RNA-binding protein which recognizes the 5'-UACUCAU-3' RNA consensus sequence (PubMed:24838563). Binds sequences in both the 5'coding and the 3'-UTR region of rme-2 mRNA (PubMed:11562350). Binds sequences in the 3'-UTR region of cye-1 mRNA. Binds to cyb-2.1, cyb-2.2 and cyb-3 mRNA (PubMed:19758560). Binds sequences in the 3'-UTR region of tra-2 mRNA (PubMed:24838563). Germ line-specific tumor suppressor essential for oogenesis (PubMed:7601353). Controls the spatial pattern of translation of multiple oogenesis specific mRNAs (e.g. yolk receptor rme-2) by repression of translation during early meiotic prophase (leptotene to pachytene) and then derepression of translation during diplotene/ diakinesis, following its degradation. Also functions to promote the male sexual fate in the hermaphrodite germline but not the male germline (PubMed:7601353, PubMed:11562350, PubMed:24838563). Represses translation of the vacuolar ATPase component vha-13 in the distal gonad (PubMed:29168500). Functions redundantly with gld-2 to promote the initiation of meiotic development and/or inhibit stem cell proliferation (PubMed:11562350). By regulating cye-1 expression, prevents entry into mitosis in meiotic germline cells (PubMed:19758560, PubMed:21455289). Homodimer. Expressed in proximal and distal oocytes in female worms but is eliminated from proximal oocytes following mating. The KH domain and the Qua2 region are involved in RNA binding. Phosphorylated by cdk-2 which may negatively regulate its expression in distal mitotic germline cells. Undergoes proteasomal degradation in proximal oocytes following mating.