Splicing factor that regulates oogenesis and controls both mitosis and mRNA localization in the germline by regulating mRNA splicing of a subset of genes within the ovary. Probably acts by regulating the alternative splice site selection of the otu transcript. Also regulates the alternative splicing of eIF4E1 and grk, while it is not involved in the splicing of par-1, sqd and psq. Interacts with enc. However, given the cytoplasmic localization of enc, the relevance of such interaction is unclear. Expressed in all germline cells and within the follicle cell. The third RNA recognition motif, called PUMP domain in PubMed:10606266, is atypical and may rather mediate protein-protein interactions. Belongs to the RRM half pint family.