Acts upstream of or within several processes, including focal adhesion assembly; glomerular filtration; and negative regulation of stress fiber assembly. Located in plasma membrane. Is expressed in several structures, including genitourinary system; hindlimb digit mesenchyme; musculoskeletal system; nervous system; and retina nuclear layer. Orthologous to human RHPN1 (rhophilin Rho GTPase binding protein 1). [provided by Alliance of Genome Resources, Apr 2022]