Enables mRNA binding activity and translation repressor activity. Involved in several processes, including negative regulation of gene expression; nematode male tail tip morphogenesis; and regulation of developmental process. Acts upstream of or within positive regulation of transcription by RNA polymerase II. Located in cytoplasm and ribonucleoprotein granule. Expressed in several structures, including germ cell; hypodermal cell; intestine; neurons; and ventral nerve cord. Human ortholog(s) of this gene implicated in hydrocephalus. Is an ortholog of human TRIM71 (tripartite motif containing 71).