M1567

Malic Dehydrogenase from porcine heart

≥600 units/mg protein (biuret), ammonium sulfate suspension

• Sinónimos: L-Malate: NAD⁺ oxidoreductase, MDH, Malate Dehydrogenase
• Comisión internacional de enzimas: 1.1.1.37 (BRENDA, IUBMB)
• EC Number: 232-622-5
• MDL number: MFCD00131567
• UNSPSC Code: 12352204
• NACRES: NA.54

Propiedades

• form: ammonium sulfate suspension
• specific activity: ≥600 units/mg protein (biuret)
• foreign activity: Glutamic-Oxalacetic Transaminase ≤0.01%; Glutamic-Pyruvic Transaminase ≤0.01%
• storage temp.: 2-8°C

Descripción

General description

Malic Dehydrogenase is a ubiquitous enzyme, which exists in two isoforms in eukaryotic cells.

Malic dehydrogenase exists as a dimer with each subunit containing an NAD-binding domain and a substrate-binding carboxy-terminal domain required for activity.

Malic dehydrogenase is a cytoplasmic isozyme and an important catalyst in the tricarboxylic acid cycle.

Application

Malic Dehydrogenase from porcine heart has been used:

• in qualitative protein binding measurements
• to test internally calibrated electrochemical continuous enzyme assay (ICECEA) with model enzyme pair
• to investigate the effect of chaperone on the refolding of heat-denatured malate dehydrogenase

Malic dehydrogenase has been used in a study to assess the effect of an immunomodulator S2 complex on the enzymes of the parasites. It has also been used in a study to investigate the heterogeneity of lactic and malic dehydrogenase in cerebrospinal fluid.

Biochem/physiol Actions

Malic Dehydrogenase (MDH) plays an important role in the citric acid cycle in mitochondria. It catalyzes the interconversion of substrates malate and oxaloacetate with the simultaneous oxidation/reduction of NAD/NADH⁺. MDH present in the cytosol is involved in the shuttling of malate/aspartate.

Unit Definition

One unit will convert 1.0 μmole of oxalacetate and β-NADH to L-malate and β-NAD per min at pH 7.5 at 25°C.

Physical form

Suspension in 2.8 M (NH₄)₂SO₄ solution, pH 6.0

Información de seguridad

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)