Two-component covalent inhibitor |
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Authors: | Evan M. Cornett Yulia V. Gerasimova Dmitry M. Kolpashchikov |
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Affiliation: | 1. Chemistry Department, University of Central Florida, 4000 Central Florida Blvd, Orlando, FL 32816, USA;2. Burnett School of Biomedical Sciences, University of Central Florida, 4000 Central Florida Blvd, Orlando, FL 32816, USA |
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Abstract: | Inhibitors that covalently damage proteins or nucleic acids offer great potency, but are difficult to rationally design and suffer from poor specificity. Here we outline a general concept for constructing covalent inhibitors, called the two-component covalent inhibitor (TCCI). The approach takes advantage of two ligand analogs equipped with pre-reactive groups. Binding of the analogs to the adjacent sites of a target biopolymer brings the pre-reactive groups in close proximity and causes their interaction followed by covalent damage of the target. In the present study we used light-activated pre-reactive groups to inactivate a DNA polymerase. It was found that the efficiency of a traditional single-component inhibitor was greatly reduced in the presence of a non-target protein, while the TCCI was not significantly affected. Our findings suggest that TCCI approach has advantages in inactivation of biopolymers in complex multi-component systems. |
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