A quantitative study of organic phosphate-amine interaction by 31P nuclear magnetic resonance |
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Authors: | R Katz H J Yeh D F Johnson |
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Affiliation: | Section on Microanalytical Services and Instrumentation Laboratory of Chemistry, NIAMDD, NIH, Bethesda, Md. 20014 USA |
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Abstract: | Interactions between the phosphate group of 4-deoxypyridoxine 5′-phosphate and different protonated amines were quantitatively measured by means of {31P}-1H nuclear magnetic double resonance technique combined with pD titration. An interaction of the phosphate group with added amine resulted in a measurable difference in the 31P chemical shift of these phosphate-containing samples with and without amine [Δδ(31P)]. Basic amino acids and biogenic amines had significant measurable Δδ(31P) values. No interactions were observed for acidic or neutral α, β and γ-amino acids. |
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Keywords: | To whom correspondence should be addressed. |
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