1FLY

HEN EGG WHITE LYSOZYME MUTANT WITH ALANINE SUBSTITUTED FOR GLYCINE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.833 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.171 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Relationship between local structure and stability in hen egg white lysozyme mutant with alanine substituted for glycine

Masumoto, K.Ueda, T.Motoshima, H.Imoto, T.

(2000) Protein Eng. 13: 691-695

  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • We prepared five mutant lysozymes in which glycines whose dihedral angles are located in the region of the left-handed helix, Gly49, Gly67, Gly71, Gly102 and Gly117, were mutated to an alanine residue. From analyses of their thermal stabilities using ...

    We prepared five mutant lysozymes in which glycines whose dihedral angles are located in the region of the left-handed helix, Gly49, Gly67, Gly71, Gly102 and Gly117, were mutated to an alanine residue. From analyses of their thermal stabilities using differential scanning calorimetry, most of them were more destabilized than the native lysozyme, except for the G102A mutant, which has a stability similar to that of the native lysozyme at pH 2.7. As for the destabilized mutant lysozymes, their X-ray crystallographic analyses showed that their global structures did not change but that the local structures changed slightly. By examining the dihedral angles at the mutation sites based on X-ray crystallographic results, it was found that the dihedral angles at these mutation sites tended to adopt favorable values in a Ramachandran plot and that the extent and direction of their shifts from the original value had similar tendencies. Therefore, the change in dihedral angles may be the cause of the slight local structural changes around the mutation site. On the other hand, regarding the mutation of G102A, the global structure was almost identical with that of the native structure but the local structure was drastically changed. Therefore, it was suggested that the drastic local conformational change might be effective in releasing the unfavorable interaction of the native state at the mutation site.


    Organizational Affiliation

    Graduate School of Pharmaceutical Sciences, Kyushu University, 62 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LYSOZYME
A
129Gallus gallusMutations: A102G
Gene Names: LYZ
EC: 3.2.1.17
Find proteins for P00698 (Gallus gallus)
Go to Gene View: LYZ
Go to UniProtKB:  P00698
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.833 Å
  • R-Value Free: 0.232 
  • R-Value Work: 0.171 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 78.830α = 90.00
b = 78.830β = 90.00
c = 37.990γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORmodel building
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-09-06
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-10-04
    Type: Refinement description