1KXY

ANALYSIS OF THE STABILIZATION OF HEN LYSOZYME WITH THE HELIX DIPOLE AND CHARGED SIDE CHAINS


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.79 Å
  • R-Value Work: 0.176 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Analysis of the stabilization of hen lysozyme by helix macrodipole and charged side chain interaction.

Motoshima, H.Mine, S.Masumoto, K.Abe, Y.Iwashita, H.Hashimoto, Y.Chijiiwa, Y.Ueda, T.Imoto, T.

(1997) J.Biochem.(Tokyo) 121: 1076-1081

  • Primary Citation of Related Structures:  1KXW, 1KXX, 1RFP

  • PubMed Abstract: 
  • In the N-terminal region of the alpha-helix of the c-type lysozymes, two Asx residues exist at the 18th and 27th positions. Hen lysozyme has Asp18/Asn27 (18D/27N), and we prepared three mutant lysozymes, Asn18/Asn27 (18N/27N), Asn18/Asp27 (18N/27D), ...

    In the N-terminal region of the alpha-helix of the c-type lysozymes, two Asx residues exist at the 18th and 27th positions. Hen lysozyme has Asp18/Asn27 (18D/27N), and we prepared three mutant lysozymes, Asn18/Asn27 (18N/27N), Asn18/Asp27 (18N/27D), and Asp18/Asp27 (18D/27D). The stability of the wild-type (18D/27N) lysozyme supported the existence of a hydrogen bond between the side chain of Asp18 and the amide group at the N1 position in the alpha-helix, while the stability of the 18N/27D lysozyme supported the presence of the capping box between the Ser24 (N-cap) and Asp27 residues. Although electrostatic repulsion was observed between Asp18 and Asp27 residues in 18D/27D lysozyme, the dissociation of each residue contributed to stabilizing the B-helix in 18D/27D lysozyme through hydrogen bonding and charge-helix macrodipole interaction. This is the first evidence that two neighboring negative charges at the N-terminus of the helix both increased the stability of the protein.


    Organizational Affiliation

    Graduate School of Pharmaceutical Sciences, Kyushu University 62, Fukuoka.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LYSOZYME
A
129Gallus gallusGene 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: 1.79 Å
  • R-Value Work: 0.176 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 79.100α = 90.00
b = 79.100β = 90.00
c = 38.160γ = 90.00
Software Package:
Software NamePurpose
X-PLORrefinement
X-PLORmodel building
PROCESSdata reduction
PROCESSdata collection
PROCESSdata scaling
X-PLORphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1997-11-26
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance