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Key Documents

L2625

Sigma-Aldrich

L-Lactic Dehydrogenase from bovine heart

Type III, ammonium sulfate suspension, ≥500 units/mg protein

Synonyme(s) :

Lactate, (S)-Lactate: NAD+ oxidoreductase, L-LDH, LAD, LD

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About This Item

Numéro CAS:
Numéro de classification (Commission des enzymes):
Numéro CE :
Numéro MDL:
Code UNSPSC :
12352204
Nomenclature NACRES :
NA.54

Type

Type III

Niveau de qualité

Forme

ammonium sulfate suspension

Activité spécifique

≥500 units/mg protein

Numéro d'accès UniProt

Activité étrangère

pyruvate kinase ≤0.03%

Température de stockage

2-8°C

Informations sur le gène

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Description générale

Research area: Cell signaling

Lactate dehydrogenase (LDH) is a cytoplasmic enzyme that belongs to the oxidoreductase’s family. It is ubiquitously expressed in body tissues but at high levels in muscle, liver, and kidney. LDH exists as tetramer and comprises of two subunits (H and M). The LDH of eukaryotes undergo active-site loop gating for their catalytic functionality. L-lactate, which is the major enantiomeric form of lactate in vertebrates, is produced by the L-isomers of LDH enzyme encoded by the LDHC gene.

Application

L-Lactic Dehydrogenase from bovine heart has been used as a standard in cytotoxicity assay. It has also been used in glutamic pyruvic transaminase (GPT) assay.

Actions biochimiques/physiologiques

Lactate dehydrogenase (LDH) is a crucial enzyme that plays a vital role in the anaerobic metabolic pathway. It facilitates the conversion of lactate to pyruvate and NAD⁺ to NADH, and vice versa, within cells. This enzymatic reaction plays a crucial role in cellular energy production, particularly in environments with low oxygen levels or hypoxic conditions. LDH activity is also significant in tumor glycolysis and the Warburg effect. LDH is released into the bloodstream when the cells are damaged or undergo death. Therefore, LDH can be used as a potential marker of cell injury and death. High lactate dehydrogenase activity is associated with various medical conditions, such as liver disease, anemia, heart attack, bone fractures, muscle trauma, and certain types of cancer.
Also catalyzes the oxidation of other L-2-hydroxymonocarboxylic acids.

Définition de l'unité

One unit will reduce 1.0 μmole of pyruvate to L-lactate per min at pH 7.5 at 37 °C.

Forme physique

Crystalline suspension in 2.1 M (NH4)2SO4 solution, pH 6.0

Remarque sur l'analyse

Protein determined by biuret

Pictogrammes

Health hazard

Mention d'avertissement

Danger

Mentions de danger

Conseils de prudence

Classification des risques

Resp. Sens. 1

Code de la classe de stockage

10 - Combustible liquids

Classe de danger pour l'eau (WGK)

WGK 1

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)


Certificats d'analyse (COA)

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Adaptation of rats to diets containing different levels of protein: effects on food intake, plasma and brain amino acid concentrations and brain neurotransmitter metabolism
Peters JC and Harper AE
The Journal of Nutrition, 115(3), 382-398 (1985)
Kyoung-Han Kim et al.
The Journal of pharmacology and experimental therapeutics, 324(1), 160-169 (2007-10-12)
Doxorubicin (DOX) is an effective antineoplastic agent whose use has been limited by its cardiotoxic side effects. Recent studies have established that erythropoietin (EPO), a cytokine essential for red blood cell production, protects against ischemic injury in the heart and
Johannes Yayo et al.
Applied and environmental microbiology, 89(1), e0175322-e0175322 (2023-01-11)
Clostridium thermocellum is a cellulolytic thermophile that is considered for the consolidated bioprocessing of lignocellulose to ethanol. Improvements in ethanol yield are required for industrial implementation, but the incompletely understood causes of amino acid secretion impede progress. In this study
Interferon beta-1b inhibits gelatinase secretion and in vitro migration of human T cells: a possible mechanism for treatment efficacy in multiple sclerosis
Leppert D, et al.
Annals of Neurology, 40(6), 846-852 (1996)
Biochemistry, lactate dehydrogenase
Farhana A and Lappin SL
StatPearls [Internet] (2020)

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