Biomaterial Database

Purification and properties of crystalline 3-hydroxybutyrate dehydrogenase from Rhodopseudomonas spheroides. 1967

H U Bergmeyer, and K Gawehn, and H Klotzsch, and H A Krebs, and D H Williamson

1. The purification and crystallization of 3-hydroxybutyrate dehydrogenase from extracts of Rhodopseudomonas spheroides is described. 2. The molecular weight was calculated to be 85000 by sedimentation equilibrium. 3. Although the enzyme is stable at 0-4 degrees , dilute solutions are rapidly inactivated at 37 degrees ; NADH(2) or Ca(2+) ions prevent this inactivation. 4. The enzyme is extremely sensitive to mercurials, but can be protected by NADH(2) or Ca(2+) ions. 5. From studies on p-hydroxymercuribenzoate binding it is estimated that the enzyme contains 5-6 moles of rapidly reacting thiol groups/mole. 6. d-Lactate and dl-2-hydroxybutyrate are competitive inhibitors of d-3-hydroxybutyrate oxidation. 7. The properties of the crystalline enzyme are compared with those of 3-hydroxybutyrate dehydrogenase preparations from other sources.

UI	MeSH Term	Description	Entries
D007700	Kinetics	The rate dynamics in chemical or physical systems.
D008970	Molecular Weight	The sum of the weight of all the atoms in a molecule.	Molecular Weights,Weight, Molecular,Weights, Molecular
D009243	NAD	A coenzyme composed of ribosylnicotinamide 5'-diphosphate coupled to adenosine 5'-phosphate by pyrophosphate linkage. It is found widely in nature and is involved in numerous enzymatic reactions in which it serves as an electron carrier by being alternately oxidized (NAD+) and reduced (NADH). (Dorland, 27th ed)	Coenzyme I,DPN,Diphosphopyridine Nucleotide,Nadide,Nicotinamide-Adenine Dinucleotide,Dihydronicotinamide Adenine Dinucleotide,NADH,Adenine Dinucleotide, Dihydronicotinamide,Dinucleotide, Dihydronicotinamide Adenine,Dinucleotide, Nicotinamide-Adenine,Nicotinamide Adenine Dinucleotide,Nucleotide, Diphosphopyridine
D002845	Chromatography	Techniques used to separate mixtures of substances based on differences in the relative affinities of the substances for mobile and stationary phases. A mobile phase (fluid or gas) passes through a column containing a stationary phase of porous solid or liquid coated on a solid support. Usage is both analytical for small amounts and preparative for bulk amounts.	Chromatographies
D002850	Chromatography, Gel	Chromatography on non-ionic gels without regard to the mechanism of solute discrimination.	Chromatography, Exclusion,Chromatography, Gel Permeation,Chromatography, Molecular Sieve,Gel Filtration,Gel Filtration Chromatography,Chromatography, Size Exclusion,Exclusion Chromatography,Gel Chromatography,Gel Permeation Chromatography,Molecular Sieve Chromatography,Chromatography, Gel Filtration,Exclusion Chromatography, Size,Filtration Chromatography, Gel,Filtration, Gel,Sieve Chromatography, Molecular,Size Exclusion Chromatography
D003460	Crystallization	The formation of crystalline substances from solutions or melts. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)	Crystalline Polymorphs,Polymorphism, Crystallization,Crystal Growth,Polymorphic Crystals,Crystal, Polymorphic,Crystalline Polymorph,Crystallization Polymorphism,Crystallization Polymorphisms,Crystals, Polymorphic,Growth, Crystal,Polymorph, Crystalline,Polymorphic Crystal,Polymorphisms, Crystallization,Polymorphs, Crystalline
D006863	Hydrogen-Ion Concentration	The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH	pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D006884	Hydroxybutyrate Dehydrogenase		3-Hydroxybutyrate Dehydrogenase,D-3-Hydroxybutyrate Dehydrogenase,D-beta-Hydroxybutyrate Dehydrogenase,3 Hydroxybutyrate Dehydrogenase,D 3 Hydroxybutyrate Dehydrogenase,D beta Hydroxybutyrate Dehydrogenase,Dehydrogenase, 3-Hydroxybutyrate,Dehydrogenase, D-3-Hydroxybutyrate,Dehydrogenase, D-beta-Hydroxybutyrate,Dehydrogenase, Hydroxybutyrate
D000963	Antimetabolites	Drugs that are chemically similar to naturally occurring metabolites, but differ enough to interfere with normal metabolic pathways. (From AMA Drug Evaluations Annual, 1994, p2033)	Antimetabolite
D012241	Rhodopseudomonas	A genus of gram-negative, rod-shaped, phototrophic bacteria found in aquatic environments. Internal photosynthetic membranes are present as lamellae underlying the cytoplasmic membrane.