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L-Lactate Dehydrogenase (L-LDH), chemically modified

from pig heart, lyophilizate

For further processing only.

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L-Lactate Dehydrogenase (L-LDH), chemically modified material number and pack size:
Material Number Pack Size
11866117103 custom fill
Will be supplied as "Lactate Dehydrogenase (LDH)". Unit of measure is "MU".
Dehydrogenase that catalyzes the interconversion of L(+)-lactate to pyruvate.
Use L-Lactate Dehydrogenase (L-LDH), chemically modified, in a variety of diagnostic tests for the removal of pyruvate in determinations working with NADH (i.e., triglycerides, lipase, aldolase, aminotransferases, glutamate dehydrogenase). The chemical modification generates an increased liquid stability of the enzyme.
Appearance: White lyophilizate
Solubility: Clear, colorless solution in water (c=10 mg/mL)
pH value: 7.1-8.1
Activity (+25°C, pyruvate): ≥25 U/mg lyophilizate
Specific activity: ≥150 U/mg protein
Protein (BCA): 0.15-0.25 mg/mg lyophilizate
Contaminants (expressed as percentage of Lactate Dehydrogenase activity):
Aspartate aminotransferase (AST/GOT): ≤0.005
Unspecificity of Lactate dehydrogenase: ≤0.05
Alanine aminotransferase (ALT/GPT): ≤0.01
Unspecificity of Lactate dehydrogenase: ≤0.05
''NADH-Oxidase'': ≤0.001
SVD free: Corresponds to specification
pH 5.5 treatment (30 minutes): Corresponds to specification
Stability in CAPSO (pH 9.4, at +60°C for 1 hour): ≥50%
Stability: At +2 to +8°C within specification range for 12 months.