2EQL

CRYSTALLOGRAPHIC STUDIES OF A CALCIUM BINDING LYSOZYME FROM EQUINE MILK AT 2.5 ANGSTROMS RESOLUTION

• PDB DOI: https://doi.org/10.2210/pdb2EQL/pdb

• Classification: HYDROLASE(O-GLYCOSYL)
• Organism(s): Equus caballus
• Mutation(s): No 


• Deposited: 1994-05-27 Released: 1994-07-31 
• Deposition Author(s): Tsuge, H., Ago, H., Miyano, M.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Work: 0.234 
• R-Value Observed: 0.234 

Literature

Crystallographic studies of a calcium binding lysozyme from equine milk at 2.5 A resolution.

Tsuge, H., Ago, H., Noma, M., Nitta, K., Sugai, S., Miyano, M.

(1992) J Biochem 111: 141-143

• PubMed: 1569037 
• DOI: https://doi.org/10.1093/oxfordjournals.jbchem.a123727
• Primary Citation of Related Structures:  
  2EQL


• PubMed Abstract: 
  

  The crystal structure of a calcium binding equine lysozyme has been determined at 2.5 A resolution by means of molecular replacement. The energy minimized equine lysozyme as the starting model, was refined with the molecular dynamics program, X-PLOR, and the R factor of the current model was found to be 24% without any water molecules. The conformation of the calcium binding loop is similar to that of alpha-lactalbumin. The profiles of backbone atomic displacements throughout the lysozyme and alpha-lactalbumin superfamilies are comparable as well as their homologous tertiary structures.

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Organizational Affiliation: 

Life Science Research Laboratory, Japan Tobacco, Inc., Kanagawa.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 14.67 kDa 
• Atom Count: 1,023 
• Modelled Residue Count: 129 
• Deposited Residue Count: 129 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
HORSE MILK LYSOZYME	A	129	Equus caballus	Mutation(s): 0
UniProt
Find proteins for P11376 (Equus caballus) Explore P11376  Go to UniProtKB:  P11376

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.50 Å
• R-Value Work: 0.234 
• R-Value Observed: 0.234 
• Space Group: P 2₁ 2₁ 2₁

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 54.1	α = 90
b = 57.2	β = 90
c = 38.7	γ = 90

Software Package:

Software Name	Purpose
X-PLOR	model building
X-PLOR	refinement
X-PLOR	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 1994-07-31 
Deposition Author(s): Tsuge, H., Ago, H., Miyano, M.

Revision History  

• Version 1.0: 1994-07-31
  Type: Initial release
  
• Version 1.1: 2008-03-24
  Changes: Version format compliance
• Version 1.2: 2011-07-13
  Changes: Version format compliance
• Version 1.3: 2017-11-29
  Changes: Derived calculations, Other