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Exploring Sequence Space to Identify Binding Sites for Regulatory RNA-Binding Proteins
Published on: August 9, 2019
Cisplatin binding to proteins: molecular structure of the ribonuclease a adduct
Luigi Messori1, Antonello Merlino
1Department of Chemistry, University of Florence , Via della Lastruccia 3, 50019 Sesto Fiorentino, Italy.
Abstract:
The crystal structure of the main adduct formed in the reaction between cisplatin and bovine pancreatic ribonuclease is reported here. Notably, in both of the protein molecules present in the asymmetric unit, platinum(II) binding takes place exclusively at the level of Met29. In one of the two molecules, the Gln28 side chain completes the platinum coordination sphere, anchoring the cisplatin fragment to the protein in a bidentate fashion. These results contain interesting implications for understanding the biological chemistry of this important drug.
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