The postsynaptic density (PSD) is a structure composed of both membranous and
cytoplasmic proteins localized at the postsynaptic plasma membrane of excitatory synapses.
Biochemical and molecular biological studies have identified a number of proteins present
in the PSD. Glutamate receptors are important constituents of the PSD and membrane
proteins involved in synaptic signal transduction and cell adhesion are also essential
components. Scaffolding proteins containing multiple protein interaction motifs are thought …