TL;DR: A new set of plasmids that serve as templates for the PCR synthesis of fragments that allow a variety of gene modifications that should further facilitate the rapid analysis of gene function in S. cerevisiae.
Abstract: An important recent advance in the functional analysis of Saccharomyces cerevisiae genes is the development of the one-step PCR-mediated technique for deletion and modification of chromosomal genes This method allows very rapid gene manipulations without requiring plasmid clones of the gene of interest We describe here a new set of plasmids that serve as templates for the PCR synthesis of fragments that allow a variety of gene modifications Using as selectable marker the S cerevisiae TRP1 gene or modules containing the heterologous Schizosaccharomyces pombe his5 + or Escherichia coli kan r gene, these plasmids allow gene deletion, gene overexpression (using the regulatable GAL1 promoter), C- or N-terminal protein tagging [with GFP(S65T), GST, or the 3HA or 13Myc epitope], and partial N- or C-terminal deletions (with or without concomitant protein tagging) Because of the modular nature of the plasmids, they allow eYcient and economical use of a small number of PCR primers for a wide variety of gene manipulations Thus, these plasmids should further facilitate the rapid analysis of gene function in S cerevisiae ? 1998 John Wiley & Sons, Ltd
TL;DR: This work shows that the Cdc14 phosphatase triggers mitotic exit by three parallel mechanisms, each of which inhibits Cdk activity, and induces degradation of mitotic cyclins.
TL;DR: A mutation is identified, net1-1, that bypasses the lethality of tem1 delta and is a key component of a multifunctional complex, denoted RENT (for regulator of nucleolar silencing and telophase), that also contains Cdc14 and the silencing regulator Sir2.
TL;DR: The behaviour of esp1 mutants shows in addition that kinase destruction can occur in the absence of anaphase completion, and the execution ofAnaphase and the destruction of CDC28 kinase activity appear to take place independently of one another.
Abstract: It is widely assumed that degradation of mitotic cyclins causes a decrease in mitotic cdc2/CDC28 kinase activity and thereby triggers the metaphase to anaphase transition. Two observations made on the budding yeast Saccharomyces cerevisiae are inconsistent with this scenario: (i) anaphase occurs in the presence of high levels of kinase in cdc15 mutants and (ii) overproduction of a B-type mitotic cyclin causes arrest not in metaphase as previously reported but in telophase. Kinase destruction is therefore implicated in the exit from mitosis rather than the entry into anaphase. The behaviour of esp1 mutants shows in addition that kinase destruction can occur in the absence of anaphase completion. The execution of anaphase and the destruction of CDC28 kinase activity therefore appear to take place independently of one another.
TL;DR: A regulatory network, the FEAR (Cdc fourteen early anaphase release) network that promotes Cdc14 release from the nucleolus during earlyAnaphase is identified and it is proposed that one function of CDC14 released by the Fear network is to stimulate MEN activity.