Enables phosphogluconate dehydrogenase (decarboxylating) activity. Acts upstream of or within pentose biosynthetic process. Predicted to be located in intracellular membrane-bounded organelle. Predicted to be active in cytosol. Is expressed in several structures, including adrenal gland; alimentary system; axial musculature; liver; and orbito-sphenoid. Orthologous to human PGD (phosphogluconate dehydrogenase). [provided by Alliance of Genome Resources, Apr 2022]