Synchronization of S Phase in Schizosaccharomyces pombe Cells by Transient Exposure to M-Factor Pheromone.

A well-characterized S phase, a unicellular lifestyle, and a plethora of mutations in key components of DNA metabolism make fission yeast a particularly attractive system in which to study DNA replication. However, synchronization of passage through a normal S phase has proved challenging. This protocol describes how combining nitrogen starvation with M-factor mating pheromone treatment presents a highly effective method for synchronizing passage through an ostensibly normal S phase.