Fumarate (HO2CCH=CHCO2H-) is an intermediate in the Kreb’s cycle used by cells to metabolize food to form ATP. In the mammalian liver, Fumarate is also a product of the Urea cycle where its release in the cytosol leads to its conversion into malate and subsequently oxaloacetate while generating NADH in the cytosol. The human skin naturally produces fumaric acid when exposed to sunlight. In fact, fumaric acid esters have been used to treat psoriasis, possibly due to an impaired production of fumaric acid in the skin. Fumaric acid has also been used in beverages, baking powders and candy. The Fumarate Assay Kit provides a convenient tool for sensitive detection of the fumarate in a variety of samples. The fumarate Enzyme Mix recognizes fumarate as a specific substrate leading to proportional color development. The amount of fumarate can therefore be easily quantified using a colorimetric assay (lambda = 450nm). It can detect as low as 1nmol of fumarate per well (20uM).Kit Components:Fumarate *Assay Buffer 1x25mlFumarate Enzyme Mix 1x1vialFumarate Developer 1x1vialFumarate Standard (0.1M) 1x0.2ml.Storage and Stability:Store the kit at -20°C, protect from light. Allow *Assay Buffer to warm to RT before use. Stable for at least 6 months. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap.