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F5152

Sigma-Aldrich

D-Fructose Dehydrogenase from Gluconobacter industrius

lyophilized powder, 400-1,200 units/mg protein

Synonym(s):

D-Fructose:(acceptor) 5-oxidoreductase

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About This Item

CAS Number:
Enzyme Commission number:
MDL number:
UNSPSC Code:
12352204
NACRES:
NA.54

form

lyophilized powder

Quality Level

specific activity

400-1,200 units/mg protein

mol wt

140 kDa

composition

Protein, ≤10% Lowry

shipped in

wet ice

storage temp.

−20°C

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Application

D-fructose dehydrogenase is used as a biosensor to detect the presence of D-fructose.
Fructose dehydrogenase (FDH) is used in a number of basic research projects to examine the electrochemical properties of enzyme-catalyzed electrode reactions called bioelectrocatalysis. D-fructose dehydrogenase has been used in a study that contributed towards a convenient method for measuring rare sugars, monosaccharides, for applications in the bio-industry. A direct electron transfer reaction of d-fructose dehydrogenase adsorbed on a porous carbon electrode surface has been used to describe a batch-type coulometric d-fructose biosensor.

Biochem/physiol Actions

D-fructose dehydrogenase catalyzes the oxidation of D-fructose to 5-keto-D-fructose.
Fructose dehydrogenase (FDH) is a heterotrimeric membrane-bound enzyme commonly seen in various Gluconobacter sp. especially in Gluconobacter japonicus (Gluconobacter industrius). It has a molecular mass of ca. 140 kDa, consisting of subunits I (67kDa), II (51 kDa), and III (20 kDa) and catalyzes the oxidation of D-fructose to produce 5-keto-D-fructose. The enzyme is a flavoprotein-cytochrome c complex with subunits I and II covalently bound to flavin adenine dinucleotide (FAD) and heme C as prosthetic groups, respectively.

Unit Definition

One unit will convert 1.0 μmole D-fructose to 5-ketofructose per min at pH 4.5 at 37 °C.

Physical form

Lyophilized powder containing citrate-phosphate buffer salts, TRITON® X-100, and stabilizer

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Seiya Tsujimura et al.
Analytical chemistry, 81(22), 9383-9387 (2009-11-17)
This paper describes a batch-type coulometric d-fructose biosensor based on direct electron transfer reaction of d-fructose dehydrogenase (FDH) adsorbed on a porous carbon electrode surface. The adsorbed-FDH electrodes catalyzed the electrochemical two-electron oxidation of d-fructose to 5-keto-d-fructose without a mediator.
Ana Dominguez et al.
Revista iberoamericana de micologia, 23(3), 189-191 (2007-01-02)
Several microorganisms are reported to have transfructosylation activity due to fructosyltransferase and/or fructofuranosidase activities. However, the search for other fungi with higher transfructosylation activity remains a challenge. So, a presumptive and indirect colorimetric plate assay for the evaluation of transfructosylation
Takeo Miyake et al.
Journal of the American Chemical Society, 133(13), 5129-5134 (2011-03-12)
Nanostructured carbons have been widely used for fabricating enzyme-modified electrodes due to their large specific surface area. However, because they are random aggregates of particular or tubular nanocarbons, the postmodification of enzymes to their intrananospace is generally hard to control.
Amperometric flow injection determination of fructose with an immobilized fructose 5-dehydrogenase reactor.
K Matsumoto et al.
Analytical chemistry, 58(13), 2732-2734 (1986-11-01)
S Kadow et al.
Biotechnology and bioengineering, 91(2), 154-161 (2005-05-26)
A biosensor for fructose determination was used as basis of an assay for the determination of glucosyltransferase (GTF) activities and applied to monitoring recombinant enzyme production. GTFs catalyze the synthesis of glucans from sucrose leading to the release of fructose.

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