Modeling the Budding Yeast Cell Cycle

GAL-CLB5

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test user =
test db =

Simulation:

Change of parameters: ksb5'=0.012, MDT=150.
Length of G1 phase: 101.9 min.
Mass at division: 1.82

Experiments:

Schwob, E. and Nasmyth, K.(1993). CLB5 and CLB6, a new pair of B cyclins involved in DNA replication in Saccharomyces cerevisiae. Genes Dev. 7:1160-1175.
[Abstract] [Article]
Experimental results: Fig. 6C, GAL-CLB5 did not cause advancement of CLN1 transcription, nor premature DNA replication, as compared to wild type.
Comments: In simulation, the duration of the G1 phase for GAL-CLB5 mutants (102 min) is not advanced when comparing with that of the WT cells in the same medium (108 min). The experiment suggests that Sic1 is a strong inhibitor of Clb5.

Because sic1∆ cells (which still has functional Cdc6 in G1) show advance in DNA synthesis by 30 min, it indicates that Cdc6 is not as strong an inhibitor to Clb5.