D-glyceraldehyde 3-phosphate = dihydroxyacetone phosphate Carbohydrate biosynthesis; gluconeogenesis. Carbohydrate degradation; glycolysis; D-glyceraldehyde 3-phosphate from glycerone phosphate: step 1/1. Homodimer. By water stress. In plants, there are two types of TPIS, cytosolic and plastid. On the 2D-gel the determined pI of this protein (spot N139) is: 5.9, its MW is: 24 kDa. Belongs to the triosephosphate isomerase family.