Figure 5. Microtubule concentrations of different lengths during cell growth.

At the initial time, simulations involved 50 discretized microtubule subunits (N = 50) whereas at t = 100 min, 100 such subunits were involved. At all times, the longest microtubule in the cell had the highest concentration. The rate of subunit incorporation was not linear with time due to the exponential growth rate. The initial concentrations of T_T, T_D, and GTP were 7.5 µM, 0.5 µM, and 340 µM respectively.