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- EMDB-48508: Complex of FMDV Asia1/JS/05 and porcine-derived neutralizing mono... -

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Entry
Database: EMDB / ID: EMD-48508
TitleComplex of FMDV Asia1/JS/05 and porcine-derived neutralizing monoclonal antibody PAS12
Map data
Sample
  • Complex: Complex of FMDV Asia1/JS/05 and porcine-derived neutralizing monoclonal antibody PAS12
    • Complex: porcine-derived neutralizing monoclonal antibody PAS12
      • Protein or peptide: PAS12 Fv Heavy chain
      • Protein or peptide: PAS12 Fv Light chain
    • Virus: Foot-and-mouth disease virus Asia 1
      • Protein or peptide: Capsid protein VP1
      • Protein or peptide: Capsid protein VP2
      • Protein or peptide: Capsid protein VP3
      • Protein or peptide: Capsid protein VP4
KeywordsFoot-and-mouth disease virus Asia1 / Sus scrofa / VIRUS/IMMUNE SYSTEM / VIRUS / VIRUS-IMMUNE SYSTEM complex
Function / homology
Function and homology information


L-peptidase / symbiont-mediated perturbation of host chromatin organization / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / ribonucleoside triphosphate phosphatase activity / nucleoside-triphosphate phosphatase / regulation of translation / channel activity / monoatomic ion transmembrane transport ...L-peptidase / symbiont-mediated perturbation of host chromatin organization / picornain 3C / T=pseudo3 icosahedral viral capsid / host cell cytoplasmic vesicle membrane / ribonucleoside triphosphate phosphatase activity / nucleoside-triphosphate phosphatase / regulation of translation / channel activity / monoatomic ion transmembrane transport / clathrin-dependent endocytosis of virus by host cell / RNA helicase activity / viral protein processing / host cell endoplasmic reticulum membrane / RNA-directed RNA polymerase / cysteine-type endopeptidase activity / viral RNA genome replication / RNA-directed RNA polymerase activity / DNA-templated transcription / virion attachment to host cell / host cell nucleus / structural molecule activity / proteolysis / RNA binding / ATP binding / membrane
Similarity search - Function
Peptidase C28, foot-and-mouth virus L-proteinase / Foot-and-mouth virus L-proteinase / Aphthovirus leader protease (L(pro)) domain profile. / Foot-and-mouth disease virus VP1 coat / Capsid protein VP4, Picornavirus / Viral protein VP4 subunit / Capsid protein VP4 superfamily, Picornavirus / Helicase/polymerase/peptidase polyprotein, Calicivirus-type / Picornavirus coat protein / Papain-like cysteine peptidase superfamily ...Peptidase C28, foot-and-mouth virus L-proteinase / Foot-and-mouth virus L-proteinase / Aphthovirus leader protease (L(pro)) domain profile. / Foot-and-mouth disease virus VP1 coat / Capsid protein VP4, Picornavirus / Viral protein VP4 subunit / Capsid protein VP4 superfamily, Picornavirus / Helicase/polymerase/peptidase polyprotein, Calicivirus-type / Picornavirus coat protein / Papain-like cysteine peptidase superfamily / Peptidase C3A/C3B, picornaviral / 3C cysteine protease (picornain 3C) / Picornavirales 3C/3C-like protease domain / Picornavirales 3C/3C-like protease domain profile. / Picornavirus capsid / picornavirus capsid protein / Helicase, superfamily 3, single-stranded RNA virus / Superfamily 3 helicase of positive ssRNA viruses domain profile. / Helicase, superfamily 3, single-stranded DNA/RNA virus / RNA helicase / Picornavirus/Calicivirus coat protein / Viral coat protein subunit / Reverse transcriptase/Diguanylate cyclase domain / RNA-directed RNA polymerase, C-terminal domain / Viral RNA-dependent RNA polymerase / RNA-directed RNA polymerase, catalytic domain / RdRp of positive ssRNA viruses catalytic domain profile. / Peptidase S1, PA clan, chymotrypsin-like fold / Peptidase S1, PA clan / DNA/RNA polymerase superfamily / P-loop containing nucleoside triphosphate hydrolase
Similarity search - Domain/homology
Biological speciesSus scrofa (pig) / Foot-and-mouth disease virus Asia 1
Methodsingle particle reconstruction / cryo EM / Resolution: 2.14 Å
AuthorsWu S / Lei D
Funding support China, 5 items
