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Conformational study of poly(α‐ L ‐aspartic acid)
Author(s) -
Saudek V.,
Štokrová Š.,
Schmidt P.
Publication year - 1982
Publication title -
biopolymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.556
H-Index - 125
eISSN - 1097-0282
pISSN - 0006-3525
DOI - 10.1002/bip.360210602
Subject(s) - chemistry , aspartic acid , potentiometric titration , precipitation , titration , conformational change , ionization , stereochemistry , amino acid , organic chemistry , biochemistry , ion , physics , meteorology
The conformation of poly(α‐ L ‐aspartic acid) was investigated on a sample in which β‐bonds were not detected. CD and ir spectroscopy showed that poly(α‐ L ‐aspartic acid) passes through a conformational change induced by changes of the degree of ionization that is accompanied by precipitation; the precipitate is probably highly helical. The change was also detected by potentiometric titration.