On the molecular weights of the three nonidentical subunits of citrate lyase from Klebsiella aerogenes. 1975

D E Carpenter, and M Singh, and E G Richards, and P A Srere

The molecular weights of the three nonidentical subunits of citrate lyase of Klebsiella aerogenes have been determined by three methods: sedimentation equilibrium in 6 M guanidinium chloride, sodium dodecyl sulfate gel electrophoresis, and gel filtration on 6 percent agarose column in 6 M guanidinium chloride. The molecular weights of the subunits, names I, II, and III (or acyl carrier protein) in order of elution from the agarose column, were 54,500, 32,000, and 11,000, respectively. The agarose-guanidine column provided a nearly complete separation of the three subunits. The molecular weight of the native enzyme was found by sedimentation equilibrium to be 520,000 plus or minus 10,000. The uncertainties in the molecular weights of the enzyme and its subunits did not permit a valid postulation of the subunit composition.

UI MeSH Term Description Entries
D007652 Oxo-Acid-Lyases Enzymes that catalyze the cleavage of a carbon-carbon bond of a 3-hydroxy acid. (Dorland, 28th ed) EC 4.1.3. Ketoacid-Lyases,Ketoacid Lyases,Oxo Acid Lyases
D007709 Klebsiella A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria whose organisms arrange singly, in pairs, or short chains. This genus is commonly found in the intestinal tract and is an opportunistic pathogen that can give rise to bacteremia, pneumonia, urinary tract and several other types of human infection.
D008970 Molecular Weight The sum of the weight of all the atoms in a molecule. Molecular Weights,Weight, Molecular,Weights, Molecular
D010455 Peptides Members of the class of compounds composed of AMINO ACIDS joined together by peptide bonds between adjacent amino acids into linear, branched or cyclical structures. OLIGOPEPTIDES are composed of approximately 2-12 amino acids. Polypeptides are composed of approximately 13 or more amino acids. PROTEINS are considered to be larger versions of peptides that can form into complex structures such as ENZYMES and RECEPTORS. Peptide,Polypeptide,Polypeptides
D011487 Protein Conformation The characteristic 3-dimensional shape of a protein, including the secondary, supersecondary (motifs), tertiary (domains) and quaternary structure of the peptide chain. PROTEIN STRUCTURE, QUATERNARY describes the conformation assumed by multimeric proteins (aggregates of more than one polypeptide chain). Conformation, Protein,Conformations, Protein,Protein Conformations
D002847 Chromatography, Agarose A method of gel filtration chromatography using agarose, the non-ionic component of agar, for the separation of compounds with molecular weights up to several million. Chromatography, Sepharose,Agarose Chromatography,Sepharose Chromatography,Agarose Chromatographies,Chromatographies, Agarose,Chromatographies, Sepharose,Sepharose Chromatographies
D002951 Citrates Derivatives of CITRIC ACID.
D004591 Electrophoresis, Polyacrylamide Gel Electrophoresis in which a polyacrylamide gel is used as the diffusion medium. Polyacrylamide Gel Electrophoresis,SDS-PAGE,Sodium Dodecyl Sulfate-PAGE,Gel Electrophoresis, Polyacrylamide,SDS PAGE,Sodium Dodecyl Sulfate PAGE,Sodium Dodecyl Sulfate-PAGEs
D006146 Guanidines A family of iminourea derivatives. The parent compound has been isolated from mushrooms, corn germ, rice hulls, mussels, earthworms, and turnip juice. Derivatives may have antiviral and antifungal properties.
D012967 Sodium Dodecyl Sulfate An anionic surfactant, usually a mixture of sodium alkyl sulfates, mainly the lauryl; lowers surface tension of aqueous solutions; used as fat emulsifier, wetting agent, detergent in cosmetics, pharmaceuticals and toothpastes; also as research tool in protein biochemistry. Sodium Lauryl Sulfate,Irium,Dodecyl Sulfate, Sodium,Lauryl Sulfate, Sodium,Sulfate, Sodium Dodecyl,Sulfate, Sodium Lauryl

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