Enables mRNA binding activity. Acts upstream of or within cerebellar neuron development. Predicted to be located in cytosol. Predicted to be active in P-body. Is expressed in cerebral cortex; cerebral cortex subventricular zone; cerebral cortex ventricular layer; cortical plate; and telencephalon. Orthologous to human SAMD4B (sterile alpha motif domain containing 4B). [provided by Alliance of Genome Resources, Apr 2022]