Abstract
A method for preparing large membrane fragments and cell ghosts was developed for uninfected and Rous sarcoma virus-transformed chicken embryo fibroblasts in culture. Membrane proteins were analyzed by electrophoresis in acrylamide gels containing sodium dodecyl sulfate. A major amino-acid-containing component of uninfected cell membranes was greatly diminished in amount or absent in membranes of virus-transformed cells. This component, called MP-1, had an electrophoretic mobility in sodium dodecyl sulfate-containing gels similar to that of a protein of a mol wt of 1.42 x 10(5). MP-1 was not altered by changes in cell growth rate or in cells infected with the nontransforming virus RAV-1.
MeSH Terms
Amino Acids
Animals
Avian Sarcoma Viruses/growth & development
Carbon Radioisotopes
Cell Fractionation
Cell Membrane/analysis
Cell Transformation, Neoplastic
Cells, Cultured
Centrifugation, Density Gradient
Chick Embryo
Electrophoresis, Polyacrylamide Gel
Fibroblasts
Fucose
Glycoproteins/analysis
Molecular Weight
Neoplasm Proteins/analysis
Proteins/analysis
Satellite Viruses/growth & development
Sodium Dodecyl Sulfate
Spectrophotometry
Thymidine
Tritium
Chemicals
Amino Acids
Carbon Radioisotopes
Glycoproteins
Neoplasm Proteins
Proteins
Tritium
Fucose
Sodium Dodecyl Sulfate
Thymidine
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Bussell R H
Robinson W S
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