1LPI

HEW LYSOZYME: TRP...NA CATION-PI INTERACTION


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.269 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Cation-pi (Na+-Trp) interactions in the crystal structure of tetragonal lysozyme.

Wouters, J.

(1998) Protein Sci. 7: 2472-2475

  • DOI: 10.1002/pro.5560071127

  • PubMed Abstract: 
  • Experimental evidence of a cation-pi interaction between a sodium cation (Na+) and the indole ring of residue Trp123 in a structure (2.0 A) of hen egg-white lysozyme is presented. The geometry of the metal ion-pi interaction observed in the protein s ...

    Experimental evidence of a cation-pi interaction between a sodium cation (Na+) and the indole ring of residue Trp123 in a structure (2.0 A) of hen egg-white lysozyme is presented. The geometry of the metal ion-pi interaction observed in the protein structure (distance between the aromatic plane and the cation approximately 4 A) is consistent with geometries observed among small molecules crystal structures and quantum chemistry ab initio calculations. The present crystal structure of lysozyme provides unique structural information about the geometry of binding of cations to pi systems in proteins. It shows that the metal ion-pi interaction within proteins is not significantly different from similar bindings found in small molecules and that it can be modeled by theoretical methods.


    Organizational Affiliation

    Facult├ęs Universitaires N.-D. de la Paix, Namur, Belgium. wouters@scf.fundp.ac.be




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LYSOZYME
A
129Gallus gallusMutation(s): 0 
Gene Names: LYZ
EC: 3.2.1.17
Find proteins for P00698 (Gallus gallus)
Go to Gene View: LYZ
Go to UniProtKB:  P00698
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
A
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.269 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 79.100α = 90.00
b = 79.100β = 90.00
c = 37.900γ = 90.00
Software Package:
Software NamePurpose
MOSFLMdata reduction
SHELXL-96model building
SHELXL-96refinement
SHELXL-96phasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

  • Deposited Date: 1998-04-15 
  • Released Date: 1998-06-17 
  • Deposition Author(s): Wouters, J.

Revision History 

  • Version 1.0: 1998-06-17
    Type: Initial release
  • Version 1.1: 2008-03-24
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance