Protein Recognition of Gold-Based Drugs: 3D Structure of the Complex Formed When Lysozyme Reacts with Aubipy(c.).Messori, L., Cinellu, M.A., Merlino, A.
(2014) ACS Med Chem Lett 5: 1110-1113
- PubMed: 25313321
- DOI: https://doi.org/10.1021/ml500231b
- Primary Citation of Related Structures:
- PubMed Abstract:
The structure of the adduct formed in the reaction between Aubipy(c), a cytotoxic organogold(III) compound, and the model protein hen egg white lysozyme (HEWL) has been solved by X-ray crystallography. It emerges that Aubipy(c), after interaction with HEWL, undergoes reduction of the gold(III) center followed by detaching of the cyclometalated ligand; the resulting naked gold(I) ion is found bound to the protein at Gln121. A direct comparison between the present structure and those previously solved for the lysozyme adducts with other gold(III) compounds demonstrates that coordinated ligands play a key role in the protein-metallodrug recognition process. Structural data support the view that gold(III)-based antitumor prodrugs are activated through metal reduction.
Department of Chemical Sciences, University of Naples Federico II , via Cintia, Napoli I-80126, Italy ; CNR Institute of Biostructure and Bioimages , via Mezzocannone 16, Napoli I-80100, Italy.