The potential energy surface for formation of 2-amino-5-hydroxy-7, 9-dihydropurine-6, 8-
dione (5-OH-OG), guanidinohydantoin (Gh) and spiroiminodihydantoin (Sp) from 8 …

The potential energy surface for the transformation of 8-hydroxy guanine radical to
formamidopyrimidine adducts via four pathways has been mapped out using B3LYP density …

8-Oxo-7, 8-dihydroguanine (OG) is the most common base damage found in cells, where it
resides in many structural contexts, including the nucleotide pool, single-stranded DNA at …

Experimentally, it was observed that the oxidized guanine lesion spiroiminodihydantoin (Sp)
contained in highly purified oligodeoxynucleotides slowly converts to guanidinohydantoin …

The photosensitized oxidation of 2 ', 3 ', 5 '-tris-(O-tert-butyldimethylsilyl)-8-oxo-7, 8-
dihydroguanosine (8-oxoG) with singlet oxygen was studied by low-temperature NMR. A …

An efficient computational method has been identified that uses B3LYP density functional
theory, IEF-PCM solvation modeling with a modified UFF cavity, and Boltzmann weighting of …

Reduction potentials and p K a values were calculated for intermediates and products along
three major pathways for guanine oxidation using the B3LYP and CBS-QB3 levels of theory …

As an end metabolism product of the widely used thiopurine drugs, 6-thioguanine (6-TG)
absorbs UVA and produces 1O2 by photosensitization. This unusual photochemical …

Reactive oxygen species present in the cell generate DNA damage. One of the major
oxidation products of guanine in DNA, 8-oxo-7, 8-dihydroguanine, formed by loss of two …

One-electron oxidation of 7, 8-dihydro-8-oxo-2′-deoxyguanosine (8-oxodG) yielded a
guanidinohydantoin derivative (dGh) and a spiroiminodihydantoin derivative (dSp), both …