GluA1 has four known phosphorylation sites at serine 818 (S818), S831, threonine 840, and S845 (other subunits have similar phosphorylation sites, but GluR1 has been the most extensively studied).
GluR1 ima četiri poznata mesta fosforilacije: na serinu 818 (S818), S831, treoninu 840, i S845 (druge podjedinice imaju slična mesta fosforilacije, mada je GluR1 najdetaljnije izučen).