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- EMDB-61026: VLP structure of Chikungunya virus complexed with C37 Fab, 2f block. -

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Basic information

Entry
Database: EMDB / ID: EMD-61026
TitleVLP structure of Chikungunya virus complexed with C37 Fab, 2f block.
Map data
Sample
  • Complex: CHIKV VLP
    • Protein or peptide: C37 Fab, Heavy chain
    • Protein or peptide: C37 Fab, Light chain
    • Protein or peptide: CHIKV E1
    • Protein or peptide: Structural polyprotein
    • Protein or peptide: CHIKV capsid protein
  • Ligand: CHOLESTEROL
Keywordschikungunya / alphavirus / VIRUS LIKE PARTICLE / antibody
Function / homology
Function and homology information


T=4 icosahedral viral capsid / host cell cytoplasm / serine-type endopeptidase activity / fusion of virus membrane with host endosome membrane / symbiont entry into host cell / virion attachment to host cell / host cell plasma membrane / virion membrane / structural molecule activity / proteolysis / membrane
Similarity search - Function
Alphavirus E2 glycoprotein, domain B / Peptidase S3, togavirin / Alphavirus E2 glycoprotein / Alphavirus E3 spike glycoprotein / Alphavirus E1 glycoprotein / Alphavirus E2 glycoprotein, domain A / Alphavirus E2 glycoprotein, domain C / Alphavirus E2 glycoprotein / Alphavirus core protein / Alphavirus E3 glycoprotein ...Alphavirus E2 glycoprotein, domain B / Peptidase S3, togavirin / Alphavirus E2 glycoprotein / Alphavirus E3 spike glycoprotein / Alphavirus E1 glycoprotein / Alphavirus E2 glycoprotein, domain A / Alphavirus E2 glycoprotein, domain C / Alphavirus E2 glycoprotein / Alphavirus core protein / Alphavirus E3 glycoprotein / Alphavirus E1 glycoprotein / Alphavirus core protein (CP) domain profile. / Flavivirus/Alphavirus glycoprotein, immunoglobulin-like domain superfamily / Flavivirus glycoprotein, central and dimerisation domain superfamily / Flaviviral glycoprotein E, dimerisation domain / Immunoglobulin E-set / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan
Similarity search - Domain/homology
Structural polyprotein / Structural polyprotein / Structural polyprotein
Similarity search - Component
Biological speciesChikungunya virus / Homo sapiens (human)
Methodsingle particle reconstruction / cryo EM / Resolution: 3.3 Å
AuthorsHan X / Ji C / Wang F / Tian S / Gao FG / Yan J
Funding support China, 1 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC) China
CitationJournal: To Be Published
Title: VLP structure of Chikungunya virus complexed with C37 Fab, 2f block.
Authors: Han X / Ji C / Wang F / Tian S / Gao FG / Yan J
History
DepositionAug 1, 2024-
Header (metadata) releaseAug 6, 2025-
Map releaseAug 6, 2025-
UpdateAug 6, 2025-
Current statusAug 6, 2025Processing site: PDBj / Status: Released

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Structure visualization

Supplemental images

emd_61026.png

Downloads & links

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Map

FileDownload / File: emd_61026.map.gz / Format: CCP4 / Size: 209.3 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
Contrast
Others
AxesZ (Sec.)Y (Row.)X (Col.)
1.32 Å/pix.
x 380 pix.
= 501.6 Å		1.32 Å/pix.
x 380 pix.
= 501.6 Å		1.32 Å/pix.
x 380 pix.
= 501.6 Å

Surface

Projections

Slices (1/3)

Slices (1/2)

Slices (2/3)

Images are generated by Spider.

