- ELSEVIER SCIENCE BV
The thermal transition of (Pro-Pro-Gly)(10) in D2O solution has been studied by NMR. The H-1 and C-13 spectra measured at different temperatures are assigned using home-and heteronuclear two-dimensional NMR methods. It is confirmed that the triple helix undergoes a preliminary transition between two distinct states; the higher state is considered to be a preparatory state for the transition to the statistical coil. The observed change in the helix content is explained in terms of an extended first-order phase transition. (C) 1997 Elsevier Science B.V.
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