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Updated: Jun 19, 2026

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接口编辑的固态NMR用于研究细胞接口

Thomas Kress1, Melinda J Duer2

  • 1Yusuf Hamied Department of Chemistry, University of Cambridge, Cambridge, UK.

Communications chemistry
|March 23, 2025
PubMed
概括

研究人员开发了一种新的固态核磁共振 (ssNMR) 方法来分析完整细胞中的细胞糖核. 这种技术为生物医学应用提供了对细胞膜接口的分子洞察力.

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Chemical Shift: Internal References and Solvent Effects01:17

Chemical Shift: Internal References and Solvent Effects

In an NMR sample, precise measurement of the absolute absorption frequencies of nuclei is difficult. A standard internal reference compound is added, and the frequency difference between the reference signal and sample signals is measured.
The internal reference compound generally used in NMR spectroscopy is tetramethylsilane (TMS). TMS is preferred because it is chemically inert, soluble in NMR solvents, and easily removable. Also, the highly shielded methyl protons in TMS yield an intense...