H9408
β-Hydroxybutyrate Dehydrogenase from Pseudomonas lemoignei
lyophilized powder, ≥200 units/mg protein
Synonym(s):
(R)-3-Hydroxybutanoate:NAD+ oxidoreductase, 3-HBDH
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About This Item
CAS Number:
UNSPSC Code:
12352204
NACRES:
NA.54
MDL number:
Specific activity:
≥200 units/mg protein
Biological source:
bacterial (Pseudomonas lemoignei)
biological source
bacterial (Pseudomonas lemoignei)
Quality Segment
form
lyophilized powder
specific activity
≥200 units/mg protein
purified by
chromatography
foreign activity
lactic dehydrogenase ≤0.05%, malic dehydrogenase ≤0.1%
storage temp.
−20°C
General description
D-β-hydroxybutyrate dehydrogenase (BDH) is a membrane bound lipid-requiring enzyme.
Application
β-Hydroxybutyrate Dehydrogenase from Pseudomonas lemoignei has been used in coupled assay to confirm the formation of acetoacetate.
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 Paracoccus denitrificans, 3-hydroxybutyrate dehydrogenase plays a key role in the degradation of intracellular polyhydroxybutyrate and polyhydroxyvalerate.
In mammalian systems, β-hydroxybutyrate dehydrogenase is localized on the inner mitochondrial membrane and requires phosphatidyl choline for activity. In contrast, the enzyme from Pseudomonas 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).
Physical form
lyophilized powder containing sucrose, β-NAD and Tris buffer salts
Other Notes
One unit will oxidize 1.0 μmole of D-β-hydroxybutyrate to acetoacetate per min at pH 7.8 at 37 °C.
Storage Class
11 - Combustible Solids
wgk
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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