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- PDB-2qeq: Crystal structure of kunjin virus ns3 helicase -

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Basic information

Entry
Database: PDB / ID: 2qeq
TitleCrystal structure of kunjin virus ns3 helicase
ComponentsFlavivirin protease NS3 catalytic subunit
KeywordsHYDROLASE / helicase / flavivirus
Function / homology
Function and homology information


symbiont-mediated suppression of host JAK-STAT cascade via inhibition of JAK1 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of host TYK2 activity / flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT1 activity / double-stranded RNA binding / viral capsid / nucleoside-triphosphate phosphatase / mRNA (guanine-N7)-methyltransferase / methyltransferase cap1 ...symbiont-mediated suppression of host JAK-STAT cascade via inhibition of JAK1 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of host TYK2 activity / flavivirin / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT2 activity / symbiont-mediated suppression of host JAK-STAT cascade via inhibition of STAT1 activity / double-stranded RNA binding / viral capsid / nucleoside-triphosphate phosphatase / mRNA (guanine-N7)-methyltransferase / methyltransferase cap1 / clathrin-dependent endocytosis of virus by host cell / mRNA (nucleoside-2'-O-)-methyltransferase activity / mRNA 5'-cap (guanine-N7-)-methyltransferase activity / RNA helicase activity / host cell endoplasmic reticulum membrane / host cell perinuclear region of cytoplasm / protein dimerization activity / symbiont-mediated suppression of host type I interferon-mediated signaling pathway / RNA helicase / induction by virus of host autophagy / RNA-directed RNA polymerase / viral RNA genome replication / serine-type endopeptidase activity / RNA-dependent RNA polymerase activity / virus-mediated perturbation of host defense response / fusion of virus membrane with host endosome membrane / viral envelope / host cell nucleus / virion attachment to host cell / structural molecule activity / virion membrane / ATP hydrolysis activity / proteolysis / extracellular region / ATP binding / membrane / metal ion binding
Similarity search - Function
: / Flavivirus capsid protein C superfamily / RNA-directed RNA polymerase, thumb domain, Flavivirus / Flavivirus RNA-directed RNA polymerase, thumb domain / Flavivirus non-structural protein NS2B / Flavivirus envelope glycoprotein E, stem/anchor domain / : / Flavivirus NS3 helicase, C-terminal helical domain / Genome polyprotein, Flavivirus / Flavivirus non-structural protein NS4A ...: / Flavivirus capsid protein C superfamily / RNA-directed RNA polymerase, thumb domain, Flavivirus / Flavivirus RNA-directed RNA polymerase, thumb domain / Flavivirus non-structural protein NS2B / Flavivirus envelope glycoprotein E, stem/anchor domain / : / Flavivirus NS3 helicase, C-terminal helical domain / Genome polyprotein, Flavivirus / Flavivirus non-structural protein NS4A / Flavivirus non-structural protein NS2B / Flavivirus capsid protein C / Flavivirus non-structural protein NS4B / mRNA cap 0/1 methyltransferase / Flavivirus capsid protein C / Flavivirus non-structural protein NS4B / Flavivirus non-structural protein NS4A / Flavivirus NS2B domain profile. / mRNA cap 0 and cap 1 methyltransferase (EC 2.1.1.56 and EC 2.1.1.57) domain profile. / Flavivirus non-structural protein NS2A / Flavivirus non-structural protein NS2A / Flavivirus NS3, petidase S7 / Peptidase S7, Flavivirus NS3 serine protease / Flavivirus NS3 protease (NS3pro) domain profile. / RNA-directed RNA polymerase, flavivirus / Flavivirus RNA-directed RNA polymerase, fingers and palm domains / Flavivirus non-structural Protein NS1 / Flavivirus non-structural protein NS1 / Envelope glycoprotein M, flavivirus / Flavivirus envelope glycoprotein M / Envelope glycoprotein M superfamily, flavivirus / Flavivirus polyprotein propeptide / Flavivirus polyprotein propeptide superfamily / Flavivirus polyprotein propeptide / Flaviviral glycoprotein E, central domain, subdomain 1 / Flaviviral glycoprotein E, central domain, subdomain 2 / Flavivirus envelope glycoprotein E, Stem/Anchor domain / Flavivirus glycoprotein E, immunoglobulin-like domain / Flavivirus envelope glycoprotein E, Stem/Anchor domain superfamily / Flavivirus glycoprotein, immunoglobulin-like domain / Flavivirus glycoprotein central and dimerisation domain / Flavivirus glycoprotein, central and dimerisation domains / Ribosomal RNA methyltransferase, FtsJ domain / FtsJ-like methyltransferase / Flavivirus/Alphavirus glycoprotein, immunoglobulin-like domain superfamily / Flavivirus glycoprotein, central and dimerisation domain superfamily / Flaviviral glycoprotein E, dimerisation domain / DEAD box, Flavivirus / Flavivirus DEAD domain / helicase superfamily c-terminal domain / Immunoglobulin E-set / Superfamilies 1 and 2 helicase C-terminal domain profile. / Superfamilies 1 and 2 helicase ATP-binding type-1 domain profile. / DEAD-like helicases superfamily / Helicase, C-terminal / Helicase superfamily 1/2, ATP-binding domain / P-loop containing nucleotide triphosphate hydrolases / RNA-directed RNA polymerase, catalytic domain / RdRp of positive ssRNA viruses catalytic domain profile. / S-adenosyl-L-methionine-dependent methyltransferase superfamily / Peptidase S1, PA clan / DNA/RNA polymerase superfamily / P-loop containing nucleoside triphosphate hydrolase / Rossmann fold / 3-Layer(aba) Sandwich / Alpha Beta
Similarity search - Domain/homology
Biological speciesKunjin virus
MethodX-RAY DIFFRACTION / SYNCHROTRON / MOLECULAR REPLACEMENT / Resolution: 3.1 Å
AuthorsMilani, M. / Mastrangelo, E. / Bolognesi, M.
CitationJournal: J.Mol.Biol. / Year: 2007
Title: Crystal structure and activity of Kunjin virus NS3 helicase; protease and helicase domain assembly in the full length NS3 protein
Authors: Mastrangelo, E. / Milani, M. / Bollati, M. / Selisko, B. / Peyrane, F. / Pandini, V. / Sorrentino, G. / Canard, B. / Konarev, P.V. / Svergun, D.I. / de Lamballerie, X. / Coutard, B. / ...Authors: Mastrangelo, E. / Milani, M. / Bollati, M. / Selisko, B. / Peyrane, F. / Pandini, V. / Sorrentino, G. / Canard, B. / Konarev, P.V. / Svergun, D.I. / de Lamballerie, X. / Coutard, B. / Khromykh, A.A. / Bolognesi, M.
History
DepositionJun 26, 2007Deposition site: RCSB / Processing site: RCSB
Revision 1.0Aug 14, 2007Provider: repository / Type: Initial release
Revision 1.1Jul 13, 2011Group: Version format compliance
Revision 1.2Aug 30, 2023Group: Data collection / Database references / Refinement description
Category: chem_comp_atom / chem_comp_bond ...chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model
Item: _database_2.pdbx_DOI / _database_2.pdbx_database_accession

