The glyceraldehyde 3-phosphate dehydrogenase, or GAPDH enzyme plays an important role in the conversion of glucose for energy, catalyzing the sixth step of the glycolytic pathway. A common and widely expressed protein, GAPDH mRNA is often used as a standard in mRNA studies. GAPDH antibody products are also used as a loading control in Western blot assays. We at Novus Biologicals have 55 GAPDH antibody products on our antibody database.