3Q2O

Crystal Structure of purK: N5-carboxyaminoimidazole ribonucleotide synthetase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.195 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Structure of N(5)-carboxyaminoimidazole ribonucleotide synthase (PurK) from Bacillus anthracis.

Tuntland, M.L.Johnson, M.E.Fung, L.W.Santarsiero, B.D.

(2011) Acta Crystallogr.,Sect.D 67: 870-874

  • DOI: 10.1107/S0907444911029210

  • PubMed Abstract: 
  • The apo structure of N5-carboxyaminoimidazole ribonucleotide synthase (PurK) from Bacillus anthracis (baPurK) with Mg2+ in the active site is reported at 1.96 Å resolution. PurK is an enzyme in the purine-biosynthetic pathway, unique to prokaryotes, ...

    The apo structure of N5-carboxyaminoimidazole ribonucleotide synthase (PurK) from Bacillus anthracis (baPurK) with Mg2+ in the active site is reported at 1.96 Å resolution. PurK is an enzyme in the purine-biosynthetic pathway, unique to prokaryotes, that converts 5-aminoimidazole ribonucleotide to N5-carboxyaminoimidazole ribonucleotide and has been suggested as a potential antimicrobial drug target. Two interesting features of baPurK are a flexible B-loop (residues 149/150-157) that is in close contact with the active site and the binding of Mg2+ to the active site without additional ligands.


    Organizational Affiliation

    Department of Chemistry, University of Illinois at Chicago, Chicago, IL 60607, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Phosphoribosylaminoimidazole carboxylase, ATPase subunit
A, B
389N/A
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A, B
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.96 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.195 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 57.430α = 90.00
b = 82.445β = 90.00
c = 166.621γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
XSCALEdata scaling
XDSdata scaling
MAR345dtbdata collection
PHASERphasing
REFMACrefinement
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-10-26
    Type: Initial release