4AY4

crystal structure of Bacillus anthracis PurE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.147 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Elastic and Inelastic Diffraction Changes Upon Variation of the Relative Humidity Environment of Pure Crystals

Oliete, R.Pous, J.Rodriguez-Puente, S.Abad-Zapatero, C.Guasch, A.

(2013) Acta Crystallogr.,Sect.D 69: 194

  • DOI: 10.1107/S090744491204454X
  • Primary Citation of Related Structures:  4AY3, 4B4K

  • PubMed Abstract: 
  • The different changes observed in the diffraction patterns of three different crystal forms (hexagonal, trigonal and monoclinic) of PurE (EC 4.1.1.21), an enzyme from the purine-biosynthesis pathway of Bacillus anthracis, upon a wide range of changes ...

    The different changes observed in the diffraction patterns of three different crystal forms (hexagonal, trigonal and monoclinic) of PurE (EC 4.1.1.21), an enzyme from the purine-biosynthesis pathway of Bacillus anthracis, upon a wide range of changes in the relative humidity environment of the crystals are documented. In addition, the changes in the unit-cell parameters, volume and bulk solvent in the three different crystal forms were systematically followed. In an attempt to explain the elastic (P6(5)22) and inelastic (P3(1)21) changes in the diffraction pattern, refined structures of the three different crystal forms determined at 100 K are presented, with particular emphasis on the tertiary and quaternary structural differences, crystal packing, intermolecular and intramolecular interactions and solvent structure. The refined structures show that the precipitant salts, solvent structure (both ordered and bulk) and conformation of the C-termini all play a role in creating a unique cement at both the intramolecular and intermolecular contacts of the different crystal forms. It is suggested that it is the combination of polyethylene glycol and the structure of the ordered water molecules (first and second layers) as well as the structure of the bulk solvent that are the critical factors in the plasticity of the hexagonal crystal packing as opposed to the inelastic responses of the lower symmetry forms.


    Organizational Affiliation

    Plataforma Automatitzada de Cristal.lografĂ­a, Barcelona, Spain.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE MUTASE
A, B, C, D
181Bacillus anthracisGene Names: purE
EC: 5.4.99.18
Find proteins for Q81ZH8 (Bacillus anthracis)
Go to UniProtKB:  Q81ZH8
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACT
Query on ACT

Download SDF File 
Download CCD File 
A, B, C, D
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.180 
  • R-Value Work: 0.147 
  • Space Group: P 65 2 2
Unit Cell:
Length (Å)Angle (°)
a = 87.003α = 90.00
b = 87.003β = 90.00
c = 270.002γ = 120.00
Software Package:
Software NamePurpose
MOLREPphasing
HKL-2000data reduction
HKL-2000data scaling
REFMACrefinement

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-01-30
    Type: Initial release
  • Version 1.1: 2013-02-20
    Type: Database references