Voxel sizeX=Y=Z: 1.32 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 0.135
Minimum - Maximum-0.3476054 - 0.6961579
Average (Standard dev.)0.0034493397 (±0.032338794)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions380380380
Spacing380380380
CellA=B=C: 501.6 Å
α=β=γ: 90.0 °

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Supplemental data

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Half map: #2

Fileemd_61026_half_map_1.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Half map: #1

Fileemd_61026_half_map_2.map
Projections & Slices
AxesZYX

Projections

Slices (1/2)
Density Histograms

Histogram

Histogram (log scale)

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Sample components

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Entire : CHIKV VLP

EntireName: CHIKV VLP
Components
  • Complex: CHIKV VLP
    • Protein or peptide: C37 Fab, Heavy chain
    • Protein or peptide: C37 Fab, Light chain
    • Protein or peptide: CHIKV E1
    • Protein or peptide: Structural polyprotein
    • Protein or peptide: CHIKV capsid protein
  • Ligand: CHOLESTEROL

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Supramolecule #1: CHIKV VLP

SupramoleculeName: CHIKV VLP / type: complex / ID: 1 / Parent: 0 / Macromolecule list: #1-#5
Source (natural)Organism: Chikungunya virus

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Macromolecule #1: C37 Fab, Heavy chain

MacromoleculeName: C37 Fab, Heavy chain / type: protein_or_peptide / ID: 1 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 28.556869 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: EFATMETDTL LLWVLLLWVP GSTGDQVQLQ ESGPGLVKPS ETLSLTCTVS GGSIGSSSYY WGWIRQPPGK GLQWIGSFHY SGTTYYNPS LKSRVTISVD TSKNHFSLKL SSVTAADTAV YYCASRQNWN DGYFDYWGQG TLVTVSSAST KGPSVFPLAP S SKSTSGGT ...String:
EFATMETDTL LLWVLLLWVP GSTGDQVQLQ ESGPGLVKPS ETLSLTCTVS GGSIGSSSYY WGWIRQPPGK GLQWIGSFHY SGTTYYNPS LKSRVTISVD TSKNHFSLKL SSVTAADTAV YYCASRQNWN DGYFDYWGQG TLVTVSSAST KGPSVFPLAP S SKSTSGGT AALGCLVKDY FPEPVTVSWN SGALTSGVHT FPAVLQSSGL YSLSSVVTVP SSSLGTQTYI CNVNHKPSNT KV DKRVEPK SCDKTHTCPP CPHHHHHH

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Macromolecule #2: C37 Fab, Light chain

MacromoleculeName: C37 Fab, Light chain / type: protein_or_peptide / ID: 2 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Homo sapiens (human)
Molecular weightTheoretical: 26.365309 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: ELATMETDTL LLWVLLLWVP GSTGDDIQMT QSPATLSLSP GERATLFCRA SQSVSSSLAW YQQKPGQAPR LLIYDASNRA TGIPARFSG SGSGTDFTLT ISSLEPEDFA VYYCQQRGNW PPITFGQGTR LDTKRTVAAP SVFIFPPSDE QLKSGTASVV C LLNNFYPR ...String:
ELATMETDTL LLWVLLLWVP GSTGDDIQMT QSPATLSLSP GERATLFCRA SQSVSSSLAW YQQKPGQAPR LLIYDASNRA TGIPARFSG SGSGTDFTLT ISSLEPEDFA VYYCQQRGNW PPITFGQGTR LDTKRTVAAP SVFIFPPSDE QLKSGTASVV C LLNNFYPR EAKVQWKVDN ALQSGNSQES VTEQDSKDST YSLSSTLTLS KADYEKHKVY ACEVTHQGLS SPVTKSFNRG EC S

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Macromolecule #3: CHIKV E1

MacromoleculeName: CHIKV E1 / type: protein_or_peptide / ID: 3 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Chikungunya virus
Molecular weightTheoretical: 47.446906 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: YEHVTVIPNT VGVPYKTLVN RPGYSPMVLE MELLSVTLEP TLSLDYITCE YKTVIPSPYV KCCGTAECKD KNLPDYSCKV FTGVYPFMW GGAYCFCDAE NTQLSEAHVE KSESCKTEFA SAYRAHTASA SAKLRVLYQG NNITVTAYAN GDHAVTVKDA K FIVGPMSS ...String:
YEHVTVIPNT VGVPYKTLVN RPGYSPMVLE MELLSVTLEP TLSLDYITCE YKTVIPSPYV KCCGTAECKD KNLPDYSCKV FTGVYPFMW GGAYCFCDAE NTQLSEAHVE KSESCKTEFA SAYRAHTASA SAKLRVLYQG NNITVTAYAN GDHAVTVKDA K FIVGPMSS AWTPFDNKIV VYKGDVYNMD YPPFGAGRPG QFGDIQSRTP ESKDVYANTQ LVLQRPAAGT VHVPYSQAPS GF KYWLKER GASLQHTAPF GCQIATNPVR AVNCAVGNMP ISIDIPEAAF TRVVDAPSLT DMSCEVPACT HSSDFGGVAV IKY AASKKG KCAVHSMTNA VTIREAEIEV EGNSQLQISF STALASAEFR VQVCSTQVHC AAECHPPKDH IVNYPASHTT LGVQ DISAT AMSWVQKITG GVGLVVAVAA LILIVVLCVS FSRH

