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- PDB-7keg: Crystal structure from SARS-COV2 NendoU NSP15 -

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Entry
Database: PDB / ID: 7keg
TitleCrystal structure from SARS-COV2 NendoU NSP15
ComponentsUridylate-specific endoribonuclease
KeywordsVIRAL PROTEIN / HYDROLASE / NSP15 / NendoU / covid-19 / covid / sars / sars-cov-2 / endoribonuclease
Function / homology
Function and homology information


protein guanylyltransferase activity / RNA endonuclease activity, producing 3'-phosphomonoesters / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / Lyases; Phosphorus-oxygen lyases / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / ISG15-specific peptidase activity / Transcription of SARS-CoV-2 sgRNAs ...protein guanylyltransferase activity / RNA endonuclease activity, producing 3'-phosphomonoesters / mRNA guanylyltransferase activity / 5'-3' RNA helicase activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of TBK1 activity / Lyases; Phosphorus-oxygen lyases / Assembly of the SARS-CoV-2 Replication-Transcription Complex (RTC) / Maturation of replicase proteins / ISG15-specific peptidase activity / Transcription of SARS-CoV-2 sgRNAs / Translation of Replicase and Assembly of the Replication Transcription Complex / snRNP Assembly / TRAF3-dependent IRF activation pathway / Replication of the SARS-CoV-2 genome / Hydrolases; Acting on ester bonds; Exoribonucleases producing 5'-phosphomonoesters / : / double membrane vesicle viral factory outer membrane / SARS coronavirus main proteinase / host cell endosome / 3'-5'-RNA exonuclease activity / host cell endoplasmic reticulum-Golgi intermediate compartment / symbiont-mediated suppression of host toll-like receptor signaling pathway / symbiont-mediated degradation of host mRNA / mRNA guanylyltransferase / symbiont-mediated suppression of host ISG15-protein conjugation / G-quadruplex RNA binding / SARS-CoV-2 modulates host translation machinery / omega peptidase activity / symbiont-mediated suppression of host cytoplasmic pattern recognition receptor signaling pathway via inhibition of IRF3 activity / mRNA (guanine-N7)-methyltransferase / methyltransferase cap1 / host cell Golgi apparatus / symbiont-mediated perturbation of host ubiquitin-like protein modification / mRNA (nucleoside-2'-O-)-methyltransferase activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / DNA helicase / ubiquitinyl hydrolase 1 / cysteine-type deubiquitinase activity / Hydrolases; Acting on peptide bonds (peptidases); Cysteine endopeptidases / single-stranded RNA binding / host cell endoplasmic reticulum membrane / host cell perinuclear region of cytoplasm / viral protein processing / lyase activity / RNA helicase / induction by virus of host autophagy / RNA-directed RNA polymerase / copper ion binding / symbiont-mediated suppression of host gene expression / viral RNA genome replication / cysteine-type endopeptidase activity / RNA-dependent RNA polymerase activity / DNA-templated transcription / lipid binding / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / 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
RNA-dependent RNA polymerase, SARS-CoV-like / Nonstructural protein 14, betacoronavirus / NSP15, NendoU domain, coronavirus / : / : / Coronavirus Nonstructural protein 13, 1B domain / Coronavirus Non-structural protein 13, zinc-binding domain / Coronavirus Nonstructural protein 13, stalk domain / : / Coronavirus Nsp12 Interface domain profile. ...RNA-dependent RNA polymerase, SARS-CoV-like / Nonstructural protein 14, betacoronavirus / NSP15, NendoU domain, coronavirus / : / : / Coronavirus Nonstructural protein 13, 1B domain / Coronavirus Non-structural protein 13, zinc-binding domain / Coronavirus Nonstructural protein 13, stalk domain / : / Coronavirus Nsp12 Interface domain profile. / Nonstructural protein 15, middle domain, alpha/betacoronavirus / Nonstructural protein 15, N-terminal domain, alpha/beta-coronavirus / NSP14, guanine-N7-methyltransferase domain, coronavirus / NSP12 RNA-dependent RNA polymerase, coronavirus / Coronavirus (CoV) guanine-N7-methyltransferase (N7-MTase) domain profile. / Coronavirus (CoV) Nsp15 N-terminal oligomerization domain profile. / Nidovirus 2-O-methyltransferase / Coronavirus Nsp12 RNA-dependent RNA polymerase (RdRp) domain profile. / Nidovirus 3'-5' exoribonuclease domain / Nidovirus 2'-O-methyltransferase (2'-O-MTase) domain profile. / Nidovirus 3'-5' exoribonuclease (ExoN) domain profile. / Nonstructural protein 13, 1B domain, coronavirus / Arterivirus Nsp11 N-terminal/Coronavirus NSP15 middle domain / Non-structural protein NSP15, N-terminal domain superfamily, coronavirus / Non-structural protein NSP15, middle domain superfamily / Coronavirus replicase NSP15, N-terminal oligomerization / Nonstructural protein 15, middle domain, coronavirus / Coronavirus replicase NSP15, middle domain / Coronavirus replicase