8USF

Crystal Structure of Kemp Eliminase HG649 with bound transition state analogue, 280 K

• PDB DOI: https://doi.org/10.2210/pdb8USF/pdb

• Classification: HYDROLASE
• Organism(s): Thermoascus aurantiacus
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2023-10-27 Released: 2023-12-06 
• Deposition Author(s): Seifinoferest, B.
• Funding Organization(s): Canada Foundation for Innovation, Natural Sciences and Engineering Research Council (NSERC, Canada), Human Frontier Science Program (HFSP), Department of Energy (DOE, United States)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 0.157 
• R-Value Work: 0.137 
• R-Value Observed: 0.138 

Literature

Harnessing the conformational ensemble to design efficient artificial enzymes

Rakotoharisoa, R.V., Seifinoferest, B., Zarifi, N., Miller, J.D.M., Rodriguez, J.M., Thompson, M.C., 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.

Macromolecule Content

• Total Structure Weight: 69.13 kDa 
• Atom Count: 6,032 
• Modelled Residue Count: 602 
• Deposited Residue Count: 636 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Kemp eliminase	A, B	318	Thermoascus aurantiacus	Mutation(s): 0
UniProt
Find proteins for P23360 (Thermoascus aurantiacus) Explore P23360  Go to UniProtKB:  P23360

Small Molecules

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

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.45 Å
• R-Value Free: 0.157 
• R-Value Work: 0.137 
• R-Value Observed: 0.138 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 51.072	α = 90
b = 77.465	β = 105.276
c = 93.811	γ = 90

Software Package:

Software Name	Purpose
xia2	data reduction
DIALS	data reduction
Aimless	data scaling
Coot	model building
PHASER	phasing
PHENIX	refinement

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2023-12-06 
Deposition Author(s): Seifinoferest, B.

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Funding Organization	Location	Grant Number
Canada Foundation for Innovation	Canada	--
Natural Sciences and Engineering Research Council (NSERC, Canada)	Canada	--
Human Frontier Science Program (HFSP)	France	--
Department of Energy (DOE, United States)	United States	--

Revision History  

• Version 1.0: 2023-12-06
  Type: Initial release