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- PDB-3j6m: Kinetic and Structural Analysis of Coxsackievirus B3 Receptor Int... -

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Basic information

Entry
Database: PDB / ID: 3j6m
TitleKinetic and Structural Analysis of Coxsackievirus B3 Receptor Interactions and Formation of the A-particle
ComponentsCoxsackievirus and adenovirus receptor
KeywordsCELL ADHESION / Coxsackievirus B3 / CVB3 / CAR
Function / homology
Function and homology information


AV node cell-bundle of His cell adhesion involved in cell communication / cell adhesive protein binding involved in AV node cell-bundle of His cell communication / homotypic cell-cell adhesion / AV node cell to bundle of His cell communication / epithelial structure maintenance / regulation of AV node cell action potential / gamma-delta T cell activation / transepithelial transport / germ cell migration / apicolateral plasma membrane ...AV node cell-bundle of His cell adhesion involved in cell communication / cell adhesive protein binding involved in AV node cell-bundle of His cell communication / homotypic cell-cell adhesion / AV node cell to bundle of His cell communication / epithelial structure maintenance / regulation of AV node cell action potential / gamma-delta T cell activation / transepithelial transport / germ cell migration / apicolateral plasma membrane / cell-cell junction organization / connexin binding / cardiac muscle cell development / heterophilic cell-cell adhesion via plasma membrane cell adhesion molecules / intercalated disc / bicellular tight junction / cell adhesion molecule binding / neutrophil chemotaxis / acrosomal vesicle / filopodium / mitochondrion organization / PDZ domain binding / Cell surface interactions at the vascular wall / adherens junction / neuromuscular junction / beta-catenin binding / Immunoregulatory interactions between a Lymphoid and a non-Lymphoid cell / cell-cell junction / integrin binding / cell junction / heart development / virus receptor activity / growth cone / cell body / actin cytoskeleton organization / basolateral plasma membrane / defense response to virus / neuron projection / membrane raft / signaling receptor binding / protein-containing complex / extracellular space / extracellular region / nucleoplasm / identical protein binding / plasma membrane / cytoplasm
Similarity search - Function
: / Immunoglobulin domain / Immunoglobulin subtype 2 / Immunoglobulin C-2 Type / Immunoglobulin V-Type / Immunoglobulin V-set domain / Immunoglobulin V-set domain / Immunoglobulin subtype / Immunoglobulin / Ig-like domain profile. ...: / Immunoglobulin domain / Immunoglobulin subtype 2 / Immunoglobulin C-2 Type / Immunoglobulin V-Type / Immunoglobulin V-set domain / Immunoglobulin V-set domain / Immunoglobulin subtype / Immunoglobulin / Ig-like domain profile. / Immunoglobulin-like domain / Immunoglobulin-like domain superfamily / Immunoglobulin-like fold
Similarity search - Domain/homology
Coxsackievirus and adenovirus receptor
Similarity search - Component
Biological speciesHomo sapiens (human)
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 9 Å
AuthorsOrgantini, L.J. / Makhov, A.M. / Conway, J.F. / Hafenstein, S. / Carson, S.D.
CitationJournal: J Virol / Year: 2014
Title: Kinetic and structural analysis of coxsackievirus B3 receptor interactions and formation of the A-particle.
Authors: Lindsey J Organtini / Alexander M Makhov / James F Conway / Susan Hafenstein / Steven D Carson /
Abstract: The coxsackievirus and adenovirus receptor (CAR) has been identified as the cellular receptor for group B coxsackieviruses, including serotype 3 (CVB3). CAR mediates infection by binding to CVB3 and ...The coxsackievirus and adenovirus receptor (CAR) has been identified as the cellular receptor for group B coxsackieviruses, including serotype 3 (CVB3). CAR mediates infection by binding to CVB3 and catalyzing conformational changes in the virus that result in formation of the altered, noninfectious A-particle. Kinetic analyses show that the apparent first-order rate constant for the inactivation of CVB3 by soluble CAR (sCAR) at physiological temperatures varies nonlinearly with sCAR concentration. Cryo-electron microscopy (cryo-EM) reconstruction of the CVB3-CAR complex resulted in a 9.0-Å resolution map that was interpreted with the four available crystal structures of CAR, providing a consensus footprint for the receptor binding site. The analysis of the cryo-EM structure identifies important virus-receptor interactions that are conserved across picornavirus species. These conserved interactions map to variable antigenic sites or structurally conserved regions, suggesting a combination of evolutionary mechanisms for receptor site preservation. The CAR-catalyzed A-particle structure was solved to a 6.6-Å resolution and shows significant rearrangement of internal features and symmetric interactions with the RNA genome.
IMPORTANCE: This report presents new information about receptor use by picornaviruses and highlights the importance of attaining at least an ∼9-Å resolution for the interpretation of cryo-EM ...IMPORTANCE: This report presents new information about receptor use by picornaviruses and highlights the importance of attaining at least an ∼9-Å resolution for the interpretation of cryo-EM complex maps. The analysis of receptor binding elucidates two complementary mechanisms for preservation of the low-affinity (initial) interaction of the receptor and defines the kinetics of receptor-catalyzed conformational change to the A-particle.
History
DepositionMar 19, 2014Deposition site: RCSB / Processing site: RCSB
Revision 1.0Apr 9, 2014Provider: repository / Type: Initial release
Revision 1.1May 7, 2014Group: Database references
Revision 1.2Jul 18, 2018Group: Data collection / Category: em_software / Item: _em_software.image_processing_id / _em_software.name

