May act as scaffold protein. May stimulate ABRA activity and ABRA-dependent SRF transcriptional activity. Interacts with F-actin and ABRA. In skeletal muscle, sarcomeric or cosarcomeric localization. Expressed in brain. Highly expressed in caudate/putamen, moderately expressed in the olfactory bulb. In the hippocampus, expressed in the CA1, CA2 and CA3 fields. In the cerebellum, expressed in Purkinje cells. At 15.5 dpc, predominantly expressed in skeletal muscle tissue, including diaphragm, and to a lesser extent in the central nervous system.