Predicted to enable guanyl-nucleotide exchange factor activity. Involved in receptor clustering. Located in cell cortex. Is active in GABA-ergic synapse; glycinergic synapse; and postsynaptic specialization. Human ortholog(s) of this gene implicated in developmental and epileptic encephalopathy 8. Orthologous to human ARHGEF9 (Cdc42 guanine nucleotide exchange factor 9). [provided by Alliance of Genome Resources, Apr 2022]