Seems to be a catalytically inactive enzyme. Forms homodimer (By similarity). Interacts with G6PD1 (PubMed:21309870). A number of isoforms are produced. According to EST sequences. Expressed in leaves, stems and buds. There are 6 glucose-6-phosphate 1-dehydrogenase genes in A.thaliana. Belongs to the glucose-6-phosphate dehydrogenase family.