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Lamin B constitutes an intermediate filament attachment site at the nuclear envelope.
| Content Provider | Scilit |
|---|---|
| Author | Georgatos, Spyros Blobel, Giinter |
| Copyright Year | 1987 |
| Description | We found that urea extraction of turkey erythrocyte nuclear envelopes abolished their ability to bind exogenous 125I-vimentin, while, at the same time, it removed the nuclear lamins from the membranes. After purification of the lamins from such urea extracts, a specific binding between isolated vimentin and lamin B, or a lamin A + B hetero-oligomer, was detected by affinity chromatography. Similar analysis revealed that the 6.6-kD vimentin tail piece was involved in this interaction. By other approaches (quantitative immunoprecipitation, rate zonal sedimentation, turbidometric assays) a substoichiometric lamin B-vimentin binding was determined under in vitro conditions. It was also observed that anti-lamin B antibodies but not other sera (anti-lamin A, anti-ankyrin, preimmune) were able to block 70% of the binding of 125I-vimentin to native, vimentin-depleted, nuclear envelopes. These data, which were confirmed by using rat liver nuclear lamins, indicate that intermediate filaments may be anchored directly to the nuclear lamina, providing a continuous network connecting the plasma membrane skeleton with the karyoskeleton of eukaryotic cells. |
| Related Links | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2114936/pdf http://jcb.rupress.org/content/105/1/117.full.pdf |
| Ending Page | 125 |
| Page Count | 9 |
| Starting Page | 117 |
| DOI | 10.1083/jcb.105.1.117 |
| Journal | Journal of Cell Biology |
| Issue Number | 1 |
| Volume Number | 105 |
| Language | English |
| Publisher | Rockefeller University Press |
| Publisher Date | 1987-07-01 |
| Access Restriction | Open |
| Subject Keyword | Biochemistry and Molecular Biology Antibodies Urea Vimentin Intermediate Filament 125i Filaments Nuclear Lamins Nuclear Envelopes Journal: Journal of Cell Biology (Vol- 105, Issue- 1) |
| Content Type | Text |