2WTA

Acinetobacter baumanii nicotinamidase pyrazinamidease

• PDB DOI: https://doi.org/10.2210/pdb2WTA/pdb

• Classification: HYDROLASE
• Organism(s): Acinetobacter baumannii AYE
• Expression System: Escherichia coli BL21(DE3)
• Mutation(s): No 


• Deposited: 2009-09-15 Released: 2009-11-10 
• Deposition Author(s): Fyfe, P.K., Rao, V.A., Zemla, A., Cameron, S., Hunter, W.N.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.177 
• R-Value Work: 0.147 
• R-Value Observed: 0.149 

Literature

Specificity and Mechanism of Acinetobacter Baumanii Nicotinamidase: Implications for Activation of the Front-Line Tuberculosis Drug Pyrazinamide.

Fyfe, P.K., Rao, V.A., Zemla, A., Cameron, S., Hunter, W.N.

(2009) Angew Chem Int Ed Engl 48: 9176

• PubMed: 19859929 
• DOI: https://doi.org/10.1002/anie.200903407
• Primary Citation of Related Structures:  
  2WT9, 2WTA

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Organizational Affiliation: 

Division of Biological Chemistry and Drug Discovery, College of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, UK.

Biological Assembly 1  

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

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

Macromolecule Content

• Total Structure Weight: 26.57 kDa 
• Atom Count: 1,996 
• Modelled Residue Count: 213 
• Deposited Residue Count: 236 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
NICOTINAMIDASE	A	235	Acinetobacter baumannii AYE	Mutation(s): 0  EC: 3.5.1.19

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
VGL	C [auth A]	PYRAZINE-2-CARBOXYLIC ACID C5 H4 N2 O2 NIPZZXUFJPQHNH-UHFFFAOYSA-N
GOL	D [auth A], E [auth A], F [auth A]	GLYCEROL C3 H8 O3 PEDCQBHIVMGVHV-UHFFFAOYSA-N
ZN	B [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
CL	G [auth A], H [auth A], I [auth A]	CHLORIDE ION Cl VEXZGXHMUGYJMC-UHFFFAOYSA-M

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
CAF	A	L-PEPTIDE LINKING	C5 H12 As N O3 S		CYS

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.70 Å
• R-Value Free: 0.177 
• R-Value Work: 0.147 
• R-Value Observed: 0.149 
• Space Group: I 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 50.688	α = 90
b = 46.507	β = 101.97
c = 107.602	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
SCALA	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2009-11-10 
Deposition Author(s): Fyfe, P.K., Rao, V.A., Zemla, A., Cameron, S., Hunter, W.N.

Revision History  

• Version 1.0: 2009-11-10
  Type: Initial release
  
• Version 1.1: 2011-07-13
  Changes: Advisory, Version format compliance
• Version 1.2: 2011-11-09
  Changes: Database references, Non-polymer description
• Version 1.3: 2023-12-20
  Changes: Data collection, Database references, Derived calculations, Other, Refinement description