OrganizationGrant numberCountry
National Natural Science Foundation of China (NSFC)32373028 China
National Natural Science Foundation of China (NSFC)32171300 China
National Natural Science Foundation of China (NSFC)32072873 China
Other government2021YFD1800304
Other governmentlzujbky-2021-ct05
CitationJournal: PLoS Pathog / Year: 2026
Title: Porcine B cell receptor repertoire uncovers balanced recognition of antigenic structures on serotype Asia1 foot-and-mouth disease virus.
Authors: Shulun Huang / Shanquan Wu / Fengjuan Li / Pinghua Li / Pu Sun / Yimei Cao / Huifang Bao / Kaiheng Dong / Jiaxin Yang / Hehe Zhang / Qiongqiong Zhao / Ying Sun / Dong Li / Xingwen Bai / ...Authors: Shulun Huang / Shanquan Wu / Fengjuan Li / Pinghua Li / Pu Sun / Yimei Cao / Huifang Bao / Kaiheng Dong / Jiaxin Yang / Hehe Zhang / Qiongqiong Zhao / Ying Sun / Dong Li / Xingwen Bai / Yuanfang Fu / Hong Yuan / Xueqing Ma / Zhixun Zhao / Jing Zhang / Jian Wang / Zaixin Liu / Yong Peng / Kun Li / Jinlian Hua / Zengjun Lu / Dongsheng Lei / Qiang Zhang /
Abstract: Of the seven serotypes of foot-and-mouth disease virus (FMDV) strains circulating globally, serotype Asia1 has been effectively eradicated in China through systematic vaccination in livestock. The ...Of the seven serotypes of foot-and-mouth disease virus (FMDV) strains circulating globally, serotype Asia1 has been effectively eradicated in China through systematic vaccination in livestock. The structural characteristics of serotype Asia1 may enhance its immunogenicity compared to other serotypes. Herein, we present a preliminary exploration of Asia1-binding B-cell receptor repertoire, containing 3571 clones, and identified 17 porcine-derived neutralizing monoclonal antibodies (pnAbs) from the top 33 high-frequency clonotypes. The majority of pnAbs (14/17) recognized the epitopes on VP2, with a common determinant at residue 72 (D) on the B-C loop; two pnAbs (2/17) recognized a novel epitope spanning VP2 and VP3; and the remaining one (1/17) bound to the C-terminus of VP1. Furthermore, the antigenic structures on VP2 and spanning VP2 and VP3 were respectively elucidated by determining the cryo-EM structures of FMDV serotype Asia1 in complexes with two pnAbs, PAS5 and PAS12. The light chain of PAS5, forming the majority of contact sites with the viral particle, focuses on the βB, B-C loop, βC and H-I loop of VP2, with key determinants at residues 68, 72 and 77 around the three-fold axis, corresponding to antigenic site 2. The contact sites of both VH and VL of PAS12 uncover a novel antigenic structure comprising the B-C, and H-I loops on VP2, and the B-B knob and βB on VP3, with key determinants at residue 73 on VP2 and 59 on VP3. Subsequently, site-directed competitive ELISA analysis of sera from primary and booster vaccinated pigs revealed a balanced antibody response profile, suggesting a potentially even immunodominance among antigenic site 2, VP1 G-H loop, and the novel antigenic structure spanning VP2 and VP3 on FMDV serotype Asia1. Compared to the focused immunodominance observed in other serotypes, this balanced antigenic recognition across VP1, VP2, and VP3 of FMDV serotype Asia1 reflects a diversified antibody response that may contribute to effective neutralization and protection.
History
DepositionJan 1, 2025-
Header (metadata) releaseJan 21, 2026-
Map releaseJan 21, 2026-
UpdateFeb 18, 2026-
Current statusFeb 18, 2026Processing site: RCSB / Status: Released

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Structure visualization

Supplemental images

emd_48508.png

Downloads & links

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Map

FileDownload / File: emd_48508.map.gz / Format: CCP4 / Size: 421.9 MB / Type: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
Projections & slices

Image control

Size
Brightness
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AxesZ (Sec.)Y (Row.)X (Col.)
0.97 Å/pix.
x 480 pix.
= 465.36 Å		0.97 Å/pix.
x 480 pix.
= 465.36 Å		0.97 Å/pix.
x 480 pix.
= 465.36 Å

Surface

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Images are generated by Spider.

