7SFB

SARS-CoV-2 Main Protease (Mpro) in Complex with ML101

• PDB DOI: https://doi.org/10.2210/pdb7SFB/pdb

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


• Deposited: 2021-10-03 Released: 2022-10-05 
• Deposition Author(s): Westberg, M., Fernandez, D., Lin, M.Z.
• Funding Organization(s): Novo Nordisk Foundation, Other private

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.232 
• R-Value Work: 0.183 
• R-Value Observed: 0.186 

Starting Model: experimental

Literature

Rational design of a new class of protease inhibitors for the potential treatment of coronavirus diseases

Westberg, M., Su, Y., Zou, X., Rustagi, A., Beck, A., Ning, L., Fernandez, D., Blish, C., Lin, M.Z.

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)

Macromolecule Content

• Total Structure Weight: 34.55 kDa 
• Atom Count: 2,513 
• Modelled Residue Count: 301 
• Deposited Residue Count: 306 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
3C-like proteinase	A	306	Severe acute respiratory syndrome coronavirus 2	Mutation(s): 0  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

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
90U (Subject of Investigation/LOI)	B [auth A]	benzyl (1R,2S,5S)-2-({(2S,3R)-4-amino-3-hydroxy-4-oxo-1-[(3S)-2-oxopyrrolidin-3-yl]butan-2-yl}carbamoyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-3-carboxylate C24 H32 N4 O6 QQHOBZCFMWFGGP-KOUJMVCDSA-N
PGE	C [auth A]	TRIETHYLENE GLYCOL C6 H14 O4 ZIBGPFATKBEMQZ-UHFFFAOYSA-N
PEG	D [auth A]	DI(HYDROXYETHYL)ETHER C4 H10 O3 MTHSVFCYNBDYFN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.90 Å
• R-Value Free: 0.232 
• R-Value Work: 0.183 
• R-Value Observed: 0.186 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 45.054	α = 90
b = 63.91	β = 90
c = 105.77	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
SCALA	data scaling
PHASER	phasing
PDB_EXTRACT	data extraction

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2022-10-05 
Deposition Author(s): Westberg, M., Fernandez, D., Lin, M.Z.

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Funding Organization	Location	Grant Number
Novo Nordisk Foundation		NNF18OC0031816
Other private		--

Revision History  

• Version 1.0: 2022-10-05
  Type: Initial release
  
• Version 1.1: 2023-10-18
  Changes: Data collection, Refinement description
• Version 1.2: 2024-11-13
  Changes: Structure summary