Vesicle trafficking protein (Probable). Functions in uterine cells to promote basement membrane (BM) mobility and BM gap formation during tissue remodeling (PubMed:27661254). Highly expressed in cells of the pi uterine cell lineage. Expressed in cells of the pi uterine cell lineage during the 8-cell stage of development. RNAi-mediated knockdown in cells of the pi uterine cell lineage impairs basement membrane (BM) sliding along each other and reduces the size of BM openings.