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| Content Provider | PubMed Central |
|---|---|
| Abstract | In this report I describe a new protein, defined by a monoclonal antibody, which is associated with vimentin filaments in a variety of cultured cells and in skeletal muscle. By immunofluorescence it is absent in smooth muscle, in cells without vimentin, and in neural vimentin containing cells. This protein has a molecular weight of 44,500, a pl of 5, a two-dimensional tryptic peptide fingerprint pattern different from vimentin, is unrelated to actin by Cleveland peptide analysis and by light and electron microscopy, and is not recognized by either a polyclonal antivimentin antibody (Frank, E.D., and L. Warren, 1981, Proc. Natl. Acad. Sci. USA, 78:3020-3024) or a monoclonal antibody against all classes of intermediate filaments (Pruss, R.M., R. Mirsky, M.C. Raff, R. Thorpe, A.J. Dowding, and B.H. Anderton, 1981, Cell, 27:419-428). The protein is resistant to nonionic detergent extraction, is soluble in high salt and can thus be removed from vimentin filaments, but fragments with vimentin in either low salt or anionic detergent and collapses with vimentin in colchicine-treated cells. By light microscopy, the distribution of the protein is indistinguishable from vimentin filaments and appears uniform along them. In contrast, immunoferritin electron microscopy reveals that the molecule is distributed in an intermittent pattern on vimentin filaments. Adopting the terminology of Granger and Lazarides (1980, Cell, 30:263-275), the molecule is called epinemin, meaning "upon filaments." |
| Starting Page | 1891 |
| File Format | |
| ISSN | 15408140 |
| e-ISSN | 15408140 |
| Journal | The Journal of Cell Biology |
| Issue Number | 6 |
| Volume Number | 97 |
| Language | English |
| Publisher | The Rockefeller University Press |
| Publisher Date | 1983-12-01 |
| Access Restriction | Open |
| Rights Holder | The Rockefeller University Press |
| Subject Keyword | Research in Higher Education |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Medicine |
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