8I40

Crystal structure of ASCT from Trypanosoma brucei in complex with CoA.

• PDB DOI: https://doi.org/10.2210/pdb8I40/pdb

• Classification: ELECTRON TRANSPORT
• Organism(s): Trypanosoma brucei brucei TREU927
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2023-01-18 Released: 2024-01-31 
• Deposition Author(s): Mochizuki, K., Inaoka, D.K., Fukuda, K., Kurasawa, H., Iyoda, K., Nakai, U., Harada, S., Balogun, E.O., Mazet, M., Millerioux, Y., Bringaud, F., Boshart, M., Hirayama, K., Kita, K., Shiba, T.
• Funding Organization(s): Not funded

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.79 Å
• R-Value Free: 0.284 
• R-Value Work: 0.223 
• R-Value Observed: 0.226 

Literature

Crystal structure of ligand complexes of ASCT from Trypanosoma brucei and molecular mechanism in comparison with mammalian SCOT.

Mochizuki, K., Inaoka, D.K., Fukuda, K., Kurasawa, H., Iyoda, K., Nakai, U., Harada, S., Balogun, E.O., Mazet, M., Millerioux, Y., Bringaud, F., Boshart, M., Hirayama, K., Kita, K., Shiba, T.

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.

Biological Assembly Evidence: gel filtration

Macromolecule Content

• Total Structure Weight: 209.19 kDa 
• Atom Count: 14,198 
• Modelled Residue Count: 1,868 
• Deposited Residue Count: 1,932 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Succinyl-CoA:3-ketoacid-coenzyme A transferase	A, B, C, D	483	Trypanosoma brucei brucei TREU927	Mutation(s): 0  Gene Names: Tb11.02.0290 EC: 2.8.3.5
UniProt
Find proteins for Q386P1 (Trypanosoma brucei brucei (strain 927/4 GUTat10.1)) Explore Q386P1  Go to UniProtKB:  Q386P1

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
COA (Subject of Investigation/LOI)	E [auth A], I [auth C]	COENZYME A C21 H36 N7 O16 P3 S RGJOEKWQDUBAIZ-IBOSZNHHSA-N
ACT (Subject of Investigation/LOI)	F [auth A]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M
CA (Subject of Investigation/LOI)	G [auth A], H [auth B], J [auth C], K [auth D]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.79 Å
• R-Value Free: 0.284 
• R-Value Work: 0.223 
• R-Value Observed: 0.226 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 59.789	α = 90
b = 165.146	β = 90
c = 188.584	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
XDS	data scaling
MOLREP	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2024-01-31 
Deposition Author(s): Mochizuki, K., Inaoka, D.K., Fukuda, K., Kurasawa, H., Iyoda, K., Nakai, U., Harada, S., Balogun, E.O., Mazet, M., Millerioux, Y., Bringaud, F., Boshart, M., Hirayama, K., Kita, K., Shiba, T.

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Funding Organization	Location	Grant Number
Not funded		--

Revision History  

• Version 1.0: 2024-01-31
  Type: Initial release