Fig. 1: Schematic depiction of the Guanine–Cytosine proton transfer reaction.
From: An open quantum systems approach to proton tunnelling in DNA
a Rendering of the canonical standard form taken from the reaction path of Slocombe et al.4 with permission from the Royal Society of Chemistry. b The energetic maximum along the reaction coordinate. c The potentially mutagenic tautomeric (enol-imino) non-standard form of the DNA base. Hydrogen atoms are shown in white, nitrogen in blue, carbon in grey, and oxygen in red.
