When oligonucleotides are oxidized by carbonate radical, thymine and carbonate can add to
guanine radical, yielding either a guanine-thymine cross-link product (G∧ T) or 8-oxo-7, 8 …

Methylated guanine damage at O6 position (ie O6MG) is dangerous due to its mutagenic
and carcinogenic character that often gives rise to G: C–A: T mutation. However, the reason …

As the hydroxyl (OH) and perhydroxyl (OOH) radicals are known to play important roles in
biological systems, their reactions with cytosine and thymine were studied. Addition …

The photoisomerization of urocanic acid (UCA)—which is present in human skin epidermis,
where it acts as a sunscreen—from its trans isomer to its cis isomer upon exposure to UV-B …

Fenton reactions unavoidably take place in the human body and have been demonstrated to
cause oxidative DNA damage. However, the molecular-level understanding of DNA damage …

Multiconfigurational ab initio methods are used in this study to examine two initial reactions
that take place during the OH radical attack of the DNA base guanine: a ring opening …

diamino‐4‐oxo‐5‐formamidopyrimidine (FapyG) is an oxidatively damaged product of
guanine (G), which is mainly formed through metabolic processes that produce OH radicals …

The addition reaction mechanism of OH radical with guanine‐cytosine (GC) base pair has
been explored at the B3LYP/DZP++ level of density functional theory (DFT). Structures …

Purpose To report on a case of recurrence of paraproteinemic keratopathy (PPK) associated
with monoclonal gammopathy after bilateral penetrating keratoplasty. Observations …

Mechanisms of reactions of four different tautomers (G (-H1)·, G (-H2a)·, G (-H2b)· and G (-
H9)·) of guanyl radical with carbonate radical anion (CO3.−) producing the mutagenic …