Discs, Large Homolog Associated Protein 2 (DLGAP2)

The product of this gene is one of the membrane-associated guanylate kinases localized at postsynaptic density in neuronal cells. These kinases are a family of signaling molecules expressed at various submembrane domains and contain the PDZ, SH3 and the guanylate kinase domains. This protein may play a role in the molecular organization of synapses and in neuronal cell signaling. Alternatively spliced transcript variants encoding different isoforms have been identified, but their full-length nature is not known.Sequence analysis predicted that the 538-amino acid DLGAP2 shares 52% sequence similarity with DLGAP1 and contains four 14-amino acid repeats and 3 proline-rich regions. Binding analysis showed that DLGAP2, like DLGAP1, interacts with DLG4 and DLG1.