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15 N NMR studies of amino acids and their reaction products with formaldehyde
Author(s) -
Naulet N.,
Tomé D.,
Martin G. J.
Publication year - 1983
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/omr.1270210909
Subject(s) - formaldehyde , chemical shift , chemistry , nitrogen , nuclear magnetic resonance spectroscopy , amino acid , lysine , chemical reaction , carbon 13 nmr , organic chemistry , biochemistry
Natural abundance 15 N NMR spectroscopy has been used to investigate the effect of pH on the 15 N chemical shifts of lysine and of ε‐hydroxymethyllysine. A computer calcualtion which fits the chemical shifts of both α‐and ε‐nitrogen atoms versus pH has been used to predict the p K a values. 15 N chemical shifts and some 1 J ( 15 NH) values of some other amino acids and of their reaction products with formaldehyde are also reported.