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L2011

Sigma-Aldrich

D-Lactic Dehydrogenase from Lactobacillus leichmannii

ammonium sulfate suspension, ≥250 units/mg protein (biuret)

Synonym(s):

Lactate, (R)-Lactate:NAD+ oxidoreductase, D−LDH

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About This Item

CAS Number:
9028-36-8
Enzyme Commission number:
1.1.1.28 (BRENDA, IUBMB)
MDL number:
MFCD00130907
UNSPSC Code:
12352204
NACRES:
NA.54

form

ammonium sulfate suspension

Quality Level

200

specific activity

≥250 units/mg protein (biuret)

foreign activity

Malic dehydrogenase <0.5% of base activity

storage temp.

2-8°C

General description

Research area: Cell Signalling D-lactate dehydrogenase belongs to the D-isomer-specific 2-hydroxyacid dehydrogenase family. Lactate dehydrogenase (LD) is a tetramer consisting of two (H and M) subunits. It has five isozymes (LD1 to LD5) and this composition varies in different tissues. LD1 is abundant in the kidney, heart, and erythrocytes. LD5 is found in the liver and skeletal muscles. LD is a ubiquitous molecule found in plants, yeast, mammals, and microorganisms and is a member of the oxidoreductase family.

Biochem/physiol Actions

Lactic dehydrogenase (LDH)plays an important role in the glycolytic pathway where it converts pyruvate tolactate by using NAD+ as a co-factor. It is considered animportant molecule that can be used in cancer therapy as it acts as aglycolytic inhibitor. Inhibition of LDH is associated with blocking of aerobicglycolysis in tumour cells.

Unit Definition

One unit will reduce 1.0 μmole of pyruvate to D-lactate per min at pH 7.0 at 25 °C.

Physical form

Suspension in 3.2 M (NH4)2SO4, pH 6.0

Storage Class Code

12 - Non Combustible Liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

JAN Code

L2011-2.5KU-PW:
L2011-VAR:
L2011-500UN:
L2011-5KU:
L2011-5KU-PW:
L2011-2.5KU:
L2011-BULK:

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Certificates of Analysis (COA)

Lot/Batch Number
058M4090V
0000125830
059M4089V
11170224
126M4049V

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H Taguchi et al.
The Journal of biological chemistry, 266(19), 12588-12594 (1991-07-05)
The gene encoding D-lactate dehydrogenase (D-lactate: NAD+ oxidoreductase, EC 1.1.1.28) of Lactobacillus plantarum has been sequenced, and expressed in Escherichia coli cells with an inducible expression plasmid, in which the 5'-noncoding region of the gene was replaced with the tac
Torben Larsen
Analytical biochemistry, 539, 152-157 (2017-11-06)
D-lactic acid in the mammalian body is mainly of microbiological origin and is often located somewhere along the digestive tract. Surgical, extensive re-sectioning of the small bowel may be one of the risk factors for altered balance in the microbiological
C L McLaughlin et al.
Journal of dairy science, 92(6), 2758-2766 (2009-05-19)
A challenge model was used to evaluate a new approach to controlling acute acidosis. Acute acidosis reduces performance in both dairy and beef cattle and most often occurs as a consequence of ingestion of large amounts of readily fermentable starch
Zhaojuan Zheng et al.
Applied and environmental microbiology, 78(9), 3480-3483 (2012-02-22)
NAD-dependent l- and d-lactate dehydrogenases coexist in Lactobacillus genomes and may convert pyruvic acid into l-lactic acid and d-lactic acid, respectively. Our findings suggest that the relative catalytic efficiencies of ldhL- and ldhD-encoded products are crucial for the optical purity
Wenwen Zhao et al.
Analytical chemistry, 84(15), 6701-6706 (2012-07-04)
We proposed the first application of an electrophoretically mediated microanalysis (EMMA) method for fast online discrimination and determination of substrate enantiomers, which was achieved by just one EMMA assay. Lactate dehydrogenase (LDH)-catalyzed reaction was studied to evaluate the feasibility and
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