4ZB2 image
Deposition Date 2015-04-14
Release Date 2016-03-23
Last Version Date 2024-01-10
Entry Detail
PDB ID:
4ZB2
Keywords:
ISOMERASE
Title:
A native form of glucose isomerase collected at room temperature.
Biological Source:
Source Organism:
Streptomyces rubiginosus (Taxon ID: 1929)
Host Organism:
Streptomyces rubiginosus
Method Details:
Experimental Method:
X-RAY DIFFRACTION
Resolution:
2.00 Å
R-Value Free:
0.13
R-Value Work:
0.10
R-Value Observed:
0.10
Space Group:
I 2 2 2
4ZB2 validation report
Macromolecular Entities
Protein Blast
Polymer Type:polypeptide(L)
Molecule:Xylose isomerase
Gene (Uniprot):xylA
Chain IDs:A
Chain Length:388
Number of Molecules:1
Biological Source:Streptomyces rubiginosus
UniProt ID:P24300 Pfam ID:PF01261 EC:5.3.1.5
Ligand Molecules
FRU
GLC
MN
Primary Citation
A generic protocol for protein crystal dehydration using the HC1b humidity controller.
Acta Crystallogr D Struct Biol 72 629 640 (2016)
PMID: 27139626 DOI: 10.1107/S2059798316003065

Abstact

Dehydration may change the crystal lattice and affect the mosaicity, resolution and quality of X-ray diffraction data. A dehydrating environment can be generated around a crystal in several ways with various degrees of precision and complexity. This study uses a high-precision crystal humidifier/dehumidifier to provide an airstream of known relative humidity in which the crystals are mounted: a precise yet hassle-free approach to altering crystal hydration. A protocol is introduced to assess the impact of crystal dehydration systematically applied to nine experimental crystal systems. In one case, that of glucose isomerase, dehydration triggering a change of space group from I222 to P21212 was observed. This observation is supported by an extended study of the behaviour of the glucose isomerase crystal structure during crystal dehydration.

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Primary Citation of related structures
4ZBO
4ZBC
4ZB5