A

Substrates

Formula

f->a

a->b

b->c<=>d

c<=>d

d->e

e->f

NSolve[&&&&&&&&

&& &&

a>0 && b>0 && c>0 && d>0 && e>0 && f>0 &&,

{a,b,c,d,e,f}]

B

The rate of synthesis of (c) from (b) by E2 ($1) equals that of its transformation between (c) and (d) (synthesis and/or degradation by E3N) ($2)); from the equality $1=$2, the equation for (d) is deduced, as shown in panel (A).

C

The rate of transformation between (c) and (d) (synthesis and/or degradation by E3N) ($2) equals that ofits degradation of (d), by E4 ($3); from the equality $2=$3, the equation for (c) is deduced, as shown in panel (A).

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