Abstract
In the past years, capillary electrophoresis has become a frequently used technique for enzyme assays due to the high separation efficiency and versatility as well as small sample size and low consumption of chemicals. The capillary electrophoresis assays can be divided into two general categories: pre-capillary (or offline) assays and in-capillary (or online) assays. In pre-capillary assays, the incubation is performed offline and substrate(s) and product(s) are subsequently analyzed by capillary electrophoresis. In in-capillary assays enzyme reaction and separation of the analytes are performed inside the same capillary. In such assays the enzyme is either immobilized or in solution. The latter techniques is also referred to as electrophoretically mediated microanalysis (EMMA) indicating that the individual steps of the incubation as well as analysis are performed via electrophoretic phenomena. This chapter describes both techniques using the deacetylation of acetyl-lysine residues in model peptides by sirtuin enzymes as well as the hydrolysis of acetylthiocholine by acetylcholinesterase as examples.
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Scriba, G.K.E., Abromeit, H., Hense, M., Fan, Y. (2013). Capillary Electrophoretic Enzyme Assays. In: Volpi, N., Maccari, F. (eds) Capillary Electrophoresis of Biomolecules. Methods in Molecular Biology, vol 984. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-62703-296-4_21
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DOI: https://doi.org/10.1007/978-1-62703-296-4_21
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