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Mannitol Dehydrogenase from Leuconostoc mesenteroides

SIGMA/M9532 - lyophilized powder, ≥60 units/mg protein

Synonym: polyol dehydrogenases; Mannitol:NAD oxidoreductase

CAS Number: 9001-65-4
MDL Number: MFCD00131575
Product Type: Chemical

Catalog Number PKG Qty. Price Quantity
45-M9532-5UN 5 units
$241.00
1/EA
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45-M9532-50UN 50 units
$1110.00
1/EA
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Mechanism of Mannitol Dehydrogenase: D(-)Fructose + β-NADH → Mannitol Dehydrogenase→ D-Mannitol + β-NAD

 

form lyophilized powder
mol wt 136 kDa
Quality Level 200 
specific activity ≥60 units/mg protein
storage temp. −20°C
Analysis Note: Assayed according to the method of Yamanaka, Meth. Enzymol., 41(B), 138 (1975).
Application: Can be used for the production of D-mannitol.
Application: It has been used in a study to assess glucosylglycerol and glucosylglycerate as enzyme stabilizers.
Application: This preparation is useful in the determination of mannitol in urine.
Biochem/physiol Actions: Mannitol dehydrogenase (MDH) helps to catalyze the pyridine nucleotide-dependent oxidation of D-mannitol to D-fructose. Mannitol dehydrogenase (MDH) obtained from L. mesenteroides is highly specific for the conversion fructose and mannitol.
General description: Mannitol dehydrogenase (MDH) is a NAD-dependent enzyme, obtained from several organisms like, Lactobacillus brevis, Leuconostoc mesenteroides, Absidia glauca and Rhodococcus. MDH obtained from L. mesenteroides exhibits similarity in sequence with the medium-chain dehydrogenase/reductase protein family. It also contains four identical subunits of about 38 kDa in size.
General description: Mannitol dehydrogenase is a cytoplasmic enzyme whose primary role is the regulation of intracellular levels of the sugar alcohol mannitol in plants. It catalyzes the pyridine nucleotide dependent reduction of fructose to mannitol.
General description: The molecular weight of mannitol dehydrogenase is 136 kDa.
Other Notes: One unit will reduce 1.0 μmole of D-fructose per min in the presence of NADH at pH 5.3 at 30°C. One unit of enzyme, as defined above, is equivalent to approximately 1.8 units of enzyme, as described by Lunn et al., one unit will oxidize 1.0 μmole of D-mannitol per min in the presence of NAD at pH 8.6 at 40°C.
Physical form: Lyophilized powder containing buffer salts, potassium phosphate, and dithiothreitol
Preparation Note: Partially purified
RIDADR NONH for all modes of transport
WGK Germany WGK 3
Flash Point(F) Not applicable
Flash Point(C) Not applicable
activity specific activity: ≥60 units/mg protein
Storage Temp. −20°C
Enzyme Commission (EC) Number 1.1.1.67   ( BRENDA  | IUBMB  )
UNSPSC 12352204

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