Enables ribonucleoprotein complex binding activity. Involved in neuron projection development and positive regulation of translational initiation. Located in axon; dendrite cytoplasm; and neuronal ribonucleoprotein granule. Is expressed in brain; heart; liver; metanephros; and musculature. Orthologous to human UHMK1 (U2AF homology motif kinase 1). [provided by Alliance of Genome Resources, Apr 2022]