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Weitzel, Alexander ; Samol, Claudia ; Oefner, Peter J. ; Gronwald, Wolfram

Robust Metabolite Quantification from J-Compensated 2D 1H-13C-HSQC Experiments

Weitzel, Alexander, Samol, Claudia, Oefner, Peter J. und Gronwald, Wolfram (2020) Robust Metabolite Quantification from J-Compensated 2D 1H-13C-HSQC Experiments. Metabolites 10 (11), S. 449.

Veröffentlichungsdatum dieses Volltextes: 13 Nov 2020 05:50
Artikel
DOI zum Zitieren dieses Dokuments: 10.5283/epub.44164


Zusammenfassung

The spectral resolution of 2D H-1-C-13 heteronuclear single quantum coherence (H-1-C-13-HSQC) nuclear magnetic resonance (NMR) spectra facilitates both metabolite identification and quantification in nuclear magnetic resonance-based metabolomics. However, quantification is complicated by variations in magnetization transfer, which among others originate mainly from scalar coupling differences. ...

The spectral resolution of 2D H-1-C-13 heteronuclear single quantum coherence (H-1-C-13-HSQC) nuclear magnetic resonance (NMR) spectra facilitates both metabolite identification and quantification in nuclear magnetic resonance-based metabolomics. However, quantification is complicated by variations in magnetization transfer, which among others originate mainly from scalar coupling differences. Methods that compensate for variation in scalar coupling include the generation of calibration factors for individual signals or the use of additional pulse sequence schemes such as quantitative HSQC (Q-HSQC) that suppress the J(CH)-dependence by modulating the polarization transfer delays of HSQC or, additionally, employ a pure-shift homodecoupling approach in the 1(H) dimension, such as Quantitative, Perfected and Pure Shifted HSQC (QUIPU-HSQC). To test the quantitative accuracy of these three methods, employing a 600 MHz NMR spectrometer equipped with a helium cooled cryoprobe, a Latin-square design that covered the physiological concentration ranges of 10 metabolites was used. The results show the suitability of all three methods for the quantification of highly abundant metabolites. However, the substantially increased residual water signal observed in QUIPU-HSQC spectra impeded the quantification of low abundant metabolites located near the residual water signal, thus limiting its utility in high-throughput metabolite fingerprinting studies.



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Details

DokumentenartArtikel
Titel eines Journals oder einer ZeitschriftMetabolites
Verlag:MDPI
Ort der Veröffentlichung:BASEL
Band:10
Nummer des Zeitschriftenheftes oder des Kapitels:11
Seitenbereich:S. 449
Datum7 November 2020
InstitutionenMedizin > Institut für Funktionelle Genomik > Lehrstuhl für Funktionelle Genomik (Prof. Oefner)
Physik > Institut für Experimentelle und Angewandte Physik > Lehrstuhl Professor Weiss > Arbeitsgruppe Christoph Strunk
Identifikationsnummer
WertTyp
10.3390/metabo10110449DOI
33171777PubMed-ID
Stichwörter / KeywordsNMR DATA; HSQC; SPECTROSCOPY; H-1; metabolomics; NMR; quantification; HSQC; Q-HSQC; QUIPU-HSQC; water suppression; cryoprobe
Dewey-Dezimal-Klassifikation500 Naturwissenschaften und Mathematik > 530 Physik
600 Technik, Medizin, angewandte Wissenschaften > 610 Medizin
StatusVeröffentlicht
BegutachtetJa, diese Version wurde begutachtet
An der Universität Regensburg entstandenJa
URN der UB Regensburgurn:nbn:de:bvb:355-epub-441645
Dokumenten-ID44164

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