4AY3

Crystal structure of Bacillus anthracis PurE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.76 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.152 
  • R-Value Observed: 0.153 

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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 D Biol Crystallogr 69: 194

  • DOI: 10.1107/S090744491204454X
  • Primary Citation of Related Structures:  
    4B4K, 4AY4, 4AY3

  • 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 in the relative humidity environment of the crystals are documented ...

    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.lografía, Barcelona, Spain.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE MUTASEA, B, C, D181Bacillus anthracisMutation(s): 0 
Gene Names: purEGBAA_0288F0720_24815FYB77_23915GRA88_07960GRA94_13045GRA98_01205
EC: 4.1.1.21 (PDB Primary Data), 5.4.99.18 (PDB Primary Data)
Find proteins for A0A6L7HA71 (Bacillus anthracis)
Explore A0A6L7HA71 
Go to UniProtKB:  A0A6L7HA71
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.76 Å
  • R-Value Free: 0.178 
  • R-Value Work: 0.152 
  • R-Value Observed: 0.153 
  • Space Group: P 31 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 86.876α = 90
b = 86.876β = 90
c = 131.37γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

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