Enables HMG box domain binding activity. Involved in learning or memory; regulation of neuronal synaptic plasticity; and response to insulin. Predicted to be located in cytoplasm and nucleoplasm. Biomarker of middle cerebral artery infarction. Human ortholog(s) of this gene implicated in Charcot-Marie-Tooth disease type 1D; Charcot-Marie-Tooth disease type 3; Charcot-Marie-Tooth disease type 4E; and motor peripheral neuropathy. Orthologous to human EGR2 (early growth response 2). [provided by Alliance of Genome Resources, Apr 2022]