The preparation of crystalline human l-lactate–nicotinamide–adenine dinucleotide oxidoreductase isoenzyme 1 involving preparative polyacrylamide-gel electrophoresis
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چکیده
منابع مشابه
Lactate dehydrogenase isoenzymes from human heart: separation by preparative gel electrophoresis; and a crystalline preparation of isoenzyme--1.
A flat-bed apparatus for preparative gel electrophoresis with intermittent elution [l-31 permits the collection simultaneously of anodeand cathode-migrating components of a mixnue. We employed this first for the separation of isoenzymes of lactate dehydrogenase (EC 1.1.1.27) in crude tissue extracts. Enzyme activity was determined by reaction rate observed at 340 nm in the presence of 0.14 mM N...
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Preparative polyacrylamide gel electrophoresis has been used in the final stages of purification to prepare horse serum cholinesterase which was at least 9.5% pure, as judged by analytical polyacrylamide gel electrophoresis. The starting material, already purified about 109-fold by the Strelitz method, was purified an additional 89-fold by the procedure. The method involved Sephadex G-ZOO and S...
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Preparative polyacrylamide gel electrophoresis has been used to purify the enterotoxin of Clostridium perfringens from Sephadex G-100 extracts. Purified toxin of high specific activity was eluted in 1 to 3 h, depending upon the length of the acrylamide gel used. Recovery of biological activity with this technique ranged from 80 to 90%. The purity and physical characteristics of the toxin were s...
متن کاملContinuous preparative gel electrophoresis.
Electrophoresis is widely used as a separative technique, particularly in protein chemistry. In some respects gelatinous media have an advantage over others as support media for electrophoresis, perhaps most obviously when a gel matrix of molecular dimensions is employed, allowing the simultaneous use of two properties for separation of the particles of interest-size and surface charge density....
متن کاملIsolation and properties of the electrophoretic components of human growth hormone by Sephadex-gel filtration and preparative polyacrylamide-gel electrophoresis.
1. Human growth hormone was prepared from acetone-dried residues after extraction of gonadotrophins from pituitary glands. 2. Crude growth hormone was purified by gel filtration on Sephadex, resulting in a product that is soluble in water or 0.5% sodium chloride. It is painless on injection and shows a twofold increase in biological potency. Aggregation of growth hormone on Sephadex columns can...
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ژورنال
عنوان ژورنال: Biochemical Journal
سال: 1974
ISSN: 0264-6021
DOI: 10.1042/bj1430453