8FOR

Crystal Structure of Kemp Eliminase KE70-core with bound transition state analogue

• PDB DOI: https://doi.org/10.2210/pdb8FOR/pdb

• Classification: LYASE
• Organism(s): Escherichia coli
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2023-01-03 Released: 2024-01-10 
• Deposition Author(s): Zarifi, N., Asthana, P., Fraser, J.S., Chica, R.A.
• Funding Organization(s): Natural Sciences and Engineering Research Council (NSERC, Canada), Canada Foundation for Innovation

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.236 
• R-Value Work: 0.208 
• R-Value Observed: 0.210 

Starting Model: experimental

Literature

Crystal Structure of Kemp Eliminase KE70-core with bound transition state analogue

Zarifi, N., Asthana, P., Fraser, J.S., Chica, R.A.

To be published.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Biological Assembly 2  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 2 assigned by authors.

Biological Assembly 3  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 3 assigned by authors.

Biological Assembly 4  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 4 assigned by authors.

Biological Assembly 5  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 5 assigned by authors.

Biological Assembly 6  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 6 assigned by authors.

Macromolecule Content

• Total Structure Weight: 173.3 kDa 
• Atom Count: 11,410 
• Modelled Residue Count: 1,488 
• Deposited Residue Count: 1,620 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Kemp Eliminase KE70-core	A, B, C, D, E, F	270	Escherichia coli	Mutation(s): 0
UniProt
Find proteins for P0A6L0 (Escherichia coli (strain K12)) Explore P0A6L0  Go to UniProtKB:  P0A6L0

Small Molecules

Ligands 1 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
6NT (Subject of Investigation/LOI)	G [auth A], H [auth B], I [auth C], J [auth D], K [auth E], L [auth F]	6-NITROBENZOTRIAZOLE C6 H4 N4 O2 AOCDQWRMYHJTMY-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.20 Å
• R-Value Free: 0.236 
• R-Value Work: 0.208 
• R-Value Observed: 0.210 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 52.789	α = 90
b = 155.642	β = 90
c = 190.588	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
Coot	model building
XDS	data reduction
Aimless	data scaling
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-01-10 
Deposition Author(s): Zarifi, N., Asthana, P., Fraser, J.S., Chica, R.A.

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Funding Organization	Location	Grant Number
Natural Sciences and Engineering Research Council (NSERC, Canada)	Canada	RGPIN-2016-04831
Canada Foundation for Innovation	Canada	26503

Revision History  

• Version 1.0: 2024-01-10
  Type: Initial release