3COW

Crystal Structure of Mycobacterium Tuberculosis Pantothenate Synthetase at 1.8 Ang resolution- in complex with sulphonamide inhibitor 2

• PDB DOI: https://doi.org/10.2210/pdb3COW/pdb

• Classification: LIGASE
• Organism(s): Mycobacterium tuberculosis
• Expression System: Escherichia coli
• Mutation(s): Yes 


• Deposited: 2008-03-29 Released: 2008-10-07 
• Deposition Author(s): Ciulli, A., Chirgadze, D.Y., Blundell, T.L., Abell, C.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.209 
• R-Value Work: 0.160 
• R-Value Observed: 0.162 

Starting Model: experimental

Literature

Inhibition of Mycobacterium tuberculosis pantothenate synthetase by analogues of the reaction intermediate.

Ciulli, A., Scott, D.E., Ando, M., Reyes, F., Saldanha, S.A., Tuck, K.L., Chirgadze, D.Y., Blundell, T.L., Abell, C.

(2008) Chembiochem 9: 2606-2611

• PubMed: 18821554 
• DOI: https://doi.org/10.1002/cbic.200800437
• Primary Citation of Related Structures:  
  3COV, 3COW, 3COY, 3COZ

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Organizational Affiliation: 

University Chemical Laboratory, University of Cambridge, Lensfield Road, Cambridge CB21EW, UK. [e-mail]

Biological Assembly 1  

Global Symmetry: Cyclic - C2  (Explore in 3D)
Global Stoichiometry: Homo 2-mer - A2 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 64.34 kDa 
• Atom Count: 4,744 
• Modelled Residue Count: 565 
• Deposited Residue Count: 602 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Pantothenate synthetase	A, B	301	Mycobacterium tuberculosis	Mutation(s): 2  Gene Names: panC EC: 6.3.2.1
UniProt
Find proteins for P9WIL5 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv)) Explore P9WIL5  Go to UniProtKB:  P9WIL5

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
52H	C [auth A], G [auth B]	5'-O-{[(2R)-2-hydroxy-3,3-dimethylbutanoyl]sulfamoyl}adenosine C16 H24 N6 O8 S XLQHUZMFAIRQAT-YEFHITBRSA-N
GOL	D [auth A], E [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
EOH	F [auth A], H [auth B]	ETHANOL C2 H6 O LFQSCWFLJHTTHZ-UHFFFAOYSA-N

Binding Affinity Annotations
ID	Source	Binding Affinity
52H	BindingDB:  3COW	Ki: 270 (nM) from 1 assay(s)
	PDBBind:  3COW	Kd: 125 (nM) from 1 assay(s)

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.80 Å
• R-Value Free: 0.209 
• R-Value Work: 0.160 
• R-Value Observed: 0.162 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 48.42	α = 90
b = 71.24	β = 99.46
c = 81.81	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
ADSC	data collection
DENZO	data reduction
SCALEPACK	data scaling
CCP4	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2008-10-07 
Deposition Author(s): Ciulli, A., Chirgadze, D.Y., Blundell, T.L., Abell, C.

Revision History  

• Version 1.0: 2008-10-07
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Non-polymer description, Version format compliance
• Version 1.2: 2021-10-20
  Changes: Database references, Derived calculations
• Version 1.3: 2023-08-30
  Changes: Data collection, Refinement description