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Structure visualization

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  • Biological unit as complete icosahedral assembly
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  • Biological unit as icosahedral pentamer
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  • Biological unit as icosahedral 23 hexamer
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  • Deposited structure unit
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  • Simplified surface model + fitted atomic model
  • EMDB-5927
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  • Superimposition on EM map
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Structure viewerMolecule:
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Assembly

Deposited unit
B: Coxsackievirus and adenovirus receptor


Theoretical massNumber of molelcules
Total (without water)13,6411
Polymers13,6411
Non-polymers00
Water54030
1
B: Coxsackievirus and adenovirus receptor
x 60


Theoretical massNumber of molelcules
Total (without water)818,43060
Polymers818,43060
Non-polymers00
Water1,08160
TypeNameSymmetry operationNumber
point symmetry operation60
2


  • Idetical with deposited unit in distinct coordinate
  • icosahedral asymmetric unit
TypeNameSymmetry operationNumber
point symmetry operation1
3
B: Coxsackievirus and adenovirus receptor
x 5


  • icosahedral pentamer
  • 68.2 kDa, 5 polymers
Theoretical massNumber of molelcules
Total (without water)68,2035
Polymers68,2035
Non-polymers00
Water905
TypeNameSymmetry operationNumber
point symmetry operation5
4
B: Coxsackievirus and adenovirus receptor
x 6


  • icosahedral 23 hexamer
  • 81.8 kDa, 6 polymers
Theoretical massNumber of molelcules
Total (without water)81,8436
Polymers81,8436
Non-polymers00
Water1086
TypeNameSymmetry operationNumber
point symmetry operation6
5


  • Idetical with deposited unit in distinct coordinate
  • icosahedral asymmetric unit, std point frame
TypeNameSymmetry operationNumber
transform to point frame1
SymmetryPoint symmetry: (Schoenflies symbol: I (icosahedral))

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Components

#1: Protein Coxsackievirus and adenovirus receptor / CAR / hCAR / CVB3-binding protein / Coxsackievirus B-adenovirus receptor / HCVADR


Mass: 13640.500 Da / Num. of mol.: 1 / Fragment: UNP residues 21-144
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Gene: CXADR, CAR / Production host: Escherichia coli (E. coli) / References: UniProt: P78310
#2: Water ChemComp-HOH / water


Mass: 18.015 Da / Num. of mol.: 30 / Source method: isolated from a natural source / Formula: H2O

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Experimental details

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Experiment

ExperimentMethod: ELECTRON MICROSCOPY
EM experimentAggregation state: PARTICLE / 3D reconstruction method: single particle reconstruction

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Sample preparation

Component
IDNameTypeDetailsParent-ID
1Coxsackievirus B3 complexed with CARCOMPLEXicosahedral virus0
2Human coxsackievirus B3VIRUS1
3Coxsackievirus and adenovirus receptor1
Molecular weightValue: 7 MDa / Experimental value: YES
Details of virusEmpty: NO / Enveloped: NO / Host category: VERTEBRATES / Isolate: STRAIN / Type: VIRION
Natural hostOrganism: Homo sapiens
Buffer solutionName: 50 mM MES, 100 mM NaCl / pH: 6 / Details: 50 mM MES, 100 mM NaCl
SpecimenConc.: 0.1 mg/ml / Embedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
Specimen supportDetails: glow-discharged holey carbon Quantifoil electron microscopy grids
VitrificationInstrument: FEI VITROBOT MARK III / Cryogen name: OTHER / Temp: 95 K / Humidity: 95 %
Details: Plunged into ethane-propane (FEI VITROBOT MARK III)

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Electron microscopy imaging

Experimental equipment
Model: Tecnai F20 / Image courtesy: FEI Company
MicroscopyModel: FEI TECNAI F20 / Date: Aug 1, 2012
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 200 kV / Illumination mode: SPOT SCAN
Electron lensMode: BRIGHT FIELD / Nominal magnification: 50000 X / Calibrated magnification: 50000 X / Nominal defocus max: 3660 nm / Nominal defocus min: 1980 nm / Cs: 2 mm / Astigmatism: CTFFIND3 / Camera length: 0 mm
Specimen holderSpecimen holder model: GATAN LIQUID NITROGEN / Tilt angle max: 0 ° / Tilt angle min: 0 °
Image recordingElectron dose: 15 e/Å2 / Film or detector model: KODAK SO-163 FILM
Image scansNum. digital images: 96
RadiationProtocol: SINGLE WAVELENGTH / Monochromatic (M) / Laue (L): M / Scattering type: x-ray
Radiation wavelengthRelative weight: 1

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Processing

EM software
IDNameCategory
1Situsmodel fitting
2Auto3DEM3D reconstruction
3EMAN3D reconstruction
CTF correctionDetails: AUTO3DEM
SymmetryPoint symmetry: I (icosahedral)
3D reconstructionMethod: Common Lines / Resolution: 9 Å / Resolution method: FSC 0.5 CUT-OFF / Num. of particles: 9302 / Nominal pixel size: 1.25 Å / Actual pixel size: 1.25 Å
Details: (Single particle details: Particles were selected using EMAN) (Single particle--Applied symmetry: I)
Symmetry type: POINT
Atomic model buildingProtocol: RIGID BODY FIT / Space: REAL / Target criteria: correlation coefficient / Details: REFINEMENT PROTOCOL--rigid body
Atomic model buildingPDB-ID: 1KAC

1kac


Pdb chain-ID: B
Refinement stepCycle: LAST
ProteinNucleic acidLigandSolventTotal
Num. atoms959 0 0 30 989

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