Linked Life Data

1556129

Source:http://linkedlifedata.com/resource/pubmed/id/1556129

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
9
pubmed:dateCreated
1992-5-4
pubmed:abstractText
Dystrophin was purified by immunoaffinity chromatography from detergent-solubilized Torpedo electric organ postsynaptic membranes using monoclonal antibodies. A major doublet of proteins at Mr 58,000 and minor proteins at Mr 87,000, Mr 45,000, and Mr 30,000 reproducibly copurified with dystrophin. The Mr 58,000 and Mr 87,000 proteins were identical to previously described peripheral membrane proteins (Mr 58,000 protein and 87,000 protein) whose muscle homologs are associated with the sarcolemma (Froehner, S. C., Murnane, A. A., Tobler, M., Peng, H. B., and Sealock, R. (1987) J. Cell Biol. 104, 1633-1646; Carr, C., Fischbach, G. D., and Cohen, J. B. (1989) J. Cell Biol. 109, 1753-1764). The copurification of dystrophin and Mr 58,000 protein was shown to be specific, since dystrophin was also captured with a monoclonal antibody against the Mr 58,000 protein but not by several control antibodies. The Mr 87,000 protein was a major component (along with the Mr 58,000 protein) in material purified on anti-58,000 columns, suggesting that the Mr 58,000 protein forms a distinct complex with the Mr 87,000 protein, as well as with dystrophin. Immunofluorescence staining of skeletal and cardiac muscle from the dystrophin-minus mdx mouse with the anti-58,000 antibody was confined to the sarcolemma as in normal muscle but was much reduced in intensity, even though immunoblotting demonstrated that the contents of Mr 58,000 protein in normal and mdx muscle were comparable. Thus, the Mr 58,000 protein appears to associate inefficiently with the sarcolemmal membrane in the absence of dystrophin. This deficiency may contribute to the membrane abnormalities that lead to muscle necrosis in dystrophic muscle.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0021-9258
pubmed:author
pubmed:issnType
Print
pubmed:day
25
pubmed:volume
267
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
6213-8
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed-meshheading:1556129-Animals, pubmed-meshheading:1556129-Antibodies, Monoclonal, pubmed-meshheading:1556129-Chromatography, Affinity, pubmed-meshheading:1556129-Cytoskeletal Proteins, pubmed-meshheading:1556129-Dystroglycans, pubmed-meshheading:1556129-Dystrophin, pubmed-meshheading:1556129-Electric Organ, pubmed-meshheading:1556129-Electrophoresis, Polyacrylamide Gel, pubmed-meshheading:1556129-Fluorescent Antibody Technique, pubmed-meshheading:1556129-Immunoblotting, pubmed-meshheading:1556129-Macromolecular Substances, pubmed-meshheading:1556129-Membrane Glycoproteins, pubmed-meshheading:1556129-Membrane Proteins, pubmed-meshheading:1556129-Mice, pubmed-meshheading:1556129-Molecular Weight, pubmed-meshheading:1556129-Muscles, pubmed-meshheading:1556129-Myocardium, pubmed-meshheading:1556129-Protein Binding, pubmed-meshheading:1556129-Torpedo, pubmed-meshheading:1556129-Vinculin
pubmed:year
1992
pubmed:articleTitle
Association of the Mr 58,000 postsynaptic protein of electric tissue with Torpedo dystrophin and the Mr 87,000 postsynaptic protein.
pubmed:affiliation
Department of Biochemistry, Dartmouth Medical School, Hanover, New Hampshire 03755.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't