Table 2.

Overview of the most relevant tyrosine derivatives observed in solution, potentially related plasma-derived species [41,81,97], and proposed reactions occurring in the liquid [15,81,99,100,101].

	Added Functional Groups on Tyrosine	Plasma Components in the Gas Phase	Proposed Reactions in Liquid
Ar-only	1 × OH	Ar2*, VUV	H2O → ˙H + ˙OH
Ar + N2	1–2 × OH	Ar2*, VUV	H2O + hv → ˙H + ˙OH
Ar + N2 + O2	1–2 × OH; 1, 4 × NO; 1–2 × NO2	˙NO2(g), ˙O(g)	˙O + H2O → ˙OH + ˙OH ˙NO2 + ˙OH → ONOOH
Ar + O2	1–4 × OH; 1, 4 × NO; 1–2 × NO2; mi×ed	˙NO2(g), ˙O(g), O3(g) N2O5(g)	˙O + H2O → ˙OH + ˙OH ˙NO2 + ˙OH → ONOOH
Ar-only hum	1 × OH; 1, 4 × NO; 1–2 × NO2; mi×ed	˙NO(g), HNO3(g), H2O2 (aq), ˙O2−(aq), ˙OH (aq)	˙NO + ˙O2− → ONOOH HNO2 + H2O2 → ONOOH
Ar + N2 hum	1 × OH; 1, 4 × NO; 1–2 × NO2; mi×ed	˙NO(g), HNO3(g), H2O2 (aq), ˙O2−(aq), ˙OH (aq)	˙NO + ˙O2− → ONOOH HNO2 + H2O2 → ONOOH
Ar + N2 + O2 hum	1 × OH; 1 × NO; 1 × NO2	˙NO2(g), N2O5(g), H2O2 (aq), ˙O2−(aq), ˙OH (aq)	˙NO2 + ˙OH → ONOOH HNO2 + H2O2 → ONOOH
Ar + O2 hum	1 × OH; 1 × NO; 1 × NO2	˙NO2(g), N2O5(g), H2O2 (aq), ˙O2−(aq), ˙OH (aq)	˙NO2 + ˙OH → ONOOH HNO2 + H2O2 → ONOOH