7WQB

SARS-CoV-2 main protease mutant (P168A) in complex with MG-132

• PDB DOI: https://doi.org/10.2210/pdb7WQB/pdb

• Classification: VIRAL PROTEIN
• Organism(s): Severe acute respiratory syndrome coronavirus 2
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): Yes 


• Deposited: 2022-01-25 Released: 2023-08-02 
• Deposition Author(s): Wang, Y.C., Yang, C.S., Hou, M.H., Tsai, C.L., Chen, Y.
• Funding Organization(s): Ministry of Science and Technology (MoST, Taiwan)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.87 Å
• R-Value Free: 0.228 
• R-Value Work: 0.188 
• R-Value Observed: 0.192 

Literature

SARS-CoV-2 main protease mutant (P168A) in complex with MG-132

Wang, Y.C., Yang, C.S., Hou, M.H., Tsai, C.L., Chen, Y.

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 and generated by PISA (software)

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 34.36 kDa 
• Atom Count: 2,554 
• Modelled Residue Count: 300 
• Deposited Residue Count: 307 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
3C-like proteinase nsp5	A	307	Severe acute respiratory syndrome coronavirus 2	Mutation(s): 1  EC: 3.4.22.69
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2) Explore P0DTD1  Go to UniProtKB:  P0DTD1

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
ALD (Subject of Investigation/LOI)	B [auth A]	N-[(benzyloxy)carbonyl]-L-leucyl-N-[(2S)-1-hydroxy-4-methylpentan-2-yl]-L-leucinamide C26 H43 N3 O5 WUJQMWDTZKIKQZ-VABKMULXSA-N
MG	C [auth A]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_001210 (ALD)	B [auth A]	PHQ-Leu-Leu-Leu-aldehyde MG-132, bound form	Peptide-like / Inhibitor

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.87 Å
• R-Value Free: 0.228 
• R-Value Work: 0.188 
• R-Value Observed: 0.192 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 113.977	α = 90
b = 53.483	β = 101.641
c = 45.408	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
HKL-2000	data reduction
HKL-2000	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-08-02 
Deposition Author(s): Wang, Y.C., Yang, C.S., Hou, M.H., Tsai, C.L., Chen, Y.

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Funding Organization	Location	Grant Number
Ministry of Science and Technology (MoST, Taiwan)	Taiwan	109-2311-B241-001

Revision History  

• Version 1.0: 2023-08-02
  Type: Initial release