3E91 | pdb_00003e91

Crystal structure of SARS-CoV Mpro mutant in P21 at pH6.9

• PDB DOI: https://doi.org/10.2210/pdb3E91/pdb

• Classification: HYDROLASE
• Organism(s): Severe acute respiratory syndrome-related coronavirus
• Expression System: Escherichia coli BL21
• Mutation(s): Yes 


• Deposited: 2008-08-21 Released: 2009-08-25 
• Deposition Author(s): Shi, J.H., Jayaraman, S., Song, J.X.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.55 Å
• R-Value Free: 
  0.256 (Depositor), 0.250 (DCC) 
• R-Value Work: 
  0.179 (Depositor), 0.170 (DCC) 
• R-Value Observed: 
  0.186 (Depositor) 

Literature

Structural analysis of the activity-enhanced SARS-CoV Mpro C-terminal mutant

Shi, J.H., Jayaraman, S., Song, J.X.

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: 67.58 kDa 
• Atom Count: 4,780 
• Modeled Residue Count: 605 
• Deposited Residue Count: 612 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
3C-like proteinase	A, B	306	Severe acute respiratory syndrome-related coronavirus	Mutation(s): 3  EC: 3.4.22
UniProt
Find proteins for P0C6X7 (Severe acute respiratory syndrome coronavirus) Explore P0C6X7  Go to UniProtKB:  P0C6X7

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.55 Å
• R-Value Free:  0.256 (Depositor), 0.250 (DCC) 
• R-Value Work:  0.179 (Depositor), 0.170 (DCC) 
• R-Value Observed: 0.186 (Depositor) 

Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 51.523	α = 90
b = 96.323	β = 103.53
c = 67.711	γ = 90

Software Package:

Software Name	Purpose
d*TREK	data scaling
DENZO	data reduction
SCALEPACK	data scaling
PHASER	phasing
PHENIX	refinement
PDB_EXTRACT	data extraction
CrystalClear	data collection
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-08-25 
Deposition Author(s): Shi, J.H., Jayaraman, S., Song, J.X.

Revision History  

• Version 1.0: 2009-08-25
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Version format compliance
• Version 1.2: 2017-10-25
  Changes: Refinement description
• Version 1.3: 2021-11-10
  Changes: Database references
• Version 1.4: 2024-05-29
  Changes: Data collection