DAP-1 is known to be highly enriched in synaptosomal preparations of the brain, and present in the post-synaptic density.

[5] This gene encodes the protein called guanylate kinase-associated protein (GKAP).

GKAP binds to the SHANK2 and PSD-95 proteins, facilitating the assembly of the post-synaptic density of neurons.

[6] Dlgap1 has five 14-amino-acid repeats and three Pro-rich portions.

This article on a gene on human chromosome 18 is a stub.