Related Experiment Video
Updated: Jul 3, 2026

Interfacial Molecular-level Structures of Polymers and Biomacromolecules Revealed via Sum Frequency Generation Vibrational Spectroscopy
Published on: August 13, 2019
Analysis of low-frequency phonons in guanosine dihydrate based on molecular dynamics simulations
Shigetaka Yoneda1, Yoko Sugawara, Hisako Urabe
1School of Science, Kitasato University, Kitasato, Sagamihara, Kanagawa 228-8555, Japan. syoneda@kitasato-u.ac.jp
Abstract:
Fourier analysis, using the atomic trajectory calculated by molecular dynamics simulation at 300 K, is applied to the study of low-frequency phonons of guanine dihydrate. The vibrational modes of guanine bases are analyzed, and the optically active modes associated with the guanine moieties are extracted. There are a few significant peaks in the low-frequency region. A possible assignment of the Raman active mode near 27 cm(-1), whose origin would be common to the S-mode of DNA double helices, is discussed.
More Related Videos
08:54Vibrational Spectra of a N719-Chromophore/Titania Interface from Empirical-Potential Molecular-Dynamics Simulation, Solvated by a Room Temperature Ionic Liquid
Published on: January 25, 2020
07:19Structural Studies of Macromolecules in Solution using Small Angle X-Ray Scattering
Published on: November 5, 2018
Related Concept Videos
IR Spectroscopy: Hooke's Law Approximation of Molecular Vibration
According to Hooke's law, the vibrational frequency is directly proportional to the...
¹H NMR of Conformationally Flexible Molecules: Temporal Resolution
GTPases and their Regulation
Large G-proteins, also known...
Globular and Fibrous Proteins
Globular proteins are also known as spheroproteins and typically are approximately round in shape. They contain a mix of amino acid types and contain differing sequences in their primary structures. Globular proteins have many different functions, such as enzymes, cellular messengers, and molecular transporters. These roles often require the proteins to be...
¹H NMR of Conformationally Flexible Molecules: Variable-Temperature NMR