Fusion protein amino acids 730-848 (intracellular C-terminus) of rat Neuroligin-3 (also known as gliotactin homolog, accession number AAA97871) Mouse: 99% identity (118/119 amino acids identical) Human: 98% identity (116/119 amino acids identical) ~60% identity with Neuroligin-1 ~40% identity with Neuroligin-2