Predicted to enable rhodopsin kinase activity. Predicted to be involved in G protein-coupled receptor internalization and protein phosphorylation. Predicted to act upstream of or within phosphorylation. Predicted to be located in cytosol; dendrite; and neuronal cell body. Predicted to be active in cytoplasm. Is expressed in brain and testis. Human ortholog(s) of this gene implicated in essential hypertension. Orthologous to human GRK4 (G protein-coupled receptor kinase 4). [provided by Alliance of Genome Resources, Apr 2022]