RNA-binding protein that is involved in oogenesis. Required for correct targeting of the migrating anterior follicle cells and the establishment of anterior-posterior polarity in the oocyte. May act as translational repressor of oskar during oogenesis. Function seems to be sensitive to small changes in expression. Abundantly expressed in ovaries and early embryos. Expressed in the devoloping ovary. First detectable at stages 3 and 4 of oogenesis but remains very faint until stage 5, when the protein level increases substantially. In stages 4 to 6 is visible throughout the oocyte cytoplasm but is enriched at the osterior pole of the oocyte. During stages 7 to 9 is abundant in the oocyte cytoplasm, with some enrichment at the anterior of the oocyte and around the oocyte cortex. In stage 10 and in later stages is expressed at high levels in the nurse cells (at protein level). Belongs to the BicC family.