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Biochemistry & Molecular Biology
The overall goal of our research is to understand the importance of the effect of active site composition on the function of diiron proteins. Through the use of the de novo design, we have produced model proteins that mimic the active sites of rubrerythrin and symerythrin. The proteins contain one or two additional carboxylate residues, either aspartate or glutamate, at the fourteenth and forty-seventh positions. We have purified and reconstituted the proteins. The reactivity of the enzymes with oxygen and hydrogen peroxide were investigated through various assays. Our results show that both model proteins bind metal ions in a 2:1 ratio. The study of these model proteins will help us understand how structural changes in proteins can affect reactivity.
Bell, Katherine A., "Characterization and Creation of Rubrerythrin and Symerythrin Model Proteins" (2015). Biochemistry and Molecular Biology Summer Fellows. Paper 1.