• USA Home
  • M5257 - Malic Dehydrogenase (oxalacetate-decarboxylating) from chicken liver

M5257 Sigma-Aldrich

Malic Dehydrogenase (oxalacetate-decarboxylating) from chicken liver

ammonium sulfate suspension, 10-30 units/mg protein (modified Warburg-Christian)

Synonym: L-Malate:NADP+ oxidoreductase-(oxalacetate-decarboxylating), Malate Dehydrogenase (oxalacetate-decarboxylating), Malic Enzyme



General description

Malic dehydrogenase (MDH) exists as two isoforms within eukaryotic cells, one that is expressed in the mitochondria and functions in the TCA cycle and one in the cytoplasm that converts malate from the mitochondria back into oxaloacetate.


Malic dehydrogenase has been used in a study to assess the dietary manganese requirement of juvenile yellow catfish (Pelteobagrus fulvidraco) and effects on whole body mineral composition and hepatic intermediary metabolism. It has also been used in a study to investigate the establishment and biological characterization of a fibroblast cell line from the Langshan chicken.

Biochem/physiol Actions

Expression of malic dehydrogenase in chicken liver is induced upon feeding and decreases in response to starvation.

Unit Definition

One unit will convert 1.0 μmole of L-malate and NADP to pyruvate, CO2, and NADPH per min at pH 7.4 at 25 °C.

Physical form

Suspension in 2.9 M (NH4)2SO4 solution containing 10 mM potassium phosphate, 0.5 mM 2-mercaptoethanol, 10 mM manganese chloride, and 3 mM Na4EDTA, pH 6.0

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Protocols & Articles


Ammonium Sulfate Suspensions - Technical Note

Note that for an ammonium sulfate suspension, most of the enzyme will be in solid form. It is likely that only negligible amounts of enzyme will be in the ammonium sulfate solution.
Keywords: Enzyme activity

Related Content

Enzymes & Proteins

Committed to developing and providing breakthrough problem-solving reagents and solutions, explore our comprehensive offering of enzymes and protein reagents and kits with the confidence that you wil...
Keywords: Cell signaling, Diagnostic, Enzyme-linked immunosorbent assay, Immunohistochemistry, Metabolism, Molecular biology, Purification, Western blot

Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?