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Gene Review

ASE1  -  Ase1p

Saccharomyces cerevisiae S288c

Synonyms: Anaphase spindle elongation protein, YOR058C, YOR29-09
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High impact information on ASE1

  • In addition, loss of ASE1 function destabilized telophase spindles, and expression of a nondegradable Ase1 mutant delayed spindle disassembly [1].
  • Ase1 was degraded when cells exited from mitosis and entered G1 [1].
  • A component of the Saccharomyces cerevisiae spindle, Ase1, was observed to undergo cell cycle-specific degradation mediated by the cyclosome, or anaphase promoting complex (APC) [1].
  • APC-mediated proteolysis of Ase1 and the morphogenesis of the mitotic spindle [1].
  • Kin4 is active in cells with mispositioned nuclei and predominantly localizes to mother cells, where it is ideally situated to inhibit MEN signaling at spindle pole bodies (SPBs) when anaphase spindle elongation occurs within the mother cell [2].

Biological context of ASE1


Anatomical context of ASE1

  • In cells whose microtubule cytoskeleton has been perturbed, anaphase spindle elongation often occurs entirely within the mother cell, and the post-anaphase nuclear migration checkpoint introduces a compensatory delay of cytokinesis until one pole of the anaphase nucleus enters the bud [7].
  • Since ectopic expression of proteolysis-resistant Cin8, Kip1 or Ase1 is sufficient for SPB separation even in the absence of Cdc28-Clb activity, we suggest that stabilization of these mechanical force-generating proteins is the predominant role of Cdc28-Clb in centrosome separation [8].

Regulatory relationships of ASE1


Other interactions of ASE1


Analytical, diagnostic and therapeutic context of ASE1


  1. APC-mediated proteolysis of Ase1 and the morphogenesis of the mitotic spindle. Juang, Y.L., Huang, J., Peters, J.M., McLaughlin, M.E., Tai, C.Y., Pellman, D. Science (1997) [Pubmed]
  2. The protein kinase Kin4 inhibits exit from mitosis in response to spindle position defects. D'Aquino, K.E., Monje-Casas, F., Paulson, J., Reiser, V., Charles, G.M., Lai, L., Shokat, K.M., Amon, A. Mol. Cell (2005) [Pubmed]
  3. Two microtubule-associated proteins required for anaphase spindle movement in Saccharomyces cerevisiae. Pellman, D., Bagget, M., Tu, Y.H., Fink, G.R., Tu, H. J. Cell Biol. (1995) [Pubmed]
  4. Yeast Dam1p has a role at the kinetochore in assembly of the mitotic spindle. Jones, M.H., He, X., Giddings, T.H., Winey, M. Proc. Natl. Acad. Sci. U.S.A. (2001) [Pubmed]
  5. PRC1: a human mitotic spindle-associated CDK substrate protein required for cytokinesis. Jiang, W., Jimenez, G., Wells, N.J., Hope, T.J., Wahl, G.M., Hunter, T., Fukunaga, R. Mol. Cell (1998) [Pubmed]
  6. Sumoylation of the budding yeast kinetochore protein Ndc10 is required for Ndc10 spindle localization and regulation of anaphase spindle elongation. Montpetit, B., Hazbun, T.R., Fields, S., Hieter, P. J. Cell Biol. (2006) [Pubmed]
  7. Cell-cycle checkpoints that ensure coordination between nuclear and cytoplasmic events in Saccharomyces cerevisiae. Lew, D.J. Curr. Opin. Genet. Dev. (2000) [Pubmed]
  8. Cdk1 regulates centrosome separation by restraining proteolysis of microtubule-associated proteins. Crasta, K., Huang, P., Morgan, G., Winey, M., Surana, U. EMBO J. (2006) [Pubmed]
  9. A novel role of the budding yeast separin Esp1 in anaphase spindle elongation: evidence that proper spindle association of Esp1 is regulated by Pds1. Jensen, S., Segal, M., Clarke, D.J., Reed, S.I. J. Cell Biol. (2001) [Pubmed]
  10. Mitotic spindle function in Saccharomyces cerevisiae requires a balance between different types of kinesin-related motors. Saunders, W., Lengyel, V., Hoyt, M.A. Mol. Biol. Cell (1997) [Pubmed]
  11. A pathway containing the Ipl1/aurora protein kinase and the spindle midzone protein Ase1 regulates yeast spindle assembly. Kotwaliwale, C.V., Frei, S.B., Stern, B.M., Biggins, S. Dev. Cell (2007) [Pubmed]
  12. MIF2 is required for mitotic spindle integrity during anaphase spindle elongation in Saccharomyces cerevisiae. Brown, M.T., Goetsch, L., Hartwell, L.H. J. Cell Biol. (1993) [Pubmed]
  13. Simultaneous expression of both MAT loci in haploid cells suppresses mutations in yeast microtubule motor genes. Steinberg-Neifach, O., Eshel, D. Mol. Gen. Genet. (2000) [Pubmed]
  14. The molecular function of Ase1p: evidence for a MAP-dependent midzone-specific spindle matrix. Microtubule-associated proteins. Schuyler, S.C., Liu, J.Y., Pellman, D. J. Cell Biol. (2003) [Pubmed]
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