PITPNB encodes the human gene, Phosphatidylinositol transfer protein beta. It may also be known as: Phosphatidylinositol transfer protein beta isoform; PI-TP-beta; PtdIns transfer protein beta; PtdInsTP beta; PtdInsTP; VIB1B; phosphatidylinositol transfer protein, beta. The encoded protein has an amino acid length of 271 and a mass of 31.5 kDa. Other isoforms may exist. PITPNB is a member of the PtdIns transfer protein family, PI transfer class I subfamily. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.