Balanced biosynthesis and trigger threshold resulting in a double adder mechanism of cell size control

Leilei Li

Table 2. Variables definitions.

Variables Symbol Size at birth Vb Size at division Vd Doubling time τ Size at replication Vi initiation Duration between birth τbi and replication Size per origin at initial Si replication initiation Size per origin at final Sf replication initiation Duration between consecutive τif replication initiations Size per origin at birth Sb Duration between replication τib initiations and birth Cell growth rate $\mu =1/\tau {\rm{ln}}({V}_{d}/{V}_{b})$ Division added size Δ = Vd − Vb Replication added size Δif = Sf − Si Birth-to-initiation added size Λbi = Vi − Vb Initiation-to-birth added size Λib = Sb − Si