Abstract
Systematic 8 ns ab initio molecular dynamics (AIMD) were performed to study the structure and dynamics of water in bulk and close to hydrophobic (CH3) and hydrophilic (carbonyl) groups of tetramethylurea (TMU). Dynamical behaviour showed two crossovers: The first around the hydrophobic group at , and the second at related to the relative strengths of water-water and water-carbonyl hydrogen bonds (HBs). For bulk water, relaxation times appear to diverge at , rendering support to the liquid-liquid critical point hypothesis. To identify the effects due to the hydrophilic carbonyl group, systems of water with one methane molecule were used as references. Our findings are related to the structural and thermodynamic transitions reported for proteins in solution and may play a role in cold denaturation.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
