Updating atomic charge parameters of aliphatic amino acids: a quest to improve the performance of molecular modeling via sequential molecular dynamics and DFT …

G Colherinhas - Physical Chemistry Chemical Physics, 2021 - pubs.rsc.org
In this work, we observe the behavior of the dipole moment, atomic charges, solute–solvent
interactions and NMR spectroscopy of aliphatic amino acids in a water solution via the …

Update of CHARMM36's atomic charges for aromatic amino acids in water solution simulations and spectroscopy analysis via sequential molecular dynamics and DFT …

G Colherinhas - Journal of Molecular Liquids, 2021 - Elsevier
In this theoretical work we develop simulations of classical molecular dynamics sequentially
combined with quantum calculations to obtain an update of the atomic charges of the …

Hydroxylic, sulfur-containing and amidic amino acids in water solution: Atomic charges parameters for computational modeling using molecular dynamics simulation …

LBA Oliveira, WB Cardoso, G Colherinhas - Journal of Molecular Liquids, 2021 - Elsevier
In the present paper, we investigated the polarization effects on different amino acids (AAs)
structures, ie, Serine, Threonine, Cysteine, Methionine, Asparagine, and Glutamine. Initially …

Molecular dynamics study of hydrogen bond in peptide membrane at 150–300 K

ED Alves, DX de Andrade, AR de Almeida… - Journal of Molecular …, 2022 - Elsevier
In this work, we develop molecular dynamics simulations to investigate the structural and
dynamic behavior of hydrogen bonds in A 6 X-type peptide structures (X= D, K, and R) in the …

Statistical and energetic analysis of hydrogen bonds in short and long peptide nanotapes/nanofibers using molecular dynamics simulations

AR de Almeida, DX de Andrade… - Journal of Molecular …, 2022 - Elsevier
In this work, we performed fully atomistic classical molecular dynamics simulations to
characterize the structural and energetic interaction of peptide nanoribbons/nanofibers with …

Influence of Ion specificity and concentration on the conformational transition of intrinsically disordered sheep prion peptide

O Singh, B Kumar Das, D Chakraborty - ChemPhysChem, 2022 - Wiley Online Library
The structural sensitivity of the intrinsically disordered proteins with the ions has been
observed experimentally; however, it is still unclear how the presence of different metal ions …

Fullerene C60 spectroscopy in [BMIM][PF6] ionic liquid: Molecular dynamics study using polarization effects

WB Cardoso, G Colherinhas - Journal of Molecular Structure, 2022 - Elsevier
We employ molecular dynamics (MD) simulations to assess the electrical behavior of the
atomic charges of a fullerene immersed in an ionic liquid (and water). From solute-solvent …

Preferential binding affinity of ions and their effect on structure and dynamics of water near antimicrobial peptide

O Singh, D Chakraborty - Journal of Molecular Liquids, 2021 - Elsevier
Water containing dissolved salts is often found to play important roles in many chemical and
biological processes. They affect the stability of the amino acids and proteins by altering the …

Conformational dynamics of glucagon-like peptide-2 with different electric field

J Su, T Sun, Y Wang, Y Shen - Polymers, 2022 - mdpi.com
Molecular dynamics (MD) simulation was used to study the influence of electric field on
Glucagon-like Peptide-2 (GLP-2). Different electric field strengths (0 V/nm≤ E≤ 1 V/nm) …

Dynamic interactions of negatively charged gold nanoparticles (AuNPs) in aqueous environments with different ionic compositions

E Coelho, D Xavier, A Almeida… - Journal of Molecular …, 2024 - Elsevier
This study provides a comprehensive analysis of the interactions between negatively
charged gold nanoparticles (Au) 144 (SRCOO 1−) 60 and both divalent (Mg 2+, Ca 2+) and …