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Native Microorganism D-lactate dehydrogenase

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Cat No.

DIA-207

Description

A lactate dehydrogenase (LDH or LD) is an enzyme found in nearly all living cells (animals, plants, and prokaryotes). LDH catalyzes the conversion of pyruvate to lactate and back, as it converts NADH to NAD+ and back. A dehydrogenase is an enzyme that transfers a hydride from one molecule to another.

Abbr

LDH (Microorganism)

Alias

LDH; LD

Source

Microorganism

Applications

This enzyme is useful for enzymatic determination of numerous metabolites, e.g.ATP, ADP, glucose, creatinine, pyruvate, lactate and glycerol, and of enzyme activities, e.g.GPT, PK and CPK when coupled with the related enzymes.

Appearance

White amorphous powder, lyophilized

Enzyme Commission Number

EC 1.1.1.28

Activity

GradeⅡ 400U/mg-solid or more

CAS No.

9028-36-8

Contaminants

NADH oxidase < 1.0×10⁻³% Malate dehydrogenase < 1.0×10⁻²% GOT < 5.0×10⁻³% GPT < 5.0×10⁻³% Myokinase < 1.0×10⁻²% Pyruvate kinase< 1.0×10⁻³%

Molecular Weight

approx. 140 kDa (by gel filtration)

Isoelectric point

pH Stability

pH 5.0-9.0 (25°C, 48hr)

Michaelis Constant

1.6×10⁻⁴M (pyruvate, pH 7.0)

Optimum pH

6.0-7.0

Optimum temperature

35-40°C

Thermal stability

below 45°C (pH 7.0, 15min)

Stability

Store at -20°C

Inhibitors

Ag⁺, Hg⁺⁺, SH-reagents

Synonyms

Lactate dehydrogenase; EC 1.1.1.27; LDH; LD

"LDH" Total Products Page

Enzymes

Catalog	Product Name	EC No.	CAS No.	Source	Price
NATE-1793	L-Lactate Dehydrogenase (Crude Enzyme)	EC 1.1.1.27	9001-60-9	E. coli	Inquiry
NATE-1681	Native Human Lactate Dehydrogenase	EC 1.1.1.27	9001-60-9	Human Muscle	Inquiry
NATE-1680	Native Human Lactate Dehydrogenase	EC 1.1.1.27	9001-60-9	Human Heart	Inquiry
NATE-1105	L-Lactate Dehydrogenase from Porcine, Recombinant	EC 1.1.1.27	9001-60-9	Porcine	Inquiry

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