3e3s

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Structure of thaumatin with the magic triangle I3CStructure of thaumatin with the magic triangle I3C

Structural highlights

3e3s is a 1 chain structure with sequence from Thaumatococcus daniellii. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.73Å
Ligands:, ,
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

THM1_THADA Taste-modifying protein; intensely sweet-tasting. It is 100000 times sweeter than sucrose on a molar basis.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

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.

References

  1. Beck T, Krasauskas A, Gruene T, Sheldrick GM. A magic triangle for experimental phasing of macromolecules. Acta Crystallogr D Biol Crystallogr. 2008 Nov;64(Pt 11):1179-82. Epub 2008, Oct 18. PMID:19020357 doi:10.1107/S0907444908030266

3e3s, resolution 1.73Å

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