A quantum mechanical analysis of the motion of two hydrogenic species
(hydrogen atoms or protons) inside a planar array of other atoms uses
model potentials to explore the effect of delocalization and exchange
on the hydrogen bonds in DNA. The assembly of base pairs in DNA may al
low further delocalization of hydrogen along the chain to form conduct
ion bands. Possible hydrogen exchange within base pairs together with
migration along the chain axis suggests that some of the stability of
DNA arises through hydrogen conduction to repair bonding defects.