Figure 1.

A signaling pathway that controls yeast meiotic initiation. Proteins enclosed in an oval are model variables. Phosphorylated proteins are labeled with the letter P in a grey circle. Solid lines represent phosphorylation, dephosphorylation, or degradation; dashed lines indicate regulatory interactions between proteins. The arrow at the end of a dashed line depicts activation; the bar at the end of a dashed line shows repression.

Ray et al. BMC Systems Biology 2013 7:37   doi:10.1186/1752-0509-7-37
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