TABLE VI.

Bimolecular rate constants in the radiolysis of cysteine.^a

	Rate constant
Reaction	(L mol−1 s−1)68
$e_{aq}^{-}$ + O2 →O2•−	1.9 × 1010
$e_{aq}^{-}$ + H+ → H•	2 × 1010
$e_{aq}^{-}$ + HO• → HO−	3 × 1010
H• + HO• → H2O	7.0 × 109
H• + O2 → HO2•	2.1 × 1010
H• + HO2• → H2O2	2 × 1010
$e_{aq}^{-}$ + Cys-SH → HS− + Ala•b	1.2 × 1010
H• + Cys-SH → H2 + Cys-S•	1.8 × 109
H• + Cys-SH → H2S + Ala•	1.0 × 109
HO• + HO2• → H2O + O2	6 × 109
HO• + O2•− → HO− + O2	8 × 109
HO• + Cys–SH → H2O + Cys–S•	3.4 × 1010
H• + glycerol → H2 + glyceryl•	2.9 × 107
HO• + glycerol → H2O + glyceryl•	1.9 × 109
RS•+ RS•→ RSSR109	2 × 109

^a[Cys–SH]₀ = 50 mM, radiolytic steady state [HO^•] = 0.83 µM, [H^•] = 0.095 µM, [$e_{aq}^{-}$] = 0.74 µM. Aerobic solution [O₂]₀ = 284 µM, 40% v/v glycerol ≈5.5M.

^bReaction with $e_{aq}^{-}$ apparently does not produce Cys–S^•.