Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

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

Macromolecule Content

• Total Structure Weight: 34.16 kDa 
• Atom Count: 2436 
• Residue Count: 306 
• Unique protein chains: 1

6XB2

Room temperature X-ray crystallography reveals catalytic cysteine in the SARS-CoV-2 3CL Mpro is highly reactive: Insights for enzyme mechanism and drug design

• DOI: 10.2210/pdb6XB2/pdb

• Classification: VIRAL PROTEIN, HYDROLASE
• Organism(s): Severe acute respiratory syndrome coronavirus 2
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2020-06-05 Released: 2020-06-17 
• Deposition Author(s): Kneller, D.W., Kovalevsky, A., Coates, L.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.257 
• R-Value Work: 0.196 
• R-Value Observed: 0.198 

Literature

Room temperature X-ray crystallography reveals catalytic cysteine in the SARS-CoV-2 3CL Mpro is highly reactive: Insights for enzyme mechanism and drug design

Kneller, D.W., Phillips, G., O'Neill, H.M., Tan, K., Joachimiak, A., Coates, L., Kovalevsky, A.

To be published.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
3C-like proteinase	A	306	Severe acute respiratory syndrome coronavirus 2	Mutation(s): 0  Gene Names: rep, 1a-1b EC: 3.4.22.69 (PDB Primary Data), 3.4.19.12 (UniProt), 3.4.22 (UniProt), 2.7.7.48 (UniProt), 3.6.4.12 (UniProt), 3.6.4.13 (UniProt), 3.1.13 (UniProt), 3.1 (UniProt), 2.1.1 (UniProt)
Find proteins for P0DTD1 (Severe acute respiratory syndrome coronavirus 2) Go to UniProtKB:  P0DTD1

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NEN	A	1-ETHYL-PYRROLIDINE-2,5-DIONE C6 H9 N O2 GHAZCVNUKKZTLG-UHFFFAOYSA-N
DMS	A	DIMETHYL SULFOXIDE C2 H6 O S IAZDPXIOMUYVGZ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.10 Å
• R-Value Free: 0.257 
• R-Value Work: 0.196 
• R-Value Observed: 0.198 
• Space Group: I 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45.292	α = 90
b = 54.636	β = 100.739
c = 115.157	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
CrysalisPro	data reduction
Aimless	data scaling
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2020-06-05 
• Released Date: 2020-06-17 
Deposition Author(s): Kneller, D.W., Kovalevsky, A., Coates, L.

Revision History 

• Version 1.0: 2020-06-17
  Type: Initial release