Lactate dehydrogenase (LDH) is an enzyme(EC220.127.116.11) present in a wide variety of organisms, including plants and animals.A tetrameric enzyme that catalyses the interconversion of pyruvateand lactate with concomitant interconversion of NADH and NAD+. At high concentrations of pyruvate, the enzyme exhibits feedback inhibition and the rate of conversion of pyruvate to lactate is decreased. In vertebrates, genes for three different subunits (LDH-A, LDH-B and LDH-C) exist.
Lactate Dehydrogenase, LDH.
Sterile lyophilized powder.
The protein (1 mg/ml) was lyophilized with 0.1mg potassium phosphate.
It is recommended to reconstitute the lyophilized LDH in sterile 18MΩ-cm H2O not less than 100 µg/ml, which can then be further diluted to other aqueous solutions.
Lyophilized Lactate Dehydrogenase althoµgh stable at room temperature for 3 weeks, should be stored desiccated below -18°C. Upon reconstitution LDH should be stored at 4°C between 2-7 days and for future use below -18°C.Please prevent freeze-thaw cycles.
Greater than 95.0% as determined by(a) Analysis by RP-HPLC.(b) Analysis by SDS-PAGE.
The specific activity was found to be 258 U/mg protein.
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