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Identification of an alpha-tubulin mutant of fission yeast from gamma-tubulin-interacting protein screening: genetic evidence for alpha-/gamma-tubulin interaction.

gamma-Tubulin has been determined to be a central element of microtubule nucleation and, thus, indispensable for cellular organization of the microtubule. Utilizing the fact that human gamma-tubulin can function in the fission yeast Schizosaccharomyces pombe, we have generated a unique mutant screening procedure which can specifically select mutants of genes encoding gamma-tubulin-interacting proteins. One of the isolated mutants, cs76, turned out to carry a mutation in the alpha 1-tubulin gene (nda2(+)). This result suggests a direct interaction between the alpha- and gamma-tubulins. We located the mutation site in the nda2 gene and characterized the mutant phenotype. Our results demonstrate the importance of the alpha-/gamma-tubulin interaction in microtubule nucleation and should complement previous knowledge.

Pubmed ID: 11082048


  • Takeoka A
  • Shimizu M
  • Horio T


Journal of cell science

Publication Data

December 29, 2000

Associated Grants


Mesh Terms

  • Alleles
  • Amino Acid Sequence
  • Animals
  • Humans
  • Models, Molecular
  • Molecular Sequence Data
  • Mutagenesis
  • Phenotype
  • Protein Structure, Secondary
  • Schizosaccharomyces
  • Swine
  • Tubulin