256L

BACTERIOPHAGE T4 LYSOZYME


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Work: 0.163 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

A mutant T4 lysozyme displays five different crystal conformations.

Faber, H.R.Matthews, B.W.

(1990) Nature 348: 263-266

  • DOI: 10.1038/348263a0

  • PubMed Abstract: 
  • Phage T4 lysozyme consists of two domains between which is formed the active-site cleft of the enzyme. The crystallographically determined thermal displacement parameters for the protein suggested that the amino terminal of the two domains undergoes ...

    Phage T4 lysozyme consists of two domains between which is formed the active-site cleft of the enzyme. The crystallographically determined thermal displacement parameters for the protein suggested that the amino terminal of the two domains undergoes 'hinge-bending' motion about an axis passing through the waist of the molecule. Such conformational mobility may be important in allowing access of substrates to the active site of the enzyme. We report here a crystallographic study of a mutant T4 lysozyme which demonstrates further the conformational flexibility of the protein. A mutant form of the enzyme with a methionine residue (Met 6) replaced by isoleucine crystallizes with four independent molecules in the crystal lattice. These four molecules have distinctly different conformations. The mutant protein can also crystallize in standard form with a structure very similar to the wild-type protein. Thus the mutant protein can adopt five different crystal conformations. The isoleucine for methionine substitution at the intersection of the two domains of T4 lysozyme apparently enhances the hinge-bending motion presumed to occur in the wild-type protein, without significantly affecting the catalytic activity or thermal stability of the protein.


    Organizational Affiliation

    Department of Physics, University of Oregon, Eugene 97403.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LYSOZYME
A
164Enterobacteria phage T4Mutation(s): 1 
Gene Names: E
EC: 3.2.1.17
Find proteins for P00720 (Enterobacteria phage T4)
Go to UniProtKB:  P00720
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.8 Å
  • R-Value Work: 0.163 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 61.100α = 90.00
b = 61.100β = 90.00
c = 97.600γ = 120.00
Software Package:
Software NamePurpose
ROSSMANNdata reduction
CAMBRIDGE/ODPROCdata scaling
TNTrefinement
TNTphasing
CCP4data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-05-27
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance