Table 1. Steady-state total mass of ergosterol sub-populations in the SL-E model under different experimental conditions, after 60 min.

	ER Erg.	PM Outer Erg.	DIM Erg.	PM Inner Erg.
	X 32	X 36	X 37	X 39
Wild Type (% total sterols)	9,51	4.75	42.80	47.55
1% SPT	1.09	1.20	0.74	1.13
1% SPT (120 min)	1.20	1.28	0.45	1.23
1% IPC synthase	1.05	1.19	0.72	1.11
12.5% Ceramide synthase	1.03	1.04	0.95	1.03

Wild type condition is represented with basal values; the other experimental conditions correspond to fold changes with respect to the wild type after decreasing the specific activity of serine palmitoyl transferase (X ₁₅₇), IPC synthase (X ₁₃₃), and ceramide synthase (X ₁₃₄) to 1% or 12.5%.