Articles | Volume 3, issue 2
https://doi.org/10.5194/mr-3-169-2022
https://doi.org/10.5194/mr-3-169-2022
Research article
 | 
13 Sep 2022
Research article |  | 13 Sep 2022

Site-selective generation of lanthanoid binding sites on proteins using 4-fluoro-2,6-dicyanopyridine

Sreelakshmi Mekkattu Tharayil, Mithun C. Mahawaththa, Akiva Feintuch, Ansis Maleckis, Sven Ullrich, Richard Morewood, Michael J. Maxwell, Thomas Huber, Christoph Nitsche, Daniella Goldfarb, and Gottfried Otting

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Cited articles

Abdelkader, E. H., Feintuch, A., Yao, X., Adams, L. A., Aurelio, L., Graham, B., Goldfarb, D., and Otting, G.: Protein conformation by EPR spectroscopy using gadolinium tags clicked to genetically encoded p-azido-l-phenylalanine, Chem. Commun., 51, 15898–15901, https://doi.org/10.1039/C5CC07121F, 2015. 
Bahrenberg, T., Rosenski, Y., Carmieli, R., Zibzener, K., Qi, M., Frydman, V., Godt, A., Goldfarb, D., and Feintuch, A.: Improved sensitivity for W-band Gd(III)-Gd(III) and nitroxide-nitroxide DEER measurements with shaped pulses, J. Magn. Reson., 283, 1–13, https://doi.org/10.1016/j.jmr.2017.08.003, 2017. 
Barak, N. N., Neumann, P., Sevvana, M., Schutkowski, M., Naumann, K., Malešević, M., Reichardt, H., Fischer, G., Stubbs, M. T., and Ferrari, D. M.: Crystal structure and functional analysis of the protein disulfide isomerase-related protein ERp29, J. Mol. Biol., 385, 1630–1642, https://doi.org/10.1016/j.jmb.2008.11.052, 2009. 
Bertini, I., Luchinat, C., and Parigi, G.: Magnetic susceptibility in paramagnetic NMR, Prog. Nucl. Mag. Res. Sp., 40, 211–236, https://doi.org/10.1016/S0079-6565(02)00002-X, 2002. 
Collauto, A., Frydman, V., Lee, M., Abdelkader, E., Feintuch, A., Swarbrick, J., Graham, B., Otting, G., and Goldfarb, D.: RIDME distance measurements using Gd(III) tags with a narrow central transition, Phys. Chem. Chem. Phys., 18, 19037–19049, https://doi.org/10.1039/C6CP03299K, 2016. 
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Short summary
Having shown that tagging a protein at a single site with different lanthanoid complexes delivers outstanding structural information at a selected site of a protein (such as active sites and ligand binding sites), we now present a simple way by which different lanthanoid complexes can be assembled on a highly solvent-exposed cysteine residue. Furthermore, the chemical assembly is selective for selenocysteine, if a selenocysteine residue can be introduced into the protein of interest.
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