Mapping the protein-binding sites for iridium(iii)-based CO-releasing molecules.
Caterino, M., Petruk, A.A., Vergara, A., Ferraro, G., Marasco, D., Doctorovich, F., Estrin, D.A., Merlino, A.(2016) Dalton Trans 45: 12206-12214
- PubMed: 27411388 
- DOI: https://doi.org/10.1039/c6dt01685e
- Primary Citation of Related Structures:  
5JMG, 5JML - PubMed Abstract: 
A combination of mass spectrometry, Raman microspectroscopy, circular dichroism and X-ray crystallography has been used to obtain detailed information on the reaction of an iridium-based CO-releasing molecule (Ir-CORM), Cs2IrCl5CO, with a model protein, bovine pancreatic ribonuclease. The results show that Ir-compound fragments bind to the N-terminal amine and close to histidine and methionine side chains, and the CO ligand is retained for a long time. The data provide helpful information for identifying protein targets for Ir-CORMs and for studying the mechanism that allows them to exhibit their interesting biological properties.
Organizational Affiliation: 
Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Via Cintia, I-80126, Napoli, Italy. antonello.merlino@unina.it.