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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Growth and the cell cycle of the yeast Saccharomyces cerevisiae. II. Relief of cell-cycle constraints allows accelerated cell divisions.

For cells of the yeast Saccharomyces cerevisiae, conditions which limit S phase or nuclear division allow steady-state division kinetics without significant effects on growth. Such cells become unusually large. When large proliferating cells were released from any one of several conditions which slowed progress through the DNA-division sequence, they underwent a period of accelerated division with a cell cycle devoid of a G1 interval, as evidenced by low proportions of unbudded cells and shifted execution points for the 'start' cell cycle step. We interpret these results to mean that when released from conditions slowing the DNA-division sequence these large cells continue for several cell doublings to accumulate mass fast enough to eliminate the need for a G1 interval. The results support the conclusion that the yeast G1 interval is the for most part only an interval of growth.[1]


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