May act as scaffold protein. May stimulate ABRA activity and ABRA-dependent SRF transcriptional activity. Directly interacts with F-actin and ABRA. Expressed in heart, brain, lung and liver. In the brain, highly expressed in the olfactory bulb. In the hippocampus, expressed selectively in the CA2 and CA3 fields. In the cerebellum, expressed in internal granular cells. At 15.5 dpc, expressed in skeletal muscle. Down-regulated in adult skeletal muscle.