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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
1
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pubmed:dateCreated |
1976-12-1
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pubmed:abstractText |
Glycogen synthase a was purified over 500-fold by a procedure which involved solubilisation of the enzyme from a protein-glycogen complex by the action of endogenous phosphorylase and debranching enzyme, followed by DEAE-cellulose chromatography, and either gel filtration on Sepharose 4B or fractionation with polyethylene glycol. 15 mg of protein could be obtained from 1000 g of muscle in five days, corresponding to a yield of 20%. The purity was over 90% as judged by gel electrophoresis and ultracentrifugal analysis. The amino acid composition was determined and the absorption coefficient, A1%280 NM, measured refractiometrically was 13.4. Glycogen synthase a sedimented as two major components, both of which were enzymatically active. The smaller species (13.3 S) comprised 85% and the larger species (19.OS) 15% of the material. The molecular weight of the 13.3-S component was determined to be 377000 by high-speed sedimentation equilibrium centrifugation. The subunit molecular weight measured by gel electrophoresis in the presence of sodium dodecylsulphate was 88 000 indicating that the 13.3-S species is a tetramer. The properties of the enzyme are compared to those obtained by other workers.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Sep
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pubmed:issn |
0014-2956
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
68
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
21-30
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pubmed:dateRevised |
2007-7-23
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pubmed:meshHeading |
pubmed-meshheading:823021-Amino Acids,
pubmed-meshheading:823021-Animals,
pubmed-meshheading:823021-Carbohydrates,
pubmed-meshheading:823021-Glycogen Synthase,
pubmed-meshheading:823021-Molecular Weight,
pubmed-meshheading:823021-Muscles,
pubmed-meshheading:823021-Organophosphorus Compounds,
pubmed-meshheading:823021-Rabbits
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pubmed:year |
1976
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pubmed:articleTitle |
The purification and properties of rabbit skeletal muscle glycogen synthase.
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pubmed:publicationType |
Journal Article
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