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Title: 13C Isotopomer Analysis of Glutamate by J-Resolved Heteronuclear Single Quantum Coherence Spectroscopy
Authors: Burgess, Shawn C. 
Carvalho, Rui A. 
Merritt, Matthew E. 
Jones, John G. 
Malloy, Craig R. 
Sherry, A. Dean 
Keywords: indirect detection; 1H NMR; 13C isotopomer analysis; 2D NMR; HSQC
Issue Date: 2001
Citation: Analytical Biochemistry. 289:2 (2001) 187-195
Abstract: 13C NMR isotopomer analysis is a powerful method for measuring metabolic fluxes through pathways intersecting in the tricarboxylic acid cycle. However, the inherent insensitivity of 13C NMR spectroscopy makes application of isotopomer analysis to small tissue samples (mouse tissue, human biopsies, or cells grown in tissue culture) problematic. 1H NMR is intrinsically more sensitive than 13C NMR and can potentially supply the same information via indirect detection of 13C providing that isotopomer information can be preserved. We report here the use of J-resolved HSQC (J-HSQC) for 13C isotopomer analysis of tissue samples. We show that J-HSQC reports isotopomer multiplet patterns identical to those reported by direct 13C detection but with improved sensitivity.
Rights: openAccess
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais

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