α-coefficients of transcription factors regulating the cell cycle. A heat map of the α-coefficients of the canonical transcription factors during two periods of the cell cycle. Red indicates α > 0 (transcription factor generally bound to over-expressed genes), green indicates α < 0 (transcription factor generally bound to under-expressed genes), and black indicates α = 0. Factors are ordered based on their phase in the long-term asymptotic behavior of our dynamical model. The α-coefficients have been quantile normalized for each factor across the time points.