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Merck
CN

L7525

L-Lactic Dehydrogenase 来源于猪心脏

ammonium sulfate suspension, ≥200 units/mg protein

别名:

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

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关于此项目

化学文摘社编号:
UNSPSC Code:
12352204
NACRES:
NA.54
EC Number:
232-617-8
MDL number:
Specific activity:
≥200 units/mg protein
Biological source:
Porcine heart
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产品名称

L-Lactic Dehydrogenase 来源于猪心脏, ammonium sulfate suspension, ≥200 units/mg protein

biological source

Porcine heart

form

ammonium sulfate suspension

specific activity

≥200 units/mg protein

UniProt accession no.

foreign activity

glutamic-oxalacetic transaminase ≤0.1%
malic dehydrogenase, glutamic-pyruvic transaminase and pyruvate kinase ≤0.06%

storage temp.

2-8°C

Quality Level

Gene Information

pig ... LDHA(407245)

Biochem/physiol Actions

Also catalyzes the oxidation of other L-2-hydroxymonocarboxylic acids.
Lactate dehydrogenase (LDH) enzyme is responsible for the conversion of pyruvate to lactate, during glycolysis under hypoxic conditions, while also converting NADH to NAD+. Moreover it acts as a crucial regulator of gluconeogenesis and DNA metabolism. Increased serum LDH levels are detected in conditions such as cancer, HIV infection, muscular dystrophy, megaloblastic anemia, extreme hypothermia, hepatitis, meningitis, hypoxia, etc.

Other Notes

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

Physical form

Suspension in ammonium sulfate and 0.1 M potassium phosphate, pH 7.0

Application

L-Lactic Dehydrogenase from porcine heart has been used:
  • as a component of the reaction buffer to measure the GTPase activity of EngA bound to the bacterial 50S subunit to study its structure and function.
  • as a component of the enzyme solutions to test the sensitivity of multiphoton NAD(P)H fluorescence lifetime imaging (FLIM) in key enzymatic steps controlling the path of carbon from glucose uptake to electron transport chain (ETC) activity.

General description

Research area: Cell Signaling

Lactic Dehydrogenase (LDH) is a cytoplasmic enzyme encoded by LDHA, LDHB, LDHC, and LDHD genes, and categorized as an oxidoreductase. It is widely distributed throughout the body, particularly in muscle, liver, and kidney. LDH demonstrates five isomeric forms that form tetramers with two types of subunits: muscle (M) and heart (H).

pictograms

Health hazard

signalword

Danger

hcodes

Hazard Classifications

Resp. Sens. 1

存储类别

11 - Combustible Solids

wgk

WGK 1

ppe

Eyeshields, Gloves, type N95 (US)

法规信息

低风险生物材料
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历史批次信息供参考:

分析证书(COA)

Lot/Batch Number

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访问文档库

Biochemistry, Lactate Dehydrogenase
Farhana A and Lappin SL
StatPearls [Internet] (2023)
Clinical Biochemistry and Hematology
Washington IM and Hoosier GV
Journal of Separation Science, 57-116 (2012)
Joe T Sharick et al.
Scientific reports, 8(1), 5456-5456 (2018-04-05)
While NAD(P)H fluorescence lifetime imaging (FLIM) can detect changes in flux through the TCA cycle and electron transport chain (ETC), it remains unclear whether NAD(P)H FLIM is sensitive to other potential fates of glucose. Glucose carbon can be diverted from
M J Adams et al.
Proceedings of the National Academy of Sciences of the United States of America, 70(7), 1968-1972 (1973-07-01)
The binding of coenzyme and substrate are considered in relation to the known primary and tertiary structure of lactate dehydrogenase (EC 1.1.1.27). The adenine binds in a hydrophobic crevice, and the two coenzyme phosphates are oriented by interactions with the
H P Schär et al.
Hoppe-Seyler's Zeitschrift fur physiologische Chemie, 360(7), 795-807 (1979-07-01)
Lactate dehydrogenases from thermophilic bacilli (Bacillus stearothermophilus, Bacillus caldotenax) and from mesophilic bacilli (Bacillus X1, Bacillus subtilis) have been isolated by a two-step purification procedure. Only one type (LDH-P4) composed of four identical subunits (Mr 34 000 or 36 000)

商品

Instructions for working with enzymes supplied as ammonium sulfate suspensions

以硫酸铵悬浮液形式提供的酶的使用指南

实验方案

This procedure applies to all products from heart muscle that have a specification for L-Lactic Dehydrogenase activity.

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