4N44

Crystal structure of oxidized form of thiolase from Clostridium acetobutylicum

• PDB DOI: https://doi.org/10.2210/pdb4N44/pdb

• Classification: TRANSFERASE
• Organism(s): Clostridium acetobutylicum EA 2018
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2013-10-08 Released: 2014-10-08 
• Deposition Author(s): Kim, S., Ha, S.C., Ahn, J.W., Kim, E.J., Lim, J.H., Kim, K.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.77 Å
• R-Value Free: 0.208 
• R-Value Work: 0.168 
• R-Value Observed: 0.170 

Starting Model: experimental

Literature

Structural insight into redox-switch regulatory mechanism of thiolase from the n-butanol synthesizing bacterium, Clostridium acetobutylicum

Kim, S., Ha, S.C., Ahn, J.W., Kim, E.J., Lim, J.H., Son, H.C., Ryu, Y.S., Lee, S.K., Kim, K.J.

To be published.

Biological Assembly 1  

Global Symmetry: Dihedral - D2  (Explore in 3D)
Global Stoichiometry: Homo 4-mer - A4 

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

Macromolecule Content

• Total Structure Weight: 85.14 kDa 
• Atom Count: 6,249 
• Modelled Residue Count: 784 
• Deposited Residue Count: 800 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Acetyl-CoA acetyltransferase	A, B	400	Clostridium acetobutylicum EA 2018	Mutation(s): 0  Gene Names: CEA_G2880 EC: 2.3.1.9

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
GOL	G [auth B], H [auth B]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ACT	C [auth A], D [auth A], E [auth B], F [auth B]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.77 Å
• R-Value Free: 0.208 
• R-Value Work: 0.168 
• R-Value Observed: 0.170 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 203.227	α = 90
b = 53.987	β = 90
c = 72.968	γ = 90

Software Package:

Software Name	Purpose
DENZO	data reduction
SCALEPACK	data scaling
MOLREP	phasing
REFMAC	refinement
PDB_EXTRACT	data extraction
HKL-2000	data collection
HKL-2000	data reduction
HKL-2000	data scaling

Structure Validation

Entry History 

Deposition Data

• Released Date: 2014-10-08 
Deposition Author(s): Kim, S., Ha, S.C., Ahn, J.W., Kim, E.J., Lim, J.H., Kim, K.J.

Revision History  

• Version 1.0: 2014-10-08
  Type: Initial release
  
• Version 1.1: 2017-11-15
  Changes: Refinement description
• Version 1.2: 2023-11-08
  Changes: Data collection, Database references, Derived calculations, Refinement description
• Version 1.3: 2024-10-09
  Changes: Structure summary