Publication Abstract from PubMed
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.
A magic triangle for experimental phasing of macromolecules.,Beck T, Krasauskas A, Gruene T, Sheldrick GM Acta Crystallogr D Biol Crystallogr. 2008 Nov;64(Pt 11):1179-82. Epub 2008, Oct 18. PMID:19020357[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
