First Crystal Structure for a Gold Carbene–Protein Adduct
2016-06-30T00:00:00Z (GMT) by
The X-ray structure of the adduct formed in the reaction between the gold N-heterocyclic carbene compound Au(NHC)Cl (with NHC = 1-butyl-3-methyl-imidazole-2-ylidene) and the model protein thaumatin is reported here. The structure reveals binding of Au(NHC)<sup>+</sup> fragments to distinct protein sites. Notably, binding of the gold compound occurs at lysine side chains and at the N-terminal tail; the metal binds the protein after releasing Cl<sup>–</sup> ligand, but retaining NHC fragment.