- Threonine 308 within a putative casein kinase 2 site of the cytoplasmic tail of leukotriene B(4) receptor (BLT1) is crucial for ligand-induced, G-protein-coupled receptor-specific kinase 6-mediated desensitization. Gaudreau, R., Le Gouill, C., Venne, M.H., Stankova, J., Rola-Pleszczynski, M. J. Biol. Chem. (2002)