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Malate Dehydrogenase, chemically modified

from pig heart, lyophilizate

For further processing only.

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Order information
Malate Dehydrogenase, chemically modified material number and pack size:
Material Number Pack Size
11866109103 custom fill
Will be supplied as "MDH, Lyo., mod.". Unit of measure is "MU".
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Overview
Dehydrogenase that catalyzes the interconversion of malate to oxaloacetate.
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Application
Use Malate Dehydrogenase in diagnostic tests for the determination of aspartate aminotransferase or in applications for citric and acetic acid testing. The chemical modification generates an increased liquid stability of the enzyme.
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Specification
Appearance: White lyophilizate
pH value: 7.5-8.5
Activity (+25°C, oxaloacetate): ≥20 U/mg lyophilizate
Specific activity: ≥400 U/mg protein
Protein (BCA): ≥0.02 mg/mg lyophilizate
Contaminants (expressed as percentage of Malate Dehydrogenase activity):
Aspartate aminotransferase (AST/GOT): ≤0.01
''NADH-Oxidase'': ≤0.005
SVD free: Corresponds to specification
pH 5.5 treatment (30 minutes): Corresponds to specification
Stability: At -15 to -25°C within specification range for 18 months.