Lactate dehydrogenase (LDH-E)

  • Enzymes for Clinical Chemistry

The enzyme is useful for the determination of lactate in clinical analysis and continuous lactate monitoring sensor.

Origin recombinant E. coli
Systematic name

(s)-Lactate : ferricytochrome-c 2-oxidoreductase

Reaction formula

L-Lactate + acceptor → → → Pyruvate + reduced acceptor

SPECIFICATION

Appearance Reddish brown lyophilizate
Activity ≧230 U/mg
Storage condition below -20℃ protected from light

PROPERTIES

Molecular weight ca. 55 kDa (SDS-PAGE)
Structure tetramer
Coenzymes (Cofactors) FMN, Heme b (protoheme IX)
Michaelis constant 1.7×10-3M (L-Lactate)
pH Optimum 7.5
pH Stability 7.0–8.0
Optimum temperature 40℃
Thermal stability (liquid form) below 40℃

APPLICATIONS

The enzyme is useful for the determination of lactate in clinical analysis and continuous lactate monitoring sensor.

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