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

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Assembly

Deposited unit
A: Flavivirin protease NS3 catalytic subunit
B: Flavivirin protease NS3 catalytic subunit


Theoretical massNumber of molelcules
Total (without water)98,0232
Polymers98,0232
Non-polymers00
Water00
1
A: Flavivirin protease NS3 catalytic subunit


Theoretical massNumber of molelcules
Total (without water)49,0111
Polymers49,0111
Non-polymers00
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
2
B: Flavivirin protease NS3 catalytic subunit


Theoretical massNumber of molelcules
Total (without water)49,0111
Polymers49,0111
Non-polymers00
Water0
TypeNameSymmetry operationNumber
identity operation1_555x,y,z1
Unit cell
Length a, b, c (Å)172.129, 38.095, 148.113
Angle α, β, γ (deg.)90.00, 96.98, 90.00
Int Tables number5
Space group name H-MC121

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Components

#1: Protein Flavivirin protease NS3 catalytic subunit / E.C.3.4.21.91 / NS3 HELICASE


Mass: 49011.496 Da / Num. of mol.: 2 / Fragment: residues 1691-2124 of the virus polyprotein
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Kunjin virus (STRAIN MRM61C) / Genus: Flavivirus / Species: West Nile virus / Strain: MRM61C / Description: part of Genome polyprotein / Production host: Escherichia coli (E. coli) / References: UniProt: P14335, flavivirin

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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: 2.46 Å3/Da / Density % sol: 49.95 %
Crystal growTemperature: 293 K / Method: vapor diffusion, sitting drop / pH: 8.5
Details: PEG 4000 10%, Na Acetate 0.2 M, pH 8.5, VAPOR DIFFUSION, SITTING DROP, temperature 293K

