Actin-binding Rho-activating protein is also known as striated muscle activator of Rho-dependent signaling (STARS) in mouse and myocyte stress 1 (MS1) in rat. STARS acts as an activator of serum response factor (SRF)-dependent transcription, possibly by inducing nuclear translocation of MKL1 or MKL2 and through a mechanism requiring Rho-actin signaling [, ].