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Solvent dependence of the helix–coil transition of poly‐γ‐benzyl‐ L ‐glutamate. A PMR study
Author(s) -
Ferrara Luciano,
Temussi Piero A.
Publication year - 1973
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.1973.360120702
Subject(s) - chemistry , helix (gastropod) , solvent , proton magnetic resonance , solvent effects , electromagnetic coil , proton , crystallography , nuclear magnetic resonance , organic chemistry , ecology , physics , quantum mechanics , snail , electrical engineering , biology , engineering
The coil to helix conformational transitions undergone by poly‐γ‐benzyl‐ L ‐glutamate in solutions of haloacetic acids and various cosolvents were studied by means of proton magnetic resonance. The results indicate a very small solvent dependence of the α‐CH Helix–coil chemical shift difference. The helical stabilities of PBLG in different solvent mixtures were interpreted in terms of modifications of the “solvent structure.”