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Enthalpy of helix–coil transitions from heats of solution. II. Poly‐ε‐carbobenzoxy‐ L ‐lysine and copolymers with L ‐phenylalanine
Author(s) -
Giacometti Giovanni,
Turolla Angklo,
Boni Renzo
Publication year - 1970
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.1970.360090810
Subject(s) - chemistry , enthalpy , copolymer , helix (gastropod) , lysine , phenylalanine , solvent , polymer chemistry , crystallography , thermodynamics , organic chemistry , polymer , amino acid , biochemistry , ecology , physics , biology , snail
The heal of solution of Poly‐ε‐carbobenzoxy‐ L ‐lysine and of a series of its copolymers with phenylalanine was measured as a function of solvent composition. The enthalpy change of the helix‐to‐coil transition was estimated for the various cases. The previous findings that side chains do not greatly affect the transition enthalpy is confirmed also in cases having much larger differences in helix stability.