Related Experiment Video
Updated: Jun 24, 2026

14:55
Atomic Scale Structural Studies of Macromolecular Assemblies by Solid-state Nuclear Magnetic Resonance Spectroscopy
Published on: September 17, 2017
Raman tensors and their application in structural studies of biological systems
Masamichi Tsuboi1, James M Benevides, George J Thomas
1University of Tokyo, Tokyo, Japan. tsuboima@iwakimu.ac.jp
Summary
This study reviews Raman tensors for 39 vibrational bands in biological molecules. These tensors aid in understanding the structure of proteins, nucleic acids, and other biomaterials.
Area of Science:
- Molecular Spectroscopy
- Biophysics
- Structural Biology
Background:
- Raman scattering arises from molecular electron-light interactions, described by a Raman tensor.
- Each Raman-active molecular vibrational mode has a unique Raman tensor.
- Raman tensors have been determined for numerous vibrational bands of biological macromolecules like proteins and nucleic acids.
Purpose of the Study:
- To review Raman tensors for 39 representative vibrational Raman bands of biological molecules.
- To detail the methods used for determining these Raman tensors.
- To discuss the application of Raman tensors in structural studies of various biological systems.
Main Methods:
- Determination of Raman tensors for specific vibrational modes.
- Analysis of Raman scattering data from biological samples.
- Application of tensor data in structural elucidation.
Main Results:
- Compilation and review of Raman tensors for 39 key vibrational bands in biomolecules.
- Detailed methodologies for Raman tensor determination are presented.
- Demonstrated utility of Raman tensors in structural investigations.
Conclusions:
- Raman tensors provide valuable insights into the structure of biological macromolecules.
- The reviewed Raman tensors are applicable to diverse biological structures, including viruses, feathers, and protist eyespots.
- This work highlights the importance of Raman tensor analysis in structural biology.
Related Concept Videos
Raman Spectroscopy: Overview
The underlying principle of Raman spectroscopy is based on the interaction between light and matter, specifically molecules' inelastic scattering of photons. When a monochromatic beam of light, typically from a laser source, interacts with a sample, most scattered light has the same frequency as the incident light. This is known as Rayleigh scattering.
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and the...
However, a small fraction of the scattered light exhibits a frequency shift due to the exchange of energy between the incident photons and the...
Applications Of NMR In Biology
Nuclear magnetic resonance (NMR) spectroscopy is a very valuable analytical technique for researchers. It has been used for more than 50 years as an analytical tool. F. Bloch and E. Purcell formulated NMR in 1946 and won the 1952 Nobel Prize in Physics for their work. Biological macromolecules such as proteins, nucleic acids, lipids, and organic molecules including pharmaceutical compounds, can be studied using this versatile tool that exploits the magnetic properties of certain nuclei.
The...
The...
Proteomics
A proteome is the entire set of proteins that a cell type produces. We can study proteomes using the knowledge of genomes because genes code for mRNAs, and the mRNAs encode proteins. Although mRNA analysis is a step in the right direction, not all mRNAs are translated into proteins.
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term proteomics...
Proteomics is the study of proteomes' function. It involves the large-scale systematic study of the proteome to denote the protein complement expressed by a genome. Scientist Mark Wilkins coined the term proteomics...
Raman Spectroscopy Instrumentation: Overview
A conventional Raman spectrophotometer includes a laser source, a sample holding system, a wavelength selector, and a detector.
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
The monochromatic laser source, typically using visible or near-infrared radiation, generates a highly focused beam of light. This light interacts with the molecules of the sample, scattering some of the light. Liquid and gaseous samples are usually tested in ordinary glass capillaries, while solids can be analyzed as powders packed in capillaries or as potassium...
Globular and Fibrous Proteins
Many proteins can be classified into two distinct subtypes - globular or fibrous. These two types differ in their shapes and solubilities.
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...
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...
X-ray Diffraction of Biological Samples
X-ray diffraction or XRD is an analytical tool that utilizes X-rays to study ordered structures such as crystalline organic and inorganic samples, polycrystalline materials, proteins, carbohydrates, and drugs.
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...
According to Bragg's law, when X-rays strike the sample positioned on a stage, the rays are scattered by the electron clouds around the sample atoms. The X-ray diffraction or scattering is caused by constructive interference of the X-ray waves that reflect off the internal crystal...

