8CNX

Structure of Enterovirus D68 3C protease

• PDB DOI: https://doi.org/10.2210/pdb8CNX/pdb

• Classification: ANTIVIRAL PROTEIN
• Organism(s): Enterovirus
• Expression System: Escherichia coli BL21
• Mutation(s): No 


• Deposited: 2023-02-24 Released: 2023-04-05 
• Deposition Author(s): Lithgo, R.M., Fairhead, M., Koekemoer, L., Aschenbrenner, J.C., Balcomb, B.H., Godoy, A.S., Marples, P.G., Ni, X., Tomlinson, C.W.E., Wild, C., Fearon, D., Walsh, M.A., von Delft, F.
• Funding Organization(s): National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.49 Å
• R-Value Free: 0.220 
• R-Value Work: 0.204 

Starting Model: experimental

Literature

Structure of EV D68 3C protease

Lithgo, R.M., von Delft, F.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 42.63 kDa 
• Atom Count: 3,163 
• Modelled Residue Count: 362 
• Deposited Residue Count: 382 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Protease 3C	A, B	191	Enterovirus	Mutation(s): 0  EC: 3.4.22.28
UniProt
Find proteins for Q68T42 (Human enterovirus D68) Explore Q68T42  Go to UniProtKB:  Q68T42

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.49 Å
• R-Value Free: 0.220 
• R-Value Work: 0.204 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 42.82	α = 90
b = 62.53	β = 90
c = 147.36	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
xia2	data reduction
xia2	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-04-05 
Deposition Author(s): Lithgo, R.M., Fairhead, M., Koekemoer, L., Aschenbrenner, J.C., Balcomb, B.H., Godoy, A.S., Marples, P.G., Ni, X., Tomlinson, C.W.E., Wild, C., Fearon, D., Walsh, M.A., von Delft, F.

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Funding Organization	Location	Grant Number
National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)	United States	U19AI171399

Revision History  

• Version 1.0: 2023-04-05
  Type: Initial release
  
• Version 1.1: 2024-06-19
  Changes: Data collection