7LMC

Structure of SARS CoV-2 main protease shows simultaneous processing of its N- and C-terminii

• PDB DOI: https://doi.org/10.2210/pdb7LMC/pdb

• Classification: HYDROLASE
• Organism(s): Severe acute respiratory syndrome coronavirus 2
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2021-02-05 Released: 2021-04-14 
• Deposition Author(s): Gajiwala, K.S., Ferre, R.A., Liu, W., Ryan, K.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.98 Å
• R-Value Free: 0.288 
• R-Value Work: 0.208 
• R-Value Observed: 0.212 

Starting Model: experimental

Literature

SARS coronavirus-2 main protease dimer auto-processes N-terminus in cis and C-terminus in trans

Ferre, R.A., Liu, W., Ryan, K., Grodsky, N., Gajiwala, K.S.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B1 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

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

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

Biological Assembly Evidence: light scattering

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Hetero 3-mer - A2B1 Local Symmetry: Cyclic - C2  (Explore in 3D)
Local Stoichiometry: Homo 2-mer - A2 

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

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

Macromolecule Content

• Total Structure Weight: 136.41 kDa 
• Atom Count: 9,539 
• Modelled Residue Count: 1,235 
• Deposited Residue Count: 1,236 
• Unique protein chains: 2

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Non-structural protein 4 peptide	A [auth E], D [auth F]	6	Severe acute respiratory syndrome coronavirus 2	Mutation(s): 0  Gene Names: rep, 1a-1b
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2) Explore P0DTD1  Go to UniProtKB:  P0DTD1

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
3C-like proteinase	B [auth A], C [auth B], E [auth C], F [auth D]	306	Severe acute respiratory syndrome coronavirus 2	Mutation(s): 1  Gene Names: rep, 1a-1b EC: 3.4.22.69
UniProt
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2) Explore P0DTD1  Go to UniProtKB:  P0DTD1

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.98 Å
• R-Value Free: 0.288 
• R-Value Work: 0.208 
• R-Value Observed: 0.212 
• Space Group: P 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 62.77	α = 80.52
b = 66.3	β = 89.46
c = 80.26	γ = 70.55

Software Package:

Software Name	Purpose
BUSTER	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2021-04-14 
Deposition Author(s): Gajiwala, K.S., Ferre, R.A., Liu, W., Ryan, K.

Revision History  

• Version 1.0: 2021-04-14
  Type: Initial release
  
• Version 1.1: 2023-10-18
  Changes: Data collection, Database references, Refinement description
• Version 1.2: 2024-03-06
  Changes: Refinement description