Figure 6. A diagram depicting the actions of translational regulatory proteins on GluRIIA, GluRIIB, and eIF-4E mRNAs.
GluRIIA is repressed by Pum, miR-284a, and dFMR1. However, only Pum has been shown to directly bind to the 3′UTR of GluRIIA mRNA. Pum also binds to eIF-4E and nos mRNAs. GluRIIB expression is repressed by Nos, miR-284a and dFMR1. GluRIIA and GluRIIB compete for synaptic occupancy, so that GluRIIA represses GluRIIB expression and vice versa.