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  • DNA repair  (1)
  • Mitotic spindle assembly  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Cloning and mapping of CDC40, a Saccharomyces cerevisiae gene with a role in DNA repair (1985)
    Springer
    Current genetics 9 (1985), S. 253-257 
    Details
    ISSN: 1432-0983
    Keywords: Saccharomyces cerevisiae ; CDC40 ; DNA repair ; Cloning ; Mapping
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The cdc40 mutation has been previously shown to be a heat-sensitive cell-division-cycle mutation. At the restrictive temperature, cdc40 cells arrest at the end of DNA replication, but retain sensitivity to hydroxyurea (Kassir and Simchen 1978). The mutation has also been shown to affect commitment to meiotic recombination and its realization. Here we show that mutant cells are extremely sensitive to Methyl-Methane Sulfonate (MMS) when the treatment is carried out at restrictive temperature. Incubation at 37 °C prior to, or after MMS treatment at 23 °C, does not result in lower survival. It is concluded that the CDC40 gene product has a role in DNA repair, possibly holding together or protecting the DNA during the early stages of repair. The CDC40 gene was cloned on a 2.65 kb DNA fragment. A 2 μ plasmid carrying the gene was integrated and mapped to chromosome IV, between trp4 and ade8, by the method of marker loss. Conventional tetrad analysis has shown cdc40 to map 1.7 cM from trp4.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00419952
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    The role ofSaccharomyces cerevisiae Cdc40p in DNA replication and mitotic spindle formation and/or maintenance (1995)
    Springer
    Molecular genetics and genomics 247 (1995), S. 123-136 
    Details
    ISSN: 1617-4623
    Keywords: CDC40 ; DNA replication ; Mitotic spindle assembly ; cyclins ; Saccharomyces cerevisiae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Successful progression through the cell cycle requires the coupling of mitotic spindle formation to DNA replication. In this report we present evidence suggesting that, inSaccharomyces cerevisiae, theCDC40 gene product is required to regulate both DNA replication and mitotic spindle formation. The deduced amino acid sequence ofCDC40 (455 amino acids) contains four copies of a β-transducin-like repeat. Cdc40p is essential only at elevated temperatures, as a complete deletion or a truncated protein (deletion of the C-terminal 217 amino acids in thecdc40-1 allele) results in normal vegetative growth at 23°C, and cell cycle arrest at 36°C. In the mitotic cell cycle Cdc40p is apparently required for at least two steps: (1) for entry into S phase (neither DNA synthesis, nor mitotic spindle formation occurs at 36°C and (2) for completion of S-phase (cdc40::LEU2 cells cannot complete the cell cycle when returned to the permissive temperature in the presence of hydroxyurea). The role of Cdc40p as a regulatory protein linking DNA synthesis, spindle assembly/maintenance, and maturation promoting factor (MPF) activity is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00705642
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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