Required for transport of secretory proteins from the Golgi complex (By similarity). Catalyzes the transfer of phosphatidylinositol and phosphatidylcholine between membranes in vitro. A number of isoforms are produced. According to EST sequences. Predominantly expressed in flowers but also slightly detected in stems and immature siliques. First detected in the stigma papillae of the flowers at stage 11, and then in the pollen grains before and after fertilization. Belongs to the SFH family.