3E3D

Structure of hen egg white lysozyme with the magic triangle I3C

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

A magic triangle for experimental phasing of macromolecules

Beck, T., Krasauskas, A., Gruene, T., Sheldrick, G.M.

(2008) Acta Crystallogr D Biol Crystallogr 64: 1179-1182

  • DOI: 10.1107/S0907444908030266
  • Primary Citation of Related Structures:  
    3E3S, 3E3T, 3E3D

  • PubMed Abstract: 

    • Obtaining phase information for the solution of macromolecular structures is still one of the bottlenecks in X-ray crystallography. 5-Amino-2,4,6-triiodoisophthalic acid (I3C), in which three covalently bound iodines form an equilateral triangle, was ...

    Obtaining phase information for the solution of macromolecular structures is still one of the bottlenecks in X-ray crystallography. 5-Amino-2,4,6-triiodoisophthalic acid (I3C), in which three covalently bound iodines form an equilateral triangle, was incorporated into proteins in order to obtain phases by single-wavelength anomalous dispersion (SAD). An improved binding capability compared with simple heavy-metal ions, ready availability, improved recognition of potential heavy-atom sites and low toxicity make I3C particularly suitable for experimental phasing.

    Organizational Affiliation: 

    Department of Structural Chemistry, Georg-August-Universität Göttingen, Tammannstrasse 4, 37077 Göttingen, Germany. tbeck@shelx.uni-ac.gwdg.de



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Lysozyme CA129Gallus gallusMutation(s): 0 
Gene Names: LYZ
EC: 3.2.1.17
Find proteins for P00698 (Gallus gallus)
Explore P00698 
Go to UniProtKB:  P00698
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
I3C
Query on I3C
Download Ideal Coordinates CCD File 
A
5-amino-2,4,6-triiodobenzene-1,3-dicarboxylic acid
C8 H4 I3 N O4
JEZJSNULLBSYHV-UHFFFAOYSA-N		 Ligand Interaction
EPE
Query on EPE
Download Ideal Coordinates CCD File 
A
4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACID
C8 H18 N2 O4 S
JKMHFZQWWAIEOD-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.55 Å
  • R-Value Free: 0.220 
  • R-Value Work: 0.171 
  • R-Value Observed: 0.173 
  • Space Group: P 43 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 76.83α = 90
b = 76.83β = 90
c = 38.87γ = 90
Software Package:
Software NamePurpose
SHELXrefinement
PDB_EXTRACTdata extraction
MAR345data collection
XDSdata reduction
SADABSdata scaling
SHELXDphasing
SHELXL-97refinement

Structure Validation

View Full Validation Report


View more in-depth experimental data

Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-10-28
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2012-04-11
    Changes: Database references
  • Version 1.3: 2017-10-25
    Changes: Refinement description