Temperature-sensitive mutant of Schizosaccharomyces pombe exhibiting enhanced radiation sensitivity

A pheromone mutant of Schizosaccharomyces pombe displays nucleolar fragmentation.

Stresses and nutritional starvation are two main external signals for the induction of sex pheromones in the fission yeast Schizosaccharomyces pombe. In an attempt to identify the components involved in transduction of starvation signals, we screened 135 temperature-sensitive (ts) mutants and isolated 6 mutants that induced the pheromone even in the presence of a nitrogen source. These mutants ...

[Schizosaccharomyces pombe].

Temperature-sensitive mutant vaccines.

Many live virus vaccines derived by empirical routes exhibit temperature-sensitive (ts) phenotypes. The live virus vaccines that have been outstandingly successful in controlling poliomyelitis are the prime example of this phenomenon. The three live attenuated strains developed by Sabin were derived from wild-type isolates by rapid sequential passage at high multiplicity of infection in monkey ...

Cloning of the Schizosaccharomyces pombe

Diadenosine 5',5"'-P1,P4-tetraphosphate (Ap4A) asymmetric hydrolase (EC 3.6.1.17) is a specific catabolic enzyme of Ap4A found in Schizosaccharomyces pombe. We have previously described the partial purification ofAp4A hydrolase from S. pombe [Robinson, de la Pefia and Barnes (1993) Biochim. Biophys. Acta 1161, 139-148]. We determined the sequence of the N-terminal 20 amino acids of Ap4A hydrola...

A multifunctional exonuclease from vegetative Schizosaccharomyces pombe cells exhibiting in vitro strand exchange activity.

A 140-kDa polypeptide (p140) has been purified over 2000-fold from vegetative Schizosaccharomyces pombe cells using an assay of homologous pairing and strand exchange between linear double-stranded DNA (dsDNA) and circular single-stranded DNA (ssDNA) in vitro. Electron microscopic analysis of the reaction products showed displacement of one strand of the linear duplex DNA by the circular ssDNA ...