Voxel sizeX=Y=Z: 0.9695 Å
Density

Histogram

Histogram (log scale)
Contour LevelBy AUTHOR: 7.0
Minimum - Maximum-1.1257359 - 25.595388
Average (Standard dev.)0.25980148 (±1.6735692)
SymmetrySpace group: 1
Details

EMDB XML:

Map geometry
Axis orderXYZ
Origin000
Dimensions480480480
Spacing480480480
CellA=B=C: 465.36002 Å
α=β=γ: 90.0 °

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Supplemental data

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Mask #1

Fileemd_48508_msk_1.map
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Half map: #1

Fileemd_48508_half_map_1.map
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Half map: #2

Fileemd_48508_half_map_2.map
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Sample components

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Entire : Complex of FMDV Asia1/JS/05 and porcine-derived neutralizing mono...

EntireName: Complex of FMDV Asia1/JS/05 and porcine-derived neutralizing monoclonal antibody PAS12
Components
  • Complex: Complex of FMDV Asia1/JS/05 and porcine-derived neutralizing monoclonal antibody PAS12
    • Complex: porcine-derived neutralizing monoclonal antibody PAS12
      • Protein or peptide: PAS12 Fv Heavy chain
      • Protein or peptide: PAS12 Fv Light chain
    • Virus: Foot-and-mouth disease virus Asia 1
      • Protein or peptide: Capsid protein VP1
      • Protein or peptide: Capsid protein VP2
      • Protein or peptide: Capsid protein VP3
      • Protein or peptide: Capsid protein VP4

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Supramolecule #1: Complex of FMDV Asia1/JS/05 and porcine-derived neutralizing mono...

SupramoleculeName: Complex of FMDV Asia1/JS/05 and porcine-derived neutralizing monoclonal antibody PAS12
type: complex / ID: 1 / Parent: 0 / Macromolecule list: all

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Supramolecule #3: porcine-derived neutralizing monoclonal antibody PAS12

SupramoleculeName: porcine-derived neutralizing monoclonal antibody PAS12
type: complex / ID: 3 / Parent: 1 / Macromolecule list: #5-#6
Source (natural)Organism: Sus scrofa (pig)

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Supramolecule #2: Foot-and-mouth disease virus Asia 1

SupramoleculeName: Foot-and-mouth disease virus Asia 1 / type: virus / ID: 2 / Parent: 1 / Macromolecule list: #1-#4 / NCBI-ID: 110195 / Sci species name: Foot-and-mouth disease virus Asia 1 / Virus type: VIRION / Virus isolate: OTHER / Virus enveloped: No / Virus empty: No

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Macromolecule #1: Capsid protein VP1

MacromoleculeName: Capsid protein VP1 / type: protein_or_peptide / ID: 1 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Foot-and-mouth disease virus Asia 1
Molecular weightTheoretical: 23.471611 KDa
Recombinant expressionOrganism: Mesocricetus auratus (golden hamster)
SequenceString: TTTTGESADP VTTTVENYGG ETQTARRLHT DVAFVLDRFV KLTQPKSTQT LDLMQIPSHT LVGALLRSAT YYFSDLEVAL VHTGPVTWV PNGAPKTALN NHTNPTAYQK QPITRLALPY TAPHRVLSTV YNGKTTYGEE SSRRGDLAAL ARRVNNRLPT S FNYGAVKA ...String:
TTTTGESADP VTTTVENYGG ETQTARRLHT DVAFVLDRFV KLTQPKSTQT LDLMQIPSHT LVGALLRSAT YYFSDLEVAL VHTGPVTWV PNGAPKTALN NHTNPTAYQK QPITRLALPY TAPHRVLSTV YNGKTTYGEE SSRRGDLAAL ARRVNNRLPT S FNYGAVKA DTITELLIRM KRAETYCPRP LLALDTTQDR RKQKIIAPEK QTL

UniProtKB: Genome polyprotein

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Macromolecule #2: Capsid protein VP2

MacromoleculeName: Capsid protein VP2 / type: protein_or_peptide / ID: 2 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Foot-and-mouth disease virus Asia 1
Molecular weightTheoretical: 24.471596 KDa
Recombinant expressionOrganism: Mesocricetus auratus (golden hamster)
SequenceString: DKKTEETTLL EDRILTTRNG HTTSTTQSSV GVTYGYAVAE DAVSGPNTSG LETRVTQAER FFKKHLFDWT PDLSFGHCHY LELPSEHKG VFGSLMSSYA YMRNGWDIEV TAVGNQFNGG CLLVALVPEL KELDTRQKYQ LTLFPHQFIN PRTNMTAHIN V PYVGVNRY ...String:
DKKTEETTLL EDRILTTRNG HTTSTTQSSV GVTYGYAVAE DAVSGPNTSG LETRVTQAER FFKKHLFDWT PDLSFGHCHY LELPSEHKG VFGSLMSSYA YMRNGWDIEV TAVGNQFNGG CLLVALVPEL KELDTRQKYQ LTLFPHQFIN PRTNMTAHIN V PYVGVNRY DQYELHKPWT LVVMVVAPLT VKTGGSEQIK VYMNAAPTYV HVAGELPSKE

