9L7B | pdb_00009l7b

PEDV 3CLpro mutant (C144A) in complex with nsp13/14 peptite substrate

• PDB DOI: https://doi.org/10.2210/pdb9L7B/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Porcine epidemic diarrhea virus
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2024-12-26 Released: 2025-12-31 
• Deposition Author(s): Zhang, Y., Zhang, D., Shi, Y.J., Peng, G.Q.
• Funding Organization(s): National Natural Science Foundation of China (NSFC)

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.31 Å
• R-Value Free: 
  0.245 (Depositor), 0.245 (DCC) 
• R-Value Work: 
  0.193 (Depositor), 0.202 (DCC) 
• R-Value Observed: 
  0.197 (Depositor) 

Literature

PEDV 3CLpro mutant (C144A) in complex with nsp13/14 peptite substrate

Zhang, Y., Zhang, D., Shi, Y.J., Peng, G.Q.

To be published.

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Hetero 4-mer - A2B2 Pseudo Symmetry: Asymmetric - C1 
Pseudo Stoichiometry: Hetero 4-mer - A2B1C1 

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

Macromolecule Content 

• Total Structure Weight: 69.3 kDa 
• Atom Count: 4,624 
• Modeled Residue Count: 606 
• Deposited Residue Count: 632 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
ORF1ab polyprotein	A, B	310	Porcine epidemic diarrhea virus	Mutation(s): 1
UniProt
Find proteins for A0A023J7B5 (Porcine epidemic diarrhea virus) Explore A0A023J7B5  Go to UniProtKB:  A0A023J7B5

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
Replicase polyprotein 1ab	C [auth D], D [auth C]	6	Porcine epidemic diarrhea virus	Mutation(s): 0

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.31 Å
• R-Value Free:  0.245 (Depositor), 0.245 (DCC) 
• R-Value Work:  0.193 (Depositor), 0.202 (DCC) 
• R-Value Observed: 0.197 (Depositor) 

Space Group: H 3

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 174.74	α = 90
b = 174.74	β = 90
c = 59.63	γ = 120

Software Package:

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

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2025-12-31 
Deposition Author(s): Zhang, Y., Zhang, D., Shi, Y.J., Peng, G.Q.

---

Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History  

• Version 1.0: 2025-12-31
  Type: Initial release