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Conformational study of phosphoserine in aqueous solution. I— 13 C n.m.r. results
Author(s) -
Pogliani L.,
Ziessow D.,
Krüger Ch.
Publication year - 1977
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/mrc.1270090903
Subject(s) - conformational isomerism , phosphoserine , aqueous solution , chemistry , coupling constant , titration , chemical shift , population , crystallography , stereochemistry , molecule , inorganic chemistry , serine , organic chemistry , physics , demography , particle physics , sociology , enzyme
13 C chemical shifts and coupling constants of phosphoserine in aqueous solutions were studied as a function of pH values. Carboxyl and α‐amino titration shifts agree with those observed in amino acids. The analysis of the coupling constants indicates that for rotation about the (C)CO(P) axis the trans conformer predominates for all pH values. The fractional population of the gauche conformer reaches a maximum at pH=8.