NSP15, N-terminal oligomerisation / Arterivirus Nsp11 N-terminal/coronavirus NSP15 middle (AV-Nsp11N/CoV-Nsp15M) domain profile. / Non-structural protein NSP16, coronavirus-like / Non-structural protein 14, coronavirus / RNA polymerase, N-terminal, coronavirus / Coronavirus 2'-O-methyltransferase / Coronavirus proofreading exoribonuclease / Coronavirus RNA-dependent RNA polymerase, N-terminal / Nidoviral uridylate-specific endoribonuclease (NendoU) domain profile. / Nidovirus RdRp-associated nucleotidyl transferase (NiRAN) domain / Nonstructural protein 13, zinc-binding domain, coronavirus-like / Coronaviridae zinc-binding (CV ZBD) domain profile. / Nidovirus RdRp-associated nucleotidyl transferase (NiRAN) domain profile. / Endoribonuclease EndoU-like / NendoU domain, nidovirus / Coronavirus replicase NSP15, uridylate-specific endoribonuclease / DNA2/NAM7 helicase-like, C-terminal / AAA domain / (+) RNA virus helicase core domain / (+)RNA virus helicase core domain profile. / Lipocalin signature. / Non-structural protein NSP3, SUD-N (Mac2) domain, betacoronavirus / Sarbecovirus Nsp3c-N domain profile. / Non-structural protein NSP3, N-terminal, betacoronavirus / Polyprotein cleavage domain PL2pro superfamily, betacoronavirus / Non-structural protein NSP3, SUD-N (Mac2) domain superfamily, betacoronavirus / Betacoronavirus SUD-C domain / Betacoronavirus replicase NSP3, N-terminal / NSP1 globular domain superfamily, betacoronavirus / Non-structural protein 2, SARS-CoV-like / Carbamoyl-phosphate synthase subdomain signature 2. / Coronavirus 3Ecto domain profile. / : / Betacoronavirus Nsp3e group 2-specific marker (G2M) domain profile. / NSP1, C-terminal domain, betacoronavirus / Betacoronavirus Nsp3c-M domain profile. / NSP1, globular domain, betacoronavirus / Non-structural protein NSP3, SUD-M domain, betacoronavirus / Non-structural protein NSP3, SUD-M domain superfamily, betacoronavirus / Betacoronavirus replicase NSP1 / Betacoronavirus single-stranded poly(A) binding domain / Betacoronavirus (BetaCoV) Nsp1 C-terminal domain profile. / Betacoronavirus Nsp3c-C domain profile. / Betacoronavirus Nsp3e nucleic acid-binding (NAB) domain profile. / DPUP/SUD, C-terminal, betacoronavirus / Non-structural protein NSP3, nucleic acid-binding domain superfamily, betacoronavirus / Non-structural protein 6, betacoronavirus / Betacoronavirus nucleic acid-binding (NAB) / Non-structural protein NSP3, nucleic acid-binding domain, betacoronavirus / Non-structural protein NSP3A domain-like superfamily / Papain-like protease, N-terminal domain superfamily, coronavirus / Papain-like viral protease, palm and finger domains, coronavirus / : / Coronavirus (CoV) Nsp2 middle domain profile. / Coronavirus (CoV) Nsp2 N-terminal domain profile. / Coronavirus (CoV) Nsp2 C-terminal domain profile. / NSP1, globular domain, alpha/betacoronavirus / : / Coronavirus (CoV) Nsp3 Y domain profile. / Coronavirus (CoV) Nsp1 globular domain profile. / Coronavirus replicase NSP2, N-terminal / Nonstructural protein 2, N-terminal domain, coronavirus / Coronavirus replicase NSP2, C-terminal / Non-structural protein 2, C-terminal domain, coronavirus / Coronavirus Nsp3a Ubl domain profile. / Coronavirus Nsp3d Ubl domain profile. / Coronavirus RNA-dependent RNA polymerase (RdRp) Nsp7 cofactor domain profile. / Coronavirus RNA-dependent RNA polymerase (RdRp) Nsp8 cofactor domain profile. / Coronavirus Nsp9 single-stranded RNA (ssRNA)-binding domain profile. / Coronavirus (CoV) ExoN/MTase coactivator domain profile. / NSP3, first ubiquitin-like (Ubl) domain, coronavirus / NSP3, second ubiquitin-like (Ubl) domain, coronavirus
Similarity search - Domain/homology
PHOSPHATE ION / Replicase polyprotein 1ab
Similarity search - Component
Biological speciesSevere acute respiratory syndrome coronavirus 2
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 2.9 Å
AuthorsGodoy, A.S. / Nakamura, A.M. / Pereira, H.M. / Noske, G.D. / Gawriljuk, V.O. / Fernandes, R.S. / Oliveira, K.I.Z. / Oliva, G.
Funding support Brazil, 1items
OrganizationGrant numberCountry
Sao Paulo Research Foundation (FAPESP)2013/07600-3 Brazil
CitationJournal: Nucleic Acids Res / Year: 2023
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.
History
DepositionOct 10, 2020Deposition site: RCSB / Processing site: RCSB
Revision 1.0Dec 2, 2020Provider: repository / Type: Initial release
Revision 1.1May 10, 2023Group: Database references / Category: citation / citation_author / database_2
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_ASTM / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _database_2.pdbx_DOI / _database_2.pdbx_database_accession
Revision 1.2Jul 19, 2023Group: Data collection / Category: diffrn_source
Item: _diffrn_source.pdbx_synchrotron_site / _diffrn_source.type
Revision 1.3Oct 25, 2023Group: Data collection / Refinement description
Category: chem_comp_atom / chem_comp_bond / pdbx_initial_refinement_model

