3LZ2

STRUCTURE DETERMINATION OF TURKEY EGG WHITE LYSOZYME USING LAUE DIFFRACTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Work: 0.200 
  • R-Value Observed: 0.200 

wwPDB Validation 3D Report Full Report


This is version 1.5 of the entry. See complete history


Literature

Structure determination of turkey egg-white lysozyme using Laue diffraction data.

Howell, P.L.Almo, S.C.Parsons, M.R.Hajdu, J.Petsko, G.A.

(1992) Acta Crystallogr B 48: 200-207

  • DOI: 10.1107/s0108768191012466
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • The three-dimensional structure of turkey egg-white lysozyme (TEWL) has been solved and refined at 2.5 A resolution using X-ray data collected by the Laue method. This is the first protein structure determination undertaken using Laue diffraction dat ...

    The three-dimensional structure of turkey egg-white lysozyme (TEWL) has been solved and refined at 2.5 A resolution using X-ray data collected by the Laue method. This is the first protein structure determination undertaken using Laue diffraction data. A re-examination of the existing structure of TEWL was necessary when attempts to refine an atomic model based on the C alpha positions in the Protein Data Bank (entry 1LZ2) failed. The correct orientation and position of the turkey lysozyme molecules within the crystallographic unit cell were determined by molecular replacement using a refined model of the homologous hen egg-white lysozyme crystal structure. After modification of the model to reflect the differences in amino-acid sequence between the chicken and turkey enzymes, the structure was subjected to crystallographic refinement using the simulated-annealing refinement technique and conventional least-squares refinement. This yielded a final residual of R = 20.7%. This crystal form is of potential interest for time-resolved crystallographic studies since the amino-acid residues involved in catalysis (Asp52 and Glu35) are accessible to solvent and not blocked by crystal contacts.


    Organizational Affiliation

    Chemistry Department, Massachusetts Institute of Technology, Cambridge 02139.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
TURKEY EGG WHITE LYSOZYME
A
129Meleagris gallopavoMutation(s): 0 
Gene Names: LYZ
EC: 3.2.1.17
Find proteins for P00703 (Meleagris gallopavo)
Go to UniProtKB:  P00703
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Work: 0.200 
  • R-Value Observed: 0.200 
  • Space Group: P 61 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 70.89α = 90
b = 70.89β = 90
c = 84.6γ = 120
Software Package:
Software NamePurpose
X-PLORmodel building
PROLSQrefinement
X-PLORrefinement
X-PLORphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-11-29
    Changes: Derived calculations, Other
  • Version 1.4: 2019-07-17
    Changes: Data collection, Refinement description
  • Version 1.5: 2019-08-14
    Changes: Data collection, Refinement description