 1
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Processing
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Refinement | Method to determine structure: ![]() Starting model: 6x1b Resolution: 2.59→84.65 Å / Cor.coef. Fo:Fc: 0.918 / Cor.coef. Fo:Fc free: 0.905 / Rfactor Rfree error: 0 / SU R Cruickshank DPI: 0.339 / Cross valid method: THROUGHOUT / σ(F): 0 / SU R Blow DPI: 0.355 / SU Rfree Blow DPI: 0.241 / SU Rfree Cruickshank DPI: 0.24
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Displacement parameters | Biso max: 149.57 Å2 / Biso mean: 57.8 Å2 / Biso min: 20.5 Å2
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Refine analyze | Luzzati coordinate error obs: 0.32 Å | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Refinement step | Cycle: final / Resolution: 2.59→84.65 Å
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Refine LS restraints |
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LS refinement shell | Resolution: 2.59→2.66 Å / Rfactor Rfree error: 0 / Total num. of bins used: 19
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Refinement TLS params. | Method: refined / Refine-ID: X-RAY DIFFRACTION
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Refinement TLS group |
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