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Durham University

Department of Chemistry

Publication details for Dr Lars-Olof Pålsson

Marje Kasari, Kadri Ligi, J.A. Gareth Williams, Angela Vaasa, Erki Enkvist, Kaido Viht, Lars-Olof Pålsson & Asko Uri (2013). Responsive microsecond-lifetime photoluminescent probes for analysis of protein kinases and their inhibitors. Biochimica et Biophysica Acta 1834(7): 1330-1335.

Author(s) from Durham


Responsive ARC-Lum probes were used for measurement of the concentration of active protein kinases (PKs) and determination of affinity of inhibitors of PKs. ARC-Lum probes incorporate thiophene or a selenophene heterocycle and a fluorophore conjugated to the lysine residue in the peptide fragment. In the complex with a PK, ARC-Lum probes emit long-lifetime (microsecond-scale) luminescence at the emission wavelengths of the fluorescent label if the complex is illuminated at the excitation wavelength of the thiophene- or selenophene-containing phosphorescence donors. Bisubstrate ARC-Lum probes bind with sub-nanomolar affinity with several PKs of the AGC group. This article is part of a Special Issue entitled: Inhibitors of Protein Kinases (2012).