Enables chromatin binding activity and lamin binding activity. Predicted to be involved in nucleus organization. Located in nuclear inner membrane. Is expressed in adult head; wing hinge primordium; and wing pouch. Human ortholog(s) of this gene implicated in Behcet's disease; Greenberg dysplasia; Pelger-Huet anomaly; Smith-Lemli-Opitz syndrome; and primary biliary cholangitis. Orthologous to several human genes including LBR (lamin B receptor).