Table T1.

Rate constants of reactions mentioned in the manuscript are as follows:

Reaction No.	Reaction	Rate constant	Reference
1	$2\text{NO}+{\text{O}}_2\stackrel{{\text{k}}_1}{\to }2{\text{NO}}_2$	k1 = 2.9×106 M−2s−1	[44, 58]
2	$\text{NO}+{\text{NO}}_2\underset{{\text{k}}_{-2}}{\overset{{\text{k}}_2}{\rightleftharpoons }}{\text{N}}_2{\text{O}}_3$	k2 = 1.1×109 M−1s−1 k−2 = 8.1×104 s−1	[18] [18]
3	${\text{N}}_2{\text{O}}_3+\text{GSH}\stackrel{{\text{k}}_3}{\to }\text{GSNO}+{\text{NO}}_2^{-}+{\text{H}}^{+}$	k3= 6.6×107 M−1s−1	[33]
4	${\text{N}}_2{\text{O}}_3+{\text{H}}_2\text{O}\stackrel{{\text{k}}_4}{\to }2{\text{NO}}_2^{-}+2{\text{H}}^{+}$	k4= 3.8×104 s−1	[18]
5	${}^{·}\text{N}{\text{O}}_2+\text{GSH}\stackrel{{{\text{k}}_5}^{\prime }}{\to }{\text{NO}}_2^{-}+{\text{GS}}^{·}+{\text{H}}^{+}$ ${}^{·}\text{N}{\text{O}}_2+{\text{GS}}^{-}\stackrel{{{\text{k}}_5}^{″}}{\to }{\text{NO}}_2^{-}+{\text{GS}}^{·}$	k5= 1.15×107 M−1s−1 $\left({\text{k}}_5={{\text{k}}_5}^{\prime }+{{\text{k}}_5}^{″}\frac{[{\text{GS}}^{-}]}{[\text{GSH}]}\right)$	Estimated See also [31]
6	${\text{GS}}^{·}+{}^{·}\text{N}\text{O}\stackrel{{\text{k}}_6}{\to }\text{GSNO}$	k6= 3×109 M−1s−1	[66]
7	$\text{GSH}\underset{{\text{k}}_{-7}}{\overset{{\text{k}}_7}{\rightleftharpoons }}{\text{GS}}^{-}+{\text{H}}^{+}$	k7= 63 s−1 k−7= 0.1×1010 M−1s−1	[46] [46]*
8	${\text{GS}}^{·}+{\text{GS}}^{-}\underset{{\text{k}}_{-8}}{\overset{{\text{k}}_8}{\rightleftharpoons }}{\text{GSSG}}^{-}$	k8= 9.6×106 M−1s−1 k−8 = 1.6×105 s−1	[26] [47]
9	${\text{GSSG}}^{-}+{\text{O}}_2\stackrel{{\text{k}}_9}{\to }\text{GSSG}+{\text{O}}_2^{·-}$	k9= 5×109 M−1s−1	[47]
10	${\text{GS}}^{·}+\text{GSNO}\stackrel{{\text{k}}_{10}}{\to }\text{GSSG}+{}^{·}\text{N}\text{O}$	k10= 1.7×109M−1s−1	[50]

^*pH = 7.4