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PMID:6094012
From GONUTS
Hiraoka, Y, Toda, T and Yanagida, M (1984) The NDA3 gene of fission yeast encodes beta-tubulin: a cold-sensitive nda3 mutation reversibly blocks spindle formation and chromosome movement in mitosis.Cell 39:349-58
| Abstract | The cells of a cold-sensitive mutant nda3-KM311 of the fission yeast Schizosaccharomyces pombe were arrested highly synchronously at a step similar to mitotic prophase when incubated at a restrictive temperature. DAPI staining and indirect immunofluorescence microscopy showed three condensed chromosomes but no spindle. Six minutes after the temperature shifted to a permissive one, the spindle appeared and elongated. The chromosomes were separated at a constant speed (relative velocity 1 micron/min), and the spindle disappeared after the chromosomes reached opposite ends of the cell. The NDA3 gene of S. pombe was cloned by transformation. The 2.6 kb Hind III genomic DNA that complemented the nda3 mutations had only one coding frame split with five short introns. The predicted amino acid sequence contained 448 residues, and was 75% homologous to that of chicken beta-tubulin. |
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