1BGI image
Entry Detail
PDB ID:
1BGI
Keywords:
Title:
ORTHORHOMBIC LYSOZYME CRYSTALLIZED AT HIGH TEMPERATURE (310K)
Biological Source:
Source Organism:
PDB Version:
Deposition Date:
1998-05-28
Release Date:
1998-10-28
Method Details:
Experimental Method:
Resolution:
1.70 Å
R-Value Free:
0.21
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:LYSOZYME
Chain IDs:A
Chain Length:129
Number of Molecules:1
Biological Source:Gallus gallus
Ligand Molecules
Primary Citation
Refined structure of orthorhombic lysozyme crystallized at high temperature: correlation between morphology and intermolecular contacts.
Acta Crystallogr.,Sect.D 55 114 121 (1999)
PMID: 10089401 DOI: 10.1107/S0907444998008713

Abstact

The structure of orthorhombic hen egg-white lysozyme (HEWL) crystallized at 310 K has been refined at 1.7 A resolution. Large displacements of the side-chain atoms with respect to the tetragonal structure were observed in many places, in contrast to small displacements of the main-chain atoms. A chloride-ion binding site was observed at an interface of two molecules, but at a different position to the binding site in the tetragonal form. The analysis of intermolecular contacts in the crystal has shown the presence of three independent intermolecular contacts which are called macrobonds A, B and C. Arginine side chains are frequently involved in these macrobonds, suggesting that the high frequency of this residue in HEWL may be a possible reason for the multiple polymorphs of this protein. The crystal forms were determined using a light-reflecting device on a four-circle diffractometer. Correlations between crystal forms and the three-dimensional macrobond networks were interpreted in terms of their components in various crystallographic planes, making use of approximate strengths of hydrogen-bond and van der Waals interatomic forces.

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