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Data collection

DiffractionMean temperature: 100 K
Diffraction sourceSource: SYNCHROTRON / Site: ESRF / Beamline: ID23-1 / Wavelength: 0.979 Å
DetectorType: ADSC QUANTUM 315 / Detector: CCD / Date: Apr 22, 2006
RadiationMonochromator: liquid-nitrogen-cooled channel-cut silicon [111] monochromator
Protocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthWavelength: 0.979 Å / Relative weight: 1
ReflectionResolution: 3.1→40 Å / Num. all: 17953 / Num. obs: 17953 / % possible obs: 99.8 % / Observed criterion σ(F): 0 / Observed criterion σ(I): 0 / Redundancy: 3.3 % / Rmerge(I) obs: 0.153 / Net I/σ(I): 10.9
Reflection shellResolution: 3.1→3.27 Å / Redundancy: 3.4 % / Rmerge(I) obs: 0.609 / Mean I/σ(I) obs: 3.2 / Num. unique all: 2592 / % possible all: 99.8

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Processing

Software
NameVersionClassification
ADSCQuantumdata collection
MOLREPphasing
REFMAC5.2refinement
MOSFLMdata reduction
SCALAdata scaling
RefinementMethod to determine structure: MOLECULAR REPLACEMENT
Starting model: 2BMF

2bmf


Resolution: 3.1→39.75 Å / Cor.coef. Fo:Fc: 0.871 / Cor.coef. Fo:Fc free: 0.756 / Cross valid method: THROUGHOUT / σ(F): 0 / σ(I): 0 / ESU R Free: 0.64 / Stereochemistry target values: MAXIMUM LIKELIHOOD / Details: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS
RfactorNum. reflection% reflectionSelection details
Rfree0.33058 925 5.2 %RANDOM
Rwork0.24316 ---
all0.24738 ---
obs0.24738 17025 99.77 %-
Solvent computationIon probe radii: 0.8 Å / Shrinkage radii: 0.8 Å / VDW probe radii: 1.2 Å / Solvent model: MASK
Displacement parametersBiso mean: 42.418 Å2
Baniso -1Baniso -2Baniso -3
1--1.88 Å20 Å21.37 Å2
2---2.71 Å20 Å2
3---4.93 Å2
Refinement stepCycle: LAST / Resolution: 3.1→39.75 Å
ProteinNucleic acidLigandSolventTotal
Num. atoms6398 0 0 0 6398
Refine LS restraints
Refine-IDTypeDev idealDev ideal targetNumber
X-RAY DIFFRACTIONr_bond_refined_d0.0070.0226529
X-RAY DIFFRACTIONr_bond_other_d
X-RAY DIFFRACTIONr_angle_refined_deg0.9911.9498847
X-RAY DIFFRACTIONr_angle_other_deg
X-RAY DIFFRACTIONr_dihedral_angle_1_deg6.5415796
X-RAY DIFFRACTIONr_dihedral_angle_2_deg41.18522.898314
X-RAY DIFFRACTIONr_dihedral_angle_3_deg18.991151109
X-RAY DIFFRACTIONr_dihedral_angle_4_deg15.4181570
X-RAY DIFFRACTIONr_chiral_restr0.0680.2976
X-RAY DIFFRACTIONr_gen_planes_refined0.0030.024988
X-RAY DIFFRACTIONr_gen_planes_other
X-RAY DIFFRACTIONr_nbd_refined0.210.22597
X-RAY DIFFRACTIONr_nbd_other
X-RAY DIFFRACTIONr_nbtor_refined0.30.24373
X-RAY DIFFRACTIONr_nbtor_other
X-RAY DIFFRACTIONr_xyhbond_nbd_refined0.1440.2140
X-RAY DIFFRACTIONr_xyhbond_nbd_other
X-RAY DIFFRACTIONr_metal_ion_refined
X-RAY DIFFRACTIONr_metal_ion_other
X-RAY DIFFRACTIONr_symmetry_vdw_refined0.2370.267
X-RAY DIFFRACTIONr_symmetry_vdw_other
X-RAY DIFFRACTIONr_symmetry_hbond_refined0.0790.22
X-RAY DIFFRACTIONr_symmetry_hbond_other
X-RAY DIFFRACTIONr_symmetry_metal_ion_refined
X-RAY DIFFRACTIONr_symmetry_metal_ion_other
X-RAY DIFFRACTIONr_mcbond_it1.51624014
X-RAY DIFFRACTIONr_mcbond_other
X-RAY DIFFRACTIONr_mcangle_it2.83836485
X-RAY DIFFRACTIONr_scbond_it3.12242515
X-RAY DIFFRACTIONr_scangle_it5.00962362
X-RAY DIFFRACTIONr_rigid_bond_restr
X-RAY DIFFRACTIONr_sphericity_free
X-RAY DIFFRACTIONr_sphericity_bonded
LS refinement shellResolution: 3.1→3.18 Å / Total num. of bins used: 20
RfactorNum. reflection% reflection
Rfree0.396 86 -
Rwork0.265 1256 -
obs--99.48 %

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