UniProtKB: Genome polyprotein

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Macromolecule #3: Capsid protein VP3

MacromoleculeName: Capsid protein VP3 / type: protein_or_peptide / ID: 3 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Foot-and-mouth disease virus Asia 1
Molecular weightTheoretical: 23.845801 KDa
Recombinant expressionOrganism: Mesocricetus auratus (golden hamster)
SequenceString: GIVPVACVDG YGNMVTTDPK TADPVYGKVS NPPRTSFPGR FTNFLDVAEA CPTFLRFGEV PFVKTVNSGD RLLAKFDVSL AAGHMSNTY LAGLAQYYTQ YSGTMNIHFM FTGPTDAKAR YMVAYIPPGM TPPTDPERAA HCIHSEWDTG LNSKFTFSIP Y LSAADYAY ...String:
GIVPVACVDG YGNMVTTDPK TADPVYGKVS NPPRTSFPGR FTNFLDVAEA CPTFLRFGEV PFVKTVNSGD RLLAKFDVSL AAGHMSNTY LAGLAQYYTQ YSGTMNIHFM FTGPTDAKAR YMVAYIPPGM TPPTDPERAA HCIHSEWDTG LNSKFTFSIP Y LSAADYAY TASDVAETTS VQGWVCIYQI THGKAEGDAL VVSVSAGKDF EFRLPVDARQ Q

UniProtKB: Genome polyprotein

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Macromolecule #4: Capsid protein VP4

MacromoleculeName: Capsid protein VP4 / type: protein_or_peptide / ID: 4 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Foot-and-mouth disease virus Asia 1
Molecular weightTheoretical: 8.789116 KDa
Recombinant expressionOrganism: Mesocricetus auratus (golden hamster)
SequenceString:
GAGQSSPATG SQNQSGNTGS IINNYYMQQY QNSMDTQLGD NAISGGSNEG STDTTSTHTN NTQNNDWFSR LASSAFGGLF GALLA

UniProtKB: Genome polyprotein

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Macromolecule #5: PAS12 Fv Heavy chain

MacromoleculeName: PAS12 Fv Heavy chain / type: protein_or_peptide / ID: 5 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Sus scrofa (pig)
Molecular weightTheoretical: 13.321924 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
EEKLVESGGG LVQPGGSLRL SCVGSGFTFG GTYINWVRQI PGKGLEWLAT ISISGGVTYY GDSVKGRFTV SSDVSQNTAY LQMNSLRTE DTARYYCARG LSVGYCYEGC RMNLWGPGVE VVVSS

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Macromolecule #6: PAS12 Fv Light chain

MacromoleculeName: PAS12 Fv Light chain / type: protein_or_peptide / ID: 6 / Number of copies: 1 / Enantiomer: LEVO
Source (natural)Organism: Sus scrofa (pig)
Molecular weightTheoretical: 13.436797 KDa
Recombinant expressionOrganism: Homo sapiens (human)
SequenceString:
QTVIQEPAMS VSPGGTVTLT CAFRSGSVTI MNYPSWFQQT PGQPPRQLIY STKNRPTGVP SRFSGAISEN KAALTITGAQ AEDEADYFC GLYKGSNNIF GGGTHLTVLD YKDDDDKGGH HHHHH

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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: 7.2
VitrificationCryogen name: ETHANE

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Electron microscopy

MicroscopeTFS KRIOS
Image recordingFilm or detector model: GATAN K3 BIOQUANTUM (6k x 4k) / Average electron dose: 30.0 e/Å2
Electron beamAcceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
Electron opticsIllumination mode: FLOOD BEAM / Imaging mode: BRIGHT FIELD / Nominal defocus max: 1.8 µm / Nominal defocus min: 0.8 µm
Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company

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Image processing

CTF correctionType: PHASE FLIPPING AND AMPLITUDE CORRECTION
Startup modelType of model: NONE
Final reconstructionApplied symmetry - Point group: I (icosahedral) / Resolution.type: BY AUTHOR / Resolution: 2.14 Å / Resolution method: FSC 0.143 CUT-OFF / Number images used: 17484
Initial angle assignmentType: MAXIMUM LIKELIHOOD
Final angle assignmentType: MAXIMUM LIKELIHOOD
FSC plot (resolution estimation)

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