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: Uridylate-specific endoribonuclease
B: Uridylate-specific endoribonuclease
hetero molecules


Theoretical massNumber of molelcules
Total (without water)78,4154
Polymers78,2252
Non-polymers1902
Water6,431357
1
A: Uridylate-specific endoribonuclease
hetero molecules

A: Uridylate-specific endoribonuclease
hetero molecules

A: Uridylate-specific endoribonuclease
hetero molecules

B: Uridylate-specific endoribonuclease
hetero molecules

B: Uridylate-specific endoribonuclease
hetero molecules

B: Uridylate-specific endoribonuclease
hetero molecules


Theoretical massNumber of molelcules
Total (without water)235,24512
Polymers234,6756
Non-polymers5706
Water1086
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
crystal symmetry operation2_545-y,x-y-1,z1
crystal symmetry operation3_655-x+y+1,-x,z1
crystal symmetry operation4_655-x+1,-y,z+1/21
crystal symmetry operation5_555y,-x+y,z+1/21
crystal symmetry operation6_545x-y,x-1,z+1/21
Buried area20060 Å2
ΔGint-191 kcal/mol
Surface area82980 Å2
MethodPISA
Unit cell
Length a, b, c (Å)150.683, 150.683, 110.299
Angle α, β, γ (deg.)90.000, 90.000, 120.000
Int Tables number173
Space group name H-MP63

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Components

#1: Protein Uridylate-specific endoribonuclease / NSP15 / NendoU


Mass: 39112.535 Da / Num. of mol.: 2
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Severe acute respiratory syndrome coronavirus 2
Gene: rep, 1a-1b / Production host: Escherichia coli (E. coli)
References: UniProt: P0DTD1, Hydrolases; Acting on ester bonds
#2: Chemical ChemComp-PO4 / PHOSPHATE ION / Phosphate


Mass: 94.971 Da / Num. of mol.: 2 / Source method: obtained synthetically / Formula: PO4
#3: Water ChemComp-HOH / water / Water


Mass: 18.015 Da / Num. of mol.: 357 / Source method: isolated from a natural source / Formula: H2O
Has ligand of interestN

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Experimental details

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Experiment

ExperimentMethod: X-RAY DIFFRACTION / Number of used crystals: 1

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Sample preparation

CrystalDensity Matthews: 4.63 Å3/Da / Density % sol: 73.43 %
Crystal growTemperature: 293 K / Method: vapor diffusion / pH: 6.2
Details: 15% PEG 8000, 0.1 M Sodium/Potassium Phosphate pH 6.2. Cryo-condition by adding 20% (v/v) ethylene glycol

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Data collection

DiffractionMean temperature: 100 K / Serial crystal experiment: N
Diffraction sourceSource: SYNCHROTRON / Site: LNLS SIRIUS / Beamline: MANACA / Wavelength: 1.35502 Å
DetectorType: DECTRIS PILATUS 2M / Detector: PIXEL / Date: Sep 1, 2020
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 1.35502 Å / Relative weight: 1
ReflectionResolution: 2.9→49.32 Å / Num. obs: 31377 / % possible obs: 99.1 % / Redundancy: 10 % / Biso Wilson estimate: 57.94 Å2 / CC1/2: 0.96 / Rmerge(I) obs: 0.572 / Rpim(I) all: 0.188 / Rrim(I) all: 0.603 / Net I/σ(I): 5 / Num. measured all: 315006 / Scaling rejects: 20
Reflection shell

