Abstract
Mono-ADP-ribosyltransferases of the PARP/ARTD enzyme family are enzymes catalyzing the transfer of a single ADP-ribose unit to target proteins. The enzymes have various roles in vital cellular processes such as DNA repair and transcription, and many of the enzymes are linked to cancer-relevant functions. Thus inhibition of the enzymes is a potential way to discover and develop new drugs against cancer. Here we describe an activity-based screening assay for mono-ADP-ribosyltransferases. The assay utilizes the natural substrate of the enzymes, NAD+, and it is based on chemically converting the leftover substrate to a fluorophore and measuring its relative concentration after the enzymatic reaction. The assay is homogenous, robust, and cost-effective and, most importantly, applicable to mono-ADP-ribosyltransferases as well as poly-ADP-ribosyltransferases for screening of small-molecule inhibitors against the enzymes.
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Haikarainen, T., Murthy, S., Maksimainen, M.M., Lehtiö, L. (2018). Small-Molecule Screening Assay for Mono-ADP-Ribosyltransferases. In: Chang, P. (eds) ADP-ribosylation and NAD+ Utilizing Enzymes. Methods in Molecular Biology, vol 1813. Humana, New York, NY. https://doi.org/10.1007/978-1-4939-8588-3_16
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DOI: https://doi.org/10.1007/978-1-4939-8588-3_16
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