How the Chalcogen Atom Size Dictates the Hydrogen‐Bond Donor Capability of Carboxamides, Thioamides, and Selenoamides

C Nieuwland, C Fonseca Guerra - Chemistry–A European …, 2022 - Wiley Online Library
The amino groups of thio‐and selenoamides can act as stronger hydrogen‐bond donors
than of carboxamides, despite the lower electronegativity of S and Se. This phenomenon …

Understanding chemistry with the symmetry‐decomposed Voronoi deformation density charge analysis

C Nieuwland, P Vermeeren… - Journal of …, 2023 - Wiley Online Library
The symmetry‐decomposed Voronoi deformation density (VDD) charge analysis is an
insightful and robust computational tool to aid the understanding of chemical bonding …

Structural Insights into the Antiparallel G-Quadruplex in the Presence of K+ and Mg2+ Ions

SD Bali, M Ahsan… - The Journal of Physical …, 2023 - ACS Publications
G-Quadruplex (GQ) is a secondary structural unit of DNA, formed at the telomere region of
the chromosome with a high guanine content. It is reported that the GQs can hinder many …

Chalcogen Atom Size Dictates Stability of Benzene‐1, 3, 5‐triamide Polymers: Overlooked Role of Geometrical Fit for Enhanced Hydrogen Bonding

C Nieuwland, S Lekanne Deprez… - … A European Journal, 2023 - Wiley Online Library
Our quantum chemical analyses elucidated how the replacement of O in the amide bonds of
benzene‐1, 3‐5‐tricarboxamides (OBTAs) with the larger chalcogens S and Se enhances …

B‐DNA Structure and stability: The role of nucleotide composition and order

C Nieuwland, TA Hamlin, C Fonseca Guerra… - …, 2022 - Wiley Online Library
We have quantum chemically analyzed the influence of nucleotide composition and
sequence (that is, order) on the stability of double‐stranded B‐DNA triplets in aqueous …

Semi-empirical and linear-scaling DFT methods to characterize duplex DNA and G-quadruplexes in the presence of interacting small molecules

IO de Luzuriaga, S Elleuchi, K Jarraya… - Physical Chemistry …, 2022 - pubs.rsc.org
The computational study of DNA and its interaction with ligands is a highly relevant area of
research, with significant consequences for developing new therapeutic strategies …

Understanding the influence of alkali cations and halogen anions on the cooperativity of cyclic hydrogen‐bonded rosettes in supramolecular stacks

AN Petelski, C Fonseca Guerra - Chemistry–An Asian Journal, 2022 - Wiley Online Library
Hydrogen‐bonded supramolecular systems are known to obtain extra stabilization from the
complexation with ions, like guanine quadruplex (GQ). They experience strong hydrogen …

Ion-Dependent Conformational Plasticity of Telomeric G-Hairpins and G-Quadruplexes

AM Salsbury, HM Michel, JA Lemkul - ACS omega, 2022 - ACS Publications
Telomeric DNA is guanine-rich and can adopt structures such as G-quadruplexes (GQs) and
G-hairpins. Telomeric GQs influence genome stability and telomerase activity, making …

Solid-state structures of some fluorescent macrocyclic complexes of alkali metal ions studied by single-crystal X-ray diffraction studies, vibrational spectroscopy and …

N Ghildiyal - Journal of Inclusion Phenomena and Macrocyclic …, 2024 - Springer
The aim of this review is to compile important results of single-crystal X-ray diffraction
method, vibrational and NMR studies conducted on alkali metal ion complexes of some …

Forever young: Structural stability of telomeric guanine quadruplexes in the presence of oxidative DNA lesions

T Miclot, C Corbier, A Terenzi, C Hognon… - … A European Journal, 2021 - Wiley Online Library
Human telomeric DNA, in G‐quadruplex (G4) conformation, is characterized by a
remarkable structural stability that confers it the capacity to resist to oxidative stress …