| Literature DB >> 21611840 |
Nenad Juranić1, Emirhan Nemutlu, Song Zhang, Petras Dzeja, Andre Terzic, Slobodan Macura.
Abstract
Intramolecular correlations among the (18)O-labels of metabolic oligophosphates, mapped by J-decoupled (31)P NMR 2D chemical shift correlation spectroscopy, impart stringent constraints to the (18)O-isotope distributions over the whole oligophosphate moiety. The multiple deduced correlations of isotopic labels enable determination of site-specific fractional isotope enrichments and unravel the isotopologue statistics. This approach ensures accurate determination of (18)O-labeling rates of phosphometabolites, critical in biochemical energy conversion and metabolic flux transmission. The biological usefulness of the J-decoupled (31)P NMR 2D chemical shift correlation maps was validated on adenosine tri-phosphate fractionally (18)O labeled in perfused mammalian hearts.Entities:
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Year: 2011 PMID: 21611840 PMCID: PMC3230932 DOI: 10.1007/s10858-011-9515-3
Source DB: PubMed Journal: J Biomol NMR ISSN: 0925-2738 Impact factor: 2.835