Diffraction-ID: 1 / Redundancy: 10.2 %

Resolution (Å)Rmerge(I) obsNum. measured allNum. unique obsCC1/2Rpim(I) allRrim(I) allNet I/σ(I) obs% possible all
2.9-3.062.8064634745430.3160.9122.952198.5
9.17-49.320.1031060810410.9970.0330.10818.599.4

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Processing

Software
NameVersionClassification
BUSTER2.10.3refinement
Aimless0.7.4data scaling
PDB_EXTRACT3.25data extraction
XDSdata reduction
PHASERphasing
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 6X1B

6x1b


Resolution: 2.9→49.32 Å / Cor.coef. Fo:Fc: 0.931 / Cor.coef. Fo:Fc free: 0.883 / Rfactor Rfree error: 0 / SU R Cruickshank DPI: 0.446 / Cross valid method: THROUGHOUT / σ(F): 0 / SU R Blow DPI: 0.47 / SU Rfree Blow DPI: 0.274 / SU Rfree Cruickshank DPI: 0.275
RfactorNum. reflection% reflectionSelection details
Rfree0.218 1560 4.97 %RANDOM
Rwork0.175 ---
obs0.177 31370 99.1 %-
Displacement parametersBiso max: 153.88 Å2 / Biso mean: 53.58 Å2 / Biso min: 16.04 Å2
Baniso -1Baniso -2Baniso -3
1--0.423 Å20 Å20 Å2
2---0.423 Å20 Å2
3---0.8459 Å2
Refine analyzeLuzzati coordinate error obs: 0.34 Å
Refinement stepCycle: final / Resolution: 2.9→49.32 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms5500 0 10 357 5867
Biso mean--89.87 43.54 -
Num. residues----696
Refine LS restraints
Refine-IDTypeNumberRestraint functionWeightDev ideal
X-RAY DIFFRACTIONt_dihedral_angle_d1956SINUSOIDAL2
X-RAY DIFFRACTIONt_trig_c_planes160HARMONIC2
X-RAY DIFFRACTIONt_gen_planes798HARMONIC5
X-RAY DIFFRACTIONt_it5638HARMONIC20
X-RAY DIFFRACTIONt_nbd
X-RAY DIFFRACTIONt_improper_torsion
X-RAY DIFFRACTIONt_pseud_angle
X-RAY DIFFRACTIONt_chiral_improper_torsion740SEMIHARMONIC5
X-RAY DIFFRACTIONt_sum_occupancies
X-RAY DIFFRACTIONt_utility_distance
X-RAY DIFFRACTIONt_utility_angle
X-RAY DIFFRACTIONt_utility_torsion
X-RAY DIFFRACTIONt_ideal_dist_contact6495SEMIHARMONIC4
X-RAY DIFFRACTIONt_bond_d5638HARMONIC20.009
X-RAY DIFFRACTIONt_angle_deg7652HARMONIC21.17
X-RAY DIFFRACTIONt_omega_torsion2.79
X-RAY DIFFRACTIONt_other_torsion20.72
LS refinement shellResolution: 2.9→3 Å / Rfactor Rfree error: 0 / Total num. of bins used: 16
RfactorNum. reflection% reflection
Rfree0.258 139 4.9 %
Rwork0.238 2695 -
all0.239 2834 -
obs--98.51 %
Refinement TLS params.

Method: refined / Refine-ID: X-RAY DIFFRACTION

IDL11 (°2)L12 (°2)L13 (°2)L22 (°2)L23 (°2)L33 (°2)S11 (Å °)S12 (Å °)S13 (Å °)S21 (Å °)S22 (Å °)S23 (Å °)S31 (Å °)S32 (Å °)S33 (Å °)T11 (Å2)T12 (Å2)T13 (Å2)T22 (Å2)T23 (Å2)T33 (Å2)Origin x (Å)Origin y (Å)Origin z (Å)
11.44340.365-0.59261.5715-0.56991.24180.03370.08410.2331-0.16130.0090.0496-0.0503-0.0771-0.0427-0.07090.0267-0.0537-0.18960.021-0.113472.0629-22.0015-0.3673
21.24460.34260.36111.6299-0.30261.36870.0639-0.2682-0.17420.3428-0.088-0.1414-0.05250.00730.0241-0.0408-0.0471-0.012-0.16530.0555-0.213883.87523.3107-8.1692
Refinement TLS group
IDRefine-IDRefine TLS-IDSelection detailsAuth asym-IDAuth seq-ID
1X-RAY DIFFRACTION1{ A|* }A-1 - 346
2X-RAY DIFFRACTION2{ B|* }B-1 - 346

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