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A line-broadening free real-time 31P pure shift NMR method for phosphometabolomic analysis
Analyst ( IF 3.6 ) Pub Date : 2021-08-20 , DOI: 10.1039/d1an01198g
Karl Kristjan Kaup 1, 2 , Lauri Toom 2 , Laura Truu 1 , Sten Miller 1 , Marju Puurand 1 , Kersti Tepp 1 , Tuuli Käämbre 1 , Indrek Reile 1
Affiliation  

Phosphometabolomics by 31P NMR can be challenging, since overlapping multiplets of homonuclear coupled phosphorus nuclei complicate spectral analysis. Pure shift NMR allows to simplify such spectra by collapsing multiplets into singlets, but most pure shift methods require substantially elongated measurement times or cause disturbing spectral line broadening. Herein, we combine established pure shift NMR and artefact suppression techniques to record 31P pure shift NMR spectra without penalties in measurement time or line width. Examples are demonstrated in resolution of a mixture of nucleotide triphosphates and a biological sample of 18O labelled ATP isotopomers.

中文翻译:

一种用于磷代谢组学分析的谱线加宽实时 31P 纯位移 NMR 方法

通过31 P NMR 进行的磷代谢组学可能具有挑战性,因为同核耦合磷核的重叠多重峰使光谱分析复杂化。纯位移 NMR 允许通过将多重峰折叠成单峰来简化此类光谱,但大多数纯位移方法需要显着延长测量时间或导致干扰谱线加宽。在此,我们结合已建立的纯位移 NMR 和伪像抑制技术来记录31 P 纯位移 NMR 光谱,而不会影响测量时间或线宽。举例说明了对核苷酸三磷酸混合物和18 O 标记的 ATP 同位素异构体的生物样品的拆分。
更新日期:2021-08-27
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