The role of proton transfer on mutations

R Srivastava - Frontiers in Chemistry, 2019 - frontiersin.org
Hydrogen bonds play a critical role in nucleobase studies as they encode genes, map
protein structures, provide stability to the base pairs, and are involved in spontaneous and …

Physico-chemical profiles of the wobble↔ Watson-Crick G*· 2AP (w)↔ G· 2AP (WC) and A· 2AP (w)↔ A*· 2AP (WC) tautomerisations: a QM/QTAIM comprehensive …

O Brovarets, I Voiteshenko, D Hovorun - 2018 - ir.librarynmu.com
This study is intended to clarify in detail the tautomeric transformations of the wobble (w) G*
2AP (w) and A2AP (w) nucleobase mispairs involving 2-aminopurine (2AP) into the Watson …

Non-dissociative structural transitions of the Watson-Crick and reverse Watson-Crick А· Т DNA base pairs into the Hoogsteen and reverse Hoogsteen forms

OO Brovarets', KS Tsiupa, DM Hovorun - Scientific Reports, 2018 - nature.com
In this study it was theoretically shown that discovered by us recently (Brovarets' et al.,
Frontiers in Chemistry, 2018, 6: 8; doi: 10.3389/fchem. 2018.00008) high-energetical …

Estimating strengths of individual hydrogen bonds in RNA base pairs: toward a consensus between different computational approaches

A Halder, D Data, PP Seelam, D Bhattacharyya… - ACS …, 2019 - ACS Publications
Noncoding RNA molecules are composed of a large variety of noncanonical base pairs that
shape up their functionally competent folded structures. Each base pair is composed of at …

A ratiometric fluorescent pH probe based on keto–enol tautomerization for imaging of living cells in extreme acidity

ZX Tong, W Liu, H Huang, HZ Chen, XJ Liu, YQ Kuang… - Analyst, 2017 - pubs.rsc.org
6-(Diethylamino)-2, 3-dihydro-1H-xanthene-4-carbaldehyde (DDXC), a reported synthetic
intermediate for near-infrared fluorescent dyes, was developed into a fluorescent pH probe …

A QM/QTAIM research under the magnifying glass of the DPT tautomerisation of the wobble mispairs involving 2-aminopurine

OB Ol'ha, IS Voiteshenko, H Pérez-Sánchez… - New Journal of …, 2017 - pubs.rsc.org
In this study, we investigated the changes of the energetic, electron-topological, geometric,
polar and charge parameters for the biologically important T· 2AP*(w)↔ T*· 2AP (w) and G …

Renaissance of the tautomeric hypothesis of the spontaneous point mutations in DNA: new ideas and computational approaches

OB Ol'ha, DM Hovorun - Mitochondrial DNA: New Insights, 2018 - books.google.com
In this chapter, we formulate basic physico-chemical principles that define the
microstructural nature of the origin of the spontaneous incorporation and replication point …

How do hydrophobic nucleobases differ from natural DNA nucleobases? Comparison of structural features and duplex properties from QM calculations and MD …

I Negi, P Kathuria, P Sharma… - Physical Chemistry …, 2017 - pubs.rsc.org
Computational (DFT and MD simulation) methods are employed to systematically
characterize the structural and energetic properties of five hydrophobic nucleobases (FEMO …

Structural grounds for the 2-aminopurine mutagenicity: A novel insight into the old problem of the replication errors

OB Ol'ha, H Pérez-Sánchez, DM Hovorun - RSC advances, 2016 - pubs.rsc.org
Within the framework of the classical Watson–Crick tautomeric hypothesis it has been
reliably established by quantum-chemical calculations that amino–imino tautomerization of …

Unexpected A· T (WC)↔ A· T (rWC)/A· T (rH) and A· T (H)↔ A· T (rH)/A· T (rWC) conformational transitions between the classical A· T DNA base pairs: A QM/QTAIM …

OO Brovarets', KS Tsiupa… - International Journal of …, 2018 - Wiley Online Library
In this study, using QM/QTAIM calculations in the continuum with ε= 1 under normal
conditions, we have revealed for the first time the nondissociative A· T (WC)↔ A· T (rWC)/A …