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

Leilei Li

Figure 1. A coarse-grained model of the cell. Extracellular food is transported into the cell and is decomposed into amino acids (AA) by metabolic proteins. Amino acids are assembled into various proteins by ribosomes and are allocated to metabolic proteins, ribosomes, and housekeeping proteins reasonably to get a maximal growth rate. → φ means the degradation of proteins. μ is the growth rate.