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- PDB-8yeh: HPV16 L1 pentamer in complex with Fab F5-196 -

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Basic information

Entry
Database: PDB / ID: 8yeh
TitleHPV16 L1 pentamer in complex with Fab F5-196
Components
  • Major capsid protein L1
  • heavy chain of F5-196
  • light chain of F5-196
KeywordsVIRAL PROTEIN/IMMUNE SYSTEM / HPV16 / L1 / antibody / VIRAL PROTEIN / VIRAL PROTEIN-IMMUNE SYSTEM complex
Function / homology
Function and homology information


T=7 icosahedral viral capsid / endocytosis involved in viral entry into host cell / virion attachment to host cell / host cell nucleus / structural molecule activity
Similarity search - Function
Major capsid L1 (late) protein, Papillomavirus / Major capsid L1 (late) superfamily, Papillomavirus / L1 (late) protein / Double-stranded DNA virus, group I, capsid
Similarity search - Domain/homology
Major capsid protein L1
Similarity search - Component
Biological speciesHomo sapiens (human)
Human papillomavirus type 16
MethodELECTRON MICROSCOPY / single particle reconstruction / cryo EM / Resolution: 2.86 Å
AuthorsWang, X. / Fu, W.
Funding support1items
OrganizationGrant numberCountry
Not funded
CitationJournal: NPJ Vaccines / Year: 2025
Title: Establishing a universal IVRP method for quadrivalent HPV vaccines to replace in vivo potency tests.
Authors: Jinpan Hu / Zijing Jia / Meng Wang / Lingling Nie / Wangjun Fu / Qingfeng Zhang / Haiyang Qin / Jianhui Nie / Xiaoyu Xu / Lingjie Xu / Fengze Wang / Yingping Chen / Bo Xing / Tao Li / ...Authors: Jinpan Hu / Zijing Jia / Meng Wang / Lingling Nie / Wangjun Fu / Qingfeng Zhang / Haiyang Qin / Jianhui Nie / Xiaoyu Xu / Lingjie Xu / Fengze Wang / Yingping Chen / Bo Xing / Tao Li / Danfeng Li / Shaowei Li / Ningshao Xia / Xiangxi Wang / Weijin Huang /
Abstract: Several human papillomavirus (HPV) L1-based virus-like particle (VLP) vaccines are in development to meet future global vaccination needs. Type-specific monoclonal antibodies with good reactivity to ...Several human papillomavirus (HPV) L1-based virus-like particle (VLP) vaccines are in development to meet future global vaccination needs. Type-specific monoclonal antibodies with good reactivity to all types of vaccines are urgently needed to evaluate vaccine potency. In this study, binding activity, neutralizing activity, conformational sensitivity, immunodominance in human serum, and versatility were compared among antibodies. A broad-spectrum binding antibody (C4-F5-127) was selected as the capture antibody; four type-specific neutralizing antibodies (6-F5-77, 11-F5-187, 16-F5-196, and 18-F5-203) were selected as detection antibodies for HPV6, 11, 16, and 18, respectively. These antibodies formed a standardized and universal in vitro relative potency (IVRP) assay kit. High-resolution cryo-electron microscopy (cryo-EM) structures of HPV6-6-F5-77, HPV11-11-F5-187, HPV16-16-F5-196 and HPV18-18-F5-203 complexes define the location and nature of epitopes, revealing serotype specific binding modes and neutralization mechanisms. The IVRP results were correlated with potency data from mouse models, offering an efficient alternative to in vivo potency experiments.
History
DepositionFeb 22, 2024Deposition site: PDBJ / Processing site: PDBJ
Revision 1.0Feb 26, 2025Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2025Data content type: EM metadata / Data content type: EM metadata / Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2025Data content type: Half map / Part number: 1 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2025Data content type: Half map / Part number: 2 / Data content type: Half map / Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2025Data content type: Image / Data content type: Image / Provider: repository / Type: Initial release
Revision 1.0Feb 26, 2025Data content type: Primary map / Data content type: Primary map / Provider: repository / Type: Initial release
Revision 1.1Sep 10, 2025Group: Data collection / Database references / Category: citation / citation_author / em_admin
Item: _citation.country / _citation.journal_abbrev ..._citation.country / _citation.journal_abbrev / _citation.journal_id_CSD / _citation.journal_id_ISSN / _citation.journal_volume / _citation.page_first / _citation.page_last / _citation.pdbx_database_id_DOI / _citation.pdbx_database_id_PubMed / _citation.title / _citation.year / _em_admin.last_update

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Structure visualization

Structure viewerMolecule:
MolmilJmol/JSmol

Downloads & links

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Assembly

Deposited unit
A: heavy chain of F5-196
B: light chain of F5-196
F: Major capsid protein L1
C: heavy chain of F5-196
H: light chain of F5-196
L: Major capsid protein L1
D: heavy chain of F5-196
I: light chain of F5-196
M: Major capsid protein L1
E: heavy chain of F5-196
J: light chain of F5-196
N: Major capsid protein L1
G: heavy chain of F5-196
K: light chain of F5-196
O: Major capsid protein L1


Theoretical massNumber of molelcules
Total (without water)378,43015
Polymers378,43015
Non-polymers00
Water00
1


  • Idetical with deposited unit
  • defined by author
  • Evidence: electron microscopy, not applicable
TypeNameSymmetry operationNumber
identity operation1_5551

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Components

#1: Antibody
heavy chain of F5-196


Mass: 13345.870 Da / Num. of mol.: 5
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human)
#2: Antibody
light chain of F5-196


Mass: 11692.977 Da / Num. of mol.: 5
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Homo sapiens (human) / Cell line (production host): HEK293 / Production host: Homo sapiens (human)
#3: Protein
Major capsid protein L1


Mass: 50647.133 Da / Num. of mol.: 5
Source method: isolated from a genetically manipulated source
Source: (gene. exp.) Human papillomavirus type 16 / Gene: L1 / Production host: Escherichia coli (E. coli) / References: UniProt: A0A161H2J5
Has protein modificationY

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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
IDNameTypeEntity IDParent-IDSource
1HPV16 L1 pentamer in complex with Fab F5-196COMPLEXall0RECOMBINANT
2FabF5-196COMPLEX#1-#21RECOMBINANT
3HPV16 L1 pentamerCOMPLEX#31RECOMBINANT
Source (natural)
IDEntity assembly-IDOrganismNcbi tax-ID
23Human papillomavirus 16333760
32Homo sapiens (human)9606
Source (recombinant)
IDEntity assembly-IDOrganismNcbi tax-ID
23Escherichia coli (E. coli)562
32Homo sapiens (human)9606
Buffer solutionpH: 7.4
SpecimenEmbedding applied: NO / Shadowing applied: NO / Staining applied: NO / Vitrification applied: YES
VitrificationCryogen name: ETHANE

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Electron microscopy imaging

Experimental equipment
Model: Titan Krios / Image courtesy: FEI Company
MicroscopyModel: FEI TITAN KRIOS
Electron gunElectron source: FIELD EMISSION GUN / Accelerating voltage: 300 kV / Illumination mode: FLOOD BEAM
Electron lensMode: DARK FIELD / Nominal defocus max: 1800 nm / Nominal defocus min: 1200 nm
Image recordingElectron dose: 50 e/Å2 / Film or detector model: GATAN K3 (6k x 4k)

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Processing

CTF correctionType: NONE
3D reconstructionResolution: 2.86 Å / Resolution method: FSC 0.143 CUT-OFF / Num. of particles: 498615 / Symmetry type: POINT

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