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Carbon-13 and proton nmr studies of helix–coil transition of poly(γ-benzyl-L-glutamate)

✍ Scribed by Yasuyuki Suzuki; Yoshio Inoue; Riichirô Chûjô

Publisher
Wiley (John Wiley & Sons)
Year
1975
Tongue
English
Weight
358 KB
Volume
14
Category
Article
ISSN
0006-3525

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✦ Synopsis

Abstract

The helix–coil conformational transition undergone by poly(γ‐benzyl‐L‐glutamate) in solutions of trifluoroacetic acid and deuterated chloroform was studied by proton and carbon‐13 nmr. The results indicate that in the case of the solvent‐induced helix–coil transition, the side chain assumes a helical conformation before the backbone. In the thermally induced helix–coil transition, the results indicate the existence of an intermediate state, which is between the α‐helix and random coil and is free from intramolecular hydrogen bonding.

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