H8509
β-Hydroxybutyrate Dehydrogenase from Rhodopseudomonas sphaeroides
Type V, lyophilized powder, 250-750 units/mg protein
Sinónimos:
(R)-3-Hydroxybutanoate:NAD+ oxidoreductase, 3-HBDH
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About This Item
Productos recomendados
type
Type V
Quality Level
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
10 - Combustible liquids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
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W Hugo Ramos-Vera et al.
Journal of bacteriology, 193(5), 1201-1211 (2010-12-21)
Two autotrophic carbon fixation cycles have been identified in Crenarchaeota. The dicarboxylate/4-hydroxybutyrate cycle functions in anaerobic or microaerobic autotrophic members of the Thermoproteales and Desulfurococcales. The 3-hydroxypropionate/4-hydroxybutyrate cycle occurs in aerobic autotrophic Sulfolobales; a similar cycle may operate in autotrophic
J Nie et al.
Scandinavian journal of medicine & science in sports, 21(5), 625-629 (2010-05-13)
This study examined the response of serum biomarkers of cardiac and skeletal muscle damage at rest and after a routine workout of 21 km run in 12 male adolescent (16.2±0.6 years) long-distance runners. Biomarkers of cardiac [troponins (cTnT, cTnI), creatine
Lara Hasan et al.
Therapeutic drug monitoring, 33(6), 757-765 (2011-11-23)
Gamma-hydroxybutyric acid (GHB) has become one of the most dangerous illicit drugs of abuse today. It is used as a recreational and date rape drug because of its depressant effect on the central nervous system, which may cause euphoria, amnesia
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
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
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