UniProtKB: Structural polyprotein

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Macromolecule #4: Structural polyprotein

MacromoleculeName: Structural polyprotein / type: protein_or_peptide / ID: 4 / Number of copies: 4 / Enantiomer: LEVO
Source (natural)Organism: Chikungunya virus
Molecular weightTheoretical: 46.909578 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString: NFNVYKATRP YLAHCPDCGE GHSCHSPVAL ERIRNEATDG TLKIQVSLQI GIKTDDSHDW TKLRYMDNHM PADAERAGLF VRTSAPCTI TGTMGHFILA RCPKGETLTV GFTDSRKISH SCTHPFHHDP PVIGREKFHS RPQHGKELPC STYVQSTAAT T EEIEVHMP ...String:
NFNVYKATRP YLAHCPDCGE GHSCHSPVAL ERIRNEATDG TLKIQVSLQI GIKTDDSHDW TKLRYMDNHM PADAERAGLF VRTSAPCTI TGTMGHFILA RCPKGETLTV GFTDSRKISH SCTHPFHHDP PVIGREKFHS RPQHGKELPC STYVQSTAAT T EEIEVHMP PDTPDRTLMS QQSGNVKITV NGQTVRYKCN CGGSNEGLTT TDKVINNCKV DQCHAAVTNH KKWQYNSPLV PR NAELGDR KGKIHIPFPL ANVTCRVPKA RNPTVTYGKN QVIMLLYPDH PTLLSYRNMG EEPNYQEEWV MHKKEVVLTV PTE GLEVTW GNNEPYKYWP QLSTNGTAHG HPHEIILYYY ELYPTMTVVV VSVASFVLLS MVGVAVGMCM CARRRCITPY ELTP GATVP FLLSLICCIR TAKA

UniProtKB: Structural polyprotein

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Macromolecule #5: CHIKV capsid protein

MacromoleculeName: CHIKV capsid protein / type: protein_or_peptide / ID: 5 / Number of copies: 4 / Enantiomer: LEVO / EC number: togavirin
Source (natural)Organism: Chikungunya virus
Molecular weightTheoretical: 16.428607 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
NDCIFEVKHE GKVTGYACLV GDKVMKPAHV KGTIDNADLA KLAFKRSSKY DLECAQIPVH MKSDASKFTH EKPEGYYNWH HGAVQYSGG RFTIPTGAGK PGDSGRPIFD NKGRVVAIVL GGANEGARTA LSVVTWNKDI VTKITPEGAE EW

UniProtKB: Structural polyprotein

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Macromolecule #12: CHOLESTEROL

MacromoleculeName: CHOLESTEROL / type: ligand / ID: 12 / Number of copies: 4 / Formula: CLR
Molecular weightTheoretical: 386.654 Da
Chemical component information

ChemComp-CLR:
CHOLESTEROL

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Experimental details

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Structure determination

Methodcryo EM
Processingsingle particle reconstruction
Aggregation stateparticle

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Sample preparation

BufferpH: 8
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeFEI TITAN KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 60.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 2.0 µm / Nominal defocus min: 1.0 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING ONLY
Startup modelType of model: PDB ENTRY
PDB model - PDB ID:

8fcg

Final reconstructionResolution.type: BY AUTHOR / Resolution: 3.3 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 559411
Initial angle assignmentType: ANGULAR RECONSTITUTION
Final angle assignmentType: ANGULAR RECONSTITUTION

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Atomic model buiding 1

Initial model
PDB IDChain

8fcg

source_name: PDB, initial_model_type: experimental model

6jo8

source_name: PDB, initial_model_type: experimental model
RefinementSpace: REAL / Protocol: RIGID BODY FIT
Output model

PDB-9iz9:
VLP structure of Chikungunya virus complexed with C37 Fab, 2f block.

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