9I4E | pdb_00009i4e

Structure of anti-EV71 human monoclonal antibody 34-1-6D Fab

• PDB DOI: https://doi.org/10.2210/pdb9I4E/pdb

• Classification: ANTIVIRAL PROTEIN
• Organism(s): Homo sapiens
• Expression System: Homo sapiens
• Mutation(s): No 


• Deposited: 2025-01-24 Released: 2026-02-04 
• Deposition Author(s): Zhou, D., Ren, J., Stuart, D.I.
• Funding Organization(s): Medical Research Council (MRC, United Kingdom), Wellcome Trust

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.63 Å
• R-Value Free: 
  0.209 (Depositor), 0.217 (DCC) 
• R-Value Work: 
  0.158 (Depositor), 0.170 (DCC) 
• R-Value Observed: 
  0.161 (Depositor) 

Starting Model: experimental

Literature

Fine antigenic mapping of human enterovirus 71 from structures of cognate complexes for a panel of 12 patient derived monoclonal antibodies

Zhou, D., Ren, J., Stuart, D.I.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 2-mer - A1B1 

Biological assembly 2 assigned by authors and generated by PISA (software)

Macromolecule Content 

• Total Structure Weight: 96.33 kDa 
• Atom Count: 7,339 
• Modeled Residue Count: 864 
• Deposited Residue Count: 890 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
light chain	A [auth L], C [auth B]	214	Homo sapiens	Mutation(s): 0

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
heavy chain	B [auth H], D [auth A]	231	Homo sapiens	Mutation(s): 0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
EDO (Subject of Investigation/LOI)	E [auth L], F [auth H], G [auth H], H, I [auth A], J [auth A], K [auth A], L [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.63 Å
• R-Value Free:  0.209 (Depositor), 0.217 (DCC) 
• R-Value Work:  0.158 (Depositor), 0.170 (DCC) 
• R-Value Observed: 0.161 (Depositor) 

Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.164	α = 86.69
b = 55.981	β = 86.39
c = 75.399	γ = 67.06

Software Package:

Software Name	Purpose
REFMAC	refinement
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2026-02-04 
Deposition Author(s): Zhou, D., Ren, J., Stuart, D.I.

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Funding Organization	Location	Grant Number
Medical Research Council (MRC, United Kingdom)	United Kingdom	--
Wellcome Trust	United Kingdom	--

Revision History  

• Version 1.0: 2026-02-04
  Type: Initial release