ArticleAnalytical science advances2024
A Raman spectral marker for the iso-octyl chain structure of cholesterol.
Article in Analytical science advances, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
What it found
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Who cites it
3 citing papers in PubMed.
- Fourier Transform Infrared Imaging Supported by Raman Spectroscopy Reveals Biochemical Changes in Adult Rat Brains Following Prenatal Exposure to a Ketogenic Diet.ACS chemical neuroscience · 2026Article
- Noninvasive Optical Sensing of Aging and Diet Preferences Using Raman Spectroscopy.Analytical chemistry · 2025Article
- A Raman spectral marker for the iso-octyl chain structure of cholesterol.Analytical science advances · 2024Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Raman spectroscopy provides label-free, specific analysis of biomolecular structure and interactions. It could have a greater impact with improved characterization of complex fingerprint vibrations. Many Raman peaks have been assigned to cholesterol, for example, but the molecular vibrations associated with those peaks are not known. In this report, time-dependent density functional theory calculations of the Raman spectrum of cholesterol are compared to measurements on microcrystalline powder to identify 23 peaks in the Raman spectrum. Among them, a band of six peaks is found to be sensitive to the conformational structure of cholesterol's iso-octyl chain. Calculations on 10 conformers in this spectral band are fit to experimental spectra to probe the cholesterol chain structure in purified powder and in phospholipid vesicles. In vesicles, the chain is found to bend perpendicular to the steroid rings, supporting the case that the chain is a dynamic structure that contributes to lipid condensation and other effects of cholesterol in biomembranes.
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Registered trials
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