Decreased phytic acid in grain with corresponding increases in inorganic phosphate. cDNA for the enzyme, complete CDS, GenBank AF056326, maps 7 RFLPs - HindIII fragments to 6S, 9L, 8L, 9S, and 5S; EcoRV fragments to 4L and to 1S (presumably lpa1). This gene was originally curated in MaizeGDB Database and the map position was displayed on the maize bins map if feasible.