Each ERBB receptor has distinct locations and numbers of tyrosine phosphorylation sites on its C-terminal tails; there are twelve on ERBB1, six on ERBB2, and eleven on ERBB3 (Jones et al.

Now, Hu and colleagues show that noradrenaline regulates the phosphorylation of GluR1, a subunit of α-amino-3-hydroxy-5-methyl-4-isoxazoleproprionic acid (AMPA) receptors, which then facilitates ...