Storme, J., Cannaert, A., Van Craenenbroeck, K. and Stove, C.P.
Notes: The NanoBiT Protein-Protein Interaction System was utilized to investigate the interaction of human A3 adenosine receptor, a G protein-coupled receptor, and β-arrestin2. Specifically, the importance of specific C-terminal phosphorylation sites for A3AR and β-arrestin2 coupling was determined using protein truncations. To determine the optimal fusion tags for this assay, multiple constructs were tested in the presence of an A3AR selective agonist. Unlike previous studies in rat models, C-terminal human A3AR truncations displayed no major impact on β-arrestin2 coupling. (5077)