Enables mRNA 3'-UTR binding activity. Involved in posttranscriptional gene silencing. Predicted to be located in Flemming body and nucleoplasm. Predicted to be part of ribonucleoprotein complex. Predicted to be active in cytoplasm and nucleus. Human ortholog(s) of this gene implicated in developmental and epileptic encephalopathy. Orthologous to human CELF2 (CUGBP Elav-like family member 2). [provided by Alliance of Genome Resources, Apr 2022]