Structural changes in poly(D-alanine).
Investigations are reported on the possibility of the direct transformations from alpha-helices to beta-sheets in poly(D-alanine) by heating and the immersion into formic acid, and were concluded that intrahelical hydrogen bonds in the alpha-helix were stable, while interhelical interactions in the alpha-helix crystal were weakened, and beta-sheets did not transform directly from alpha-helices, but grew from random coils.
Nagura
M
M
Faculty of Textile Science and Technology, Shinshu University, Ueda, Japan.
D002152:Calorimetry, Differential Scanning; D008968:Molecular Conformation; D010455:Peptides / Q000737:chemistry*; D013055:Spectrophotometry, Infrared; D014961:X-Ray Diffraction
D010455:Peptides; C019529:polyalanine