Biological Assembly 1  

 3D View: Structure | Electron Density | Ligand Interaction

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

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 24917.81 
• Atom Count: 1771 
• Residue Count: 231 
• Unique protein chains: 1

1ATG

AZOTOBACTER VINELANDII PERIPLASMIC MOLYBDATE-BINDING PROTEIN

• DOI: 10.2210/pdb1ATG/pdb

• Classification: BINDING PROTEIN
• Organism(s): Azotobacter vinelandii


• Deposited: 1997-08-14 Released: 1998-10-14 
• Deposition Author(s): Lawson, D.M., Pau, R.N., Williams, C.E.M., Mitchenall, L.A.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.2 Å
• R-Value Free: 0.183 
• R-Value Work: 0.164 

Literature

Ligand size is a major determinant of specificity in periplasmic oxyanion-binding proteins: the 1.2 A resolution crystal structure of Azotobacter vinelandii ModA.

Lawson, D.M., Williams, C.E., Mitchenall, L.A., Pau, R.N.

(1998) Structure 6: 1529-1539

• PubMed: 9862806 


• PubMed Abstract: 
  

. Periplasmic receptors constitute a diverse class of binding proteins that differ widely in size, sequence and ligand specificity. Nevertheless, almost all of them display a common beta/alpha folding motif and have similar tertiary structures consisting of two globular domains. The ligand is bound at the bottom of a deep cleft, which lies at the interface between these two domains. The oxyanion-binding proteins are notable in that they can discriminate between very similar ligands.

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Related Citations: 

• Protein Ligands for Molybdate. Specificity and Charge Stabilisation at the Anion-Binding Sites of Periplasmic and Intracellular Molybdate-Binding Proteins of Azotobacter Vinelandii
  Lawson, D.M.,Williams, C.E.M.,White, D.J.,Choay, A.P.,Mitchenall, L.A.,Pau, R.N.
  (1997) J.Chem.Soc.,Dalton Trans. --: 3981




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Organizational Affiliation: 

Nitrogen Fixation Laboratory John Innes Centre Norwich NR4 7UH UK. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
PERIPLASMIC MOLYBDATE-BINDING PROTEIN	A	231	Azotobacter vinelandii
Find proteins for Q7SIH2 (Azotobacter vinelandii) Go to UniProtKB:  Q7SIH2

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram & Interactions
SO4	A	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
ACT	A	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M
EDO	A	ethane-1,2-diol ETHYLENE GLYCOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N
WO4	A	TUNGSTATE(VI)ION O4 W PBYZMCDFOULPGH-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.2 Å
• R-Value Free: 0.183 
• R-Value Work: 0.164 
• Space Group: P 1 2₁ 1

Unit Cell:

Length (Å)	Angle (°)
a = 32.934	α = 90.00
b = 88.802	β = 93.55
c = 41.746	γ = 90.00

Software Package:

Software Name	Purpose
DENZO	data reduction
VARIOUS	model building
DM	model building
CCP4	phasing
DM	phasing
OTHERS)	phasing
O	model building
SCALEPACK	data scaling
REFMAC	refinement

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 1997-08-14 
• Released Date: 1998-10-14 
• Deposition Author(s): Lawson, D.M., Pau, R.N., Williams, C.E.M., Mitchenall, L.A.

Revision History 

• Version 1.0: 1998-10-14
  Type: Initial release
• Version 1.1: 2008-03-03
  Type: Version format compliance
• Version 1.2: 2011-07-13
  Type: Version format compliance