H8509
β-Hydroxybutyrate Dehydrogenase from Rhodopseudomonas sphaeroides
Type V, lyophilized powder, 250-750 units/mg protein
Synonym(s):
(R)-3-Hydroxybutanoate:NAD+ oxidoreductase, 3-HBDH
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About This Item
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type
Type V
form
lyophilized powder
specific activity
250-750 units/mg protein
purified by
chromatography
foreign activity
lactate dehydrogenase ≤0.05%
malate dehydrogenase ≤0.1%
storage temp.
−20°C
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Application
Suitable for the determination of acetoacetate and D(-)-3-hydroxybutyrate by the method of Williamson, D. H., and Mellanby, J., Methods of Enzymatic Analysis, Bergmeyer, H., ed., 2nd edition, 4, 1836 (1974).
Biochem/physiol Actions
In mammalian systems, β-hydroxybutyrate dehydrogenase is localized on the inner mitochondrial membrane and requires phosphatidyl choline for activity. In contrast, the enzyme from Rhodopseudomonas is a soluble cytosolic enzyme that does not require a phospholipid allosteric activator. The enzyme is required for the utilization of ketone bodies as a source of metabolic energy. It catalyzes the oxidation of 3-hydroxybutyrate to acetoacetate, the first step in the conversion of ketone bodies to citric acid, which is then further metabolized via the tricarboxylic acid cycle (Krebs cycle).
Unit Definition
One unit will oxidize 1.0 μmole of D-β-hydroxybutyrate to acetoacetate per min at pH 7.8 at 37 °C.
Physical form
Lyophilized powder containing Tris buffer salts
Storage Class Code
10 - Combustible liquids
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)
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Michel A Sciotti et al.
Chimia, 64(11), 793-798 (2011-01-05)
Gamma hydroxybutyric acid (GHB) is a regulated therapeutic drug, which naturally occurs in mammalian brain tissues as an intermediate of the GABA (gamma aminobutyric acid) neurotransmitter metabolism. The increasing misuse of GHB as a narcotic or abusing drug in recent
Jörn Oliver Sass
Journal of inherited metabolic disease, 35(1), 23-28 (2011-04-12)
Ketone bodies acetoacetate and 3-hydroxy-n-butyric acid are metabolites derived from fatty acids and ketogenic amino acids such as leucine. They are mainly produced in the liver via reactions catalyzed by the ketogenic enzymes mitochondrial 3-hydroxy-3-methylglutary-coenzyme A synthase and 3-hydroxy-3-methylglutary-coenzyme A
Yanfeng Zhang et al.
Acta biochimica et biophysica Sinica, 43(12), 996-1002 (2011-11-01)
Succinic semialdehyde reductase (SSAR) is an important enzyme involved in γ-aminobutyrate (GABA) metabolism. By converting succinic semialdehyde (SSA) to γ-hydroxybutyrate (GHB), the SSAR facilitates an alternative pathway for GABA degradation. In this study, we identified SSARs from Geobacter sulfurreducens and
Dominik R Weiss et al.
Clinical laboratory, 57(7-8), 523-526 (2011-09-06)
For intrauterine transfusion and some other rare indications, irradiation and washing or adjustment to an elevated haematocrit is necessary. No data are currently available indicating whether irradiation of red blood cell concentrates (RBCs) might impair the mechanical stability of erythrocytes
J M Villarreal et al.
Microbiology (Reading, England), 157(Pt 3), 636-647 (2010-12-15)
Salmonella enterica serovar Typhi (S. Typhi) is the aetiological agent of typhoid fever in humans. This bacterium is also able to persist in its host, causing a chronic disease by colonizing the spleen, liver and gallbladder, in the last of
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