146L

ROLE OF BACKBONE FLEXIBILITY IN THE ACCOMMODATION OF VARIANTS THAT REPACK THE CORE OF T4 LYSOZYME


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The role of backbone flexibility in the accommodation of variants that repack the core of T4 lysozyme.

Baldwin, E.P.Hajiseyedjavadi, O.Baase, W.A.Matthews, B.W.

(1993) Science 262: 1715-1718

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • To understand better how the packing of side chains within the core influences protein structure and stability, the crystal structures were determined for eight variants of T4 lysozyme, each of which contains three to five substitutions at adjacent i ...

    To understand better how the packing of side chains within the core influences protein structure and stability, the crystal structures were determined for eight variants of T4 lysozyme, each of which contains three to five substitutions at adjacent interior sites. Concerted main-chain and side-chain displacements, with movements of helical segments as large as 0.8 angstrom, were observed. In contrast, the angular conformations of the mutated side chains tended to remain unchanged, with torsion angles within 20 degrees of those in the wild-type structure. These observations suggest that not only the rotation of side chains but also movements of the main chain must be considered in the evaluation of which amino acid sequences are compatible with a given protein fold.


    Related Citations: 
    • Control of Enzyme Activity by an Engineered Disulfide Bond
      Matsumura, M.,Matthews, B.W.
      (1989) Science 243: 792
    • Construction and Functional Selection of a T4 Lysozyme Gene Library Randomly Mutagenized at Five Specific Sites
      Baldwin, E.,Xu, J.,Hajiseyedjavadi, O.
      (1993) Techniques in Protein Chemistry Iv --: 499
    • Structure of Bacteriophage T4 Lysozyme Refined at 1.7 Angstroms Resolution
      Weaver, L.H.,Matthews, B.W.
      (1987) J.Mol.Biol. 193: 189


    Organizational Affiliation

    Institute of Molecular Biology, Howard Hughes Medical Institute, University of Oregon, Eugene 97403.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
T4 LYSOZYME
A
164Enterobacteria phage T4Mutation(s): 0 
Gene Names: E
EC: 3.2.1.17
Find proteins for P00720 (Enterobacteria phage T4)
Go to UniProtKB:  P00720
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
BME
Query on BME

Download SDF File 
Download CCD File 
A
BETA-MERCAPTOETHANOL
C2 H6 O S
DGVVWUTYPXICAM-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.85 Å
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 61.100α = 90.00
b = 61.100β = 90.00
c = 97.000γ = 120.00
Software Package:
Software NamePurpose
TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1994-01-31
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other