Predicted to enable several functions, including D2 dopamine receptor binding activity; enzyme binding activity; and protein C-terminus binding activity. Involved in cellular response to morphine and regulation of opioid receptor signaling pathway. Acts upstream of or within several processes, including actin filament organization; calcium-mediated signaling; and dendrite development. Located in cortical actin cytoskeleton and filopodium. Is expressed in several structures, including alimentary system; brain; cardiovascular system; genitourinary system; and immune system. Orthologous to human PPP1R9B (protein phosphatase 1 regulatory subunit 9B). [provided by Alliance of Genome Resources, Apr 2022]