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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Erickson, H. P. |
| Abstract | Neuronal microtubules have been reassembled from brain tissue homogenates and purified. In reassembly from purified preparations, one of the first structures formed was a flat sheet, consisting of up to 13 longitudinal filaments, which was identified as an incomplete microtubule wall. Electron micrographs of these flat sheets and intact microtubules were analyzed by optical diffraction, and the surface lattice on which the subunits are arranged was determined to be a 13 filament, 3-start helix. A similar, and probably identical, lattice was found for outer-doublet microtubules. Finally, a 2-D image of the structure and arrangement of the microtubule subunits was obtained by processing selected images with a computer filtering and averaging system. The 40 x 50 Å morphological subunit, which has previously been seen only as a globular particle and identified as the 55,000-dalton tubulin monomer, is seen in this higher resolution reconstructed image to be elongated, and split symmetrically by a longitudinal cleft into two lobes. |
| ISSN | 00219525 |
| e-ISSN | 15408140 |
| Journal | The Journal of Cell Biology |
| Issue Number | 1 |
| Volume Number | 60 |
| Language | English |
| Publisher | Rockefeller University Press (United States) |
| Publisher Date | 1974-01-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Microtubules Neurons Cytology Animals Brain Brain Chemistry Electrophoresis, Polyacrylamide Gel Fourier Analysis Microscopy, Electron Molecular Conformation Nerve Tissue Proteins Protein Conformation Swine Cell Biology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Cell Biology Medicine |
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