Enables mRNA 3'-UTR binding activity and mRNA 5'-UTR binding activity. Involved in circadian rhythm; negative regulation of mRNA modification; and positive regulation of translation. Located in several cellular components, including neuronal cell body; nucleus; and proximal dendrite. Orthologous to human SYNCRIP (synaptotagmin binding cytoplasmic RNA interacting protein). [provided by Alliance of Genome